Navigation

Researchers at UCD

researcher

John O'Doherty

Full Professor

School Of Agriculture & Food Science
Agriculture and Food Science
Belfield
Dublin 4

Tel: +353 1 7167128
Email: john.vodoherty@ucd.ie

Biography

1982-1987 : B.AgrSc - University College Dublin - Agricultural Science

1987-1989 : M.AgrSc - University College Dublin - Animal Science

1991-1994 : PhD - University College Dublin - Animal Nutrition
 
2014 : DSc 
 

1994-1997 : Assistant Lecturer - Dep of Animal Science and Production, UCD

1997- 2002 : College lecturer - Dep of Animal Science and Production, UCD

2002 - 2006 : Senior Lecturer - Dep of Animal Science and Production, UCD

2006-2014 : Associate Professor of Animal Nutrition -School of Agric, Food Science and Veterinary Medicine, UCD

2014 - Present :  Professor of Animal Nutrition -School of Agric and Food Science, UCD




Publications

 

Book Chapters

O' Doherty, J., Pierce, K.M. and Kenny, D.A.; (2006) 'Fermentable fibre and gut health in non- and pre-ruminants' In: O' Doherty, J., Pierce, K.M. and Kenny, D.A.; (eds). Recent Advances in Animal Nutrition. Nottingham: Nottingham University Press. [Details]
 

Peer Reviewed Journals

O'Doherty, J.V. and Crosby, T.F.; (1990) 'The effect of progestagen type, PMSG dosage and time of ram introduction on reproductive performance in ewe lambs'. Theriogenology, 33 :1279-1286. [Details]
O'Doherty, J.V. and Crosby, T.F.; (1996) 'The effect of diet in late pregnancy on progesterone concentration and colostrum yield in ewes'. Theriogenology, 46 :233-241. [Details]
O'Doherty, J.V. and Crosby, T.F.; (1996) 'The effects of feeding grass silage and molassed sugar beet pulp either separately or as an ensiled mixture on the nutritional status and colostrum production of twin bearing pregnant ewes'. Irish Journal of Agricultural and Food Research, 35 :99-112. [Details]
ODoherty, J.V., Maher, P.F. and Crosby, T.F; (1997) 'The performance of pregnant ewes and their progeny when offered grass silage, maize silage or a maize silage/ensiled super pressed pulp mixture during late pregnancy'. Livestock Science, 52 :11-19. [Details]
O'Doherty, J.V. and Crosby, T.F.; (1997) 'The effect of diet in late pregnancy on colostrum production and immunoglobulin absorption in sheep'. Journal of Animal Science, 64 :87-96. [Details]
O'Doherty, J.V. and Crosby, T.F.; (1997) 'Effects of molassed sugar beet pulp and formic acid on silage fermentation, intake and digestion, and rumen fermentation of sheep'. Irish Journal of Agricultural and Food Research, 36 :11-22. [Details]
O'Doherty, J.V. and Crosby, T.F.; (1998) 'Blood metabolite levels in late pregnant ewes as indicators of nutritional status'. Journal of Animal Science, 66 :675-683. [Details]
O' Doherty, J.V., Forde, S. and Callan, J.J.; (1999) 'The use of microbial Phytase in grower and finisher pig diets'. Irish Journal of Agricultural and Food Research, 38 :227-239. [Details]
O' Doherty, J.V. and Forde, S.; (1999) 'The effect of protease and -galactosidase supplementation on the nutritive value of peas for growing and finishing pigs'. Irish Journal of Agricultural and Food Research, 38 :219-226. [Details]
Keady, U; O'Doherty, JV; ; (2000) 'The effect of extrusion on the nutritive value of rapeseed meal for growing and finishing pigs'. Irish Journal of Agricultural and Food Research, 39 (3):419-431. [Details]
O'Doherty JV, and Keady U; (2000) 'The nutritive value of extruded and raw peas for growing and finishing pigs'. Journal of Animal Science, 70 :265-274. [Details]
Keady, U. and O' Doherty, J.V.; (2000) 'The effect of extrusion on the nutritive value of rape seed meal for growing and finishing pigs'. Journal of Animal Science, 40 :265-274. [Details]
O'Doherty, J.V., and McKeon, M.P.; (2000) 'Effect of nutrient density and group size on the performance of growing and finishing pigs given food using single-space feeders'. Journal of Animal Science, 71 :281-288. [Details]
O'Doherty, J.V., and McKeon, M.P.; (2000) 'The use of expeller copra meal in grower and finisher pig diets'. Livestock Science, 67 (1):55-65. [Details]
O'Doherty, J.V., and Keady, U.; (2001) 'The effect of expander processing and extrusion on the nutritive value of peas for pigs'. Journal of Animal Science, 72 :43-53. [Details]
O'Doherty, J.V., McGlynn, S.G., and Murphy, D.; (2001) 'The effect of expander processing and pelleting on the nutritive value of feed for growing and finishing pigs'. Journal of the Science of Food and Agriculture, 81 (1):135-141. [Details]
O' Doherty, J.V, Murphy, D. and McGlynn, S.G.; (2001) 'The effect of expander processing and byproduct inclusion levels on performance of grower-finisher pigs'. Journal of Animal Science, 73 :479-487. [Details]
O'Doherty, J.V. and McKeon, M.P.; (2001) 'A note on the nutritive value of extruded and raw peas for growing and finishing pigs'. Irish Journal of Agricultural and Food Research, 40 :97-104. [Details]
O'Mara, F; O'Doherty, J; ; (2001) 'The effect of removing fishmeal and meat-and-bone meal from animal diets'. Irish Veterinary Journal, 54 (5):244-245. [Details]
Evans, ACO; O'Doherty, JV; ; (2001) 'Endocrine changes and management factors affecting puberty in gilts'. Livestock Production Science, 68 (1):1-12. [Details]
Evans, A.C.O., and O'Doherty, J.V.; (2001) 'Endocrine changes and management factors affecting puberty in gilts'. Livestock Science, 68 (1):1-12. [Details]
Lawlor, P.G., Lynch, P.B., Caffrey, P.J and O Doherty, J.V.; (2002) 'Effect of pre- and post-weaning management on subsequent pig performance to slaughter and carcass quality'. Journal of Animal Science, 80 :1725-1735. [Details]
Brady, SM; Callan, JJ; Cowan, D; McGrane, M; O'Doherty, JV; ; (2002) 'Effect of phytase inclusion and calcium/phosphorus ratio on the performance and nutrient retention of grower-finisher pigs fed barley/wheat/soya bean meal-based diets'. Journal of the Science of Food and Agriculture, 82 (15):1780-1790. [Details]
Lawlor, PG; Lynch, PB; Gardiner, GE; Caffrey, PJ; O'Doherty, JV; ; (2002) 'Effect of liquid feeding weaned pigs on growth performance to harvest'. Journal of Animal Science, 80 (7):1725-1735. [Details]
O' Doherty, J.V, McGlynn, S.G. and Murphy, D.; (2002) 'The influence of fibre level and fat supplementation in expander processed diets on grower-finisher pig performance'. Journal of the Science of Food and Agriculture, 82 (9):1036-1043. [Details]
Lawlor, PG; Lynch, PB; Caffrey, PJ; O'Doherty, JV; ; (2003) 'The effect of choice feeding complete diets on the performance of weaned pigs'. Journal of Animal Science, 76 (NA):401-412. [Details]
Lawlor, PG; Lynch, PB; Caffrey, PJ; O'Doherty, JV; ; (2003) 'Effect of cooking wheat and maize on the performance of newly weaned pigs - 1. Age and weight at weaning'. Journal of Animal Science, 76 (NA):251-261. [Details]
Lawlor, PG; Lynch, PB; Caffrey, PJ; O'Doherty, JV; ; (2003) 'Effect of cooking wheat and maize on the performance of newly weaned pigs - 2. Level of dairy products and sequence of feeding'. Journal of Animal Science, 76 (NA):263-271. [Details]
Brady, SM; Callan, JJ; Cowan, D; McGrane, M; O'Doherty, JV; ; (2003) 'Effect of two microbial phytases on the performance and nutrient retention on grower-finisher pigs fed barley-maize-soyabean meal-based diets'. Irish Journal of Agricultural and Food Research, 42 (1):101-117. [Details]
Hoare, B; Cowan, D; McGrane, M; O'Doherty, JV; ; (2003) 'The effect of non-starch polysaccharide enzymes on the nutritive value of rapeseed meal for growing and finishing pigs'. Irish Journal of Agricultural and Food Research, 42 (2):255-263. [Details]
O'Doherty J.V., Nolan C.S. and McCarthy P.; (2004) 'Interaction between lactofeed level and soybean meal on growth performance of weanling pigs'. ANIMAL SCIENCE, 84 :371-380. [Details]
Pierce, KM; Callan, JJ; McCarthy, P; O'Doherty, JV; ; (2004) 'Effects of high dietary concentration of lactose and increased soya-bean meal inclusion in starter diets for piglets'. Journal of Animal Science, 79 (NA):445-452. [Details]
Carpenter D.A., O' Mara F.P. and O'Doherty J.V. ; (2004) 'The effect of dietary crude protein content on growth performance, carcass composition and nitrogen excretion in entire grower-finisher pigs'. IRISH JOURNAL OF AGRICULTURE AND FOOD RESEARCH, 43 (2):227-236. [Details]
Leek, ABG; Beattie, VE; O'Doherty, JV; ; (2004) 'The effects of dietary oil inclusion and oil source on apparent digestibility, faecal volatile fatty acid concentration and manure ammonia emission'. Journal of Animal Science, 79 (NA):155-164. [Details]
A.B.G. Leek, P. Duffy, T. Sweeney, V.E. Beattie and J.V. O'Doherty ; (2004) 'The effect of stocking density and social regrouping stressors on growth performance, carcass characteristics, nutrient digestibility and physiological stress responses in pigs'. ANIMAL SCIENCE, 79 :109-119. [Details]
Hayes, ET; Leek, ABG; Curran, TP; Dodd, VA; Carton, OT; Beattie, VE; O'Doherty, JV; ; (2004) 'The influence of diet crude protein level on odour and ammonia emissions from finishing pig houses'. Bioresource Technology, 91 (3):309-315. [Details]
Crosby, TF; O'Donnell, A; O'Doherty, JV; Quinn, PJ; Evans, ACO; ; (2005) 'Effects of exogenous progesterone on gestation length, foetal survival and colostrum yield in ewes'. Theriogenology, 64 (5):1121-1129. [Details]
Lewis, E; Boyle, LA; Lynch, PB; Brophy, P; O'Doherty, JV; ; (2005) 'The effect of two teeth resection procedures on the welfare of piglets in farrowing crates. Part 1'. Applied Animal Behaviour Science, 90 (3-4):233-249. [Details]
Lewis, E; Boyle, LA; Brophy, P; O'Doherty, JV; Lynch, PB; ; (2005) 'The effect of two piglet teeth resection procedures on the welfare of sows in farrowing crates. Part 2'. Applied Animal Behaviour Science, 90 (3-4):251-264. [Details]
O'Connell, MK; Lynch, PB; O'Doherty, JV; ; (2005) 'A comparison between feeding a single diet or phase feeding a series of diets, with either the same or reduced crude protein content, to growing finishing pigs'. Journal of Animal Science, 81 (NA):297-303. [Details]
Lewis, E; Boyle, LA; O'Doherty, JV; Brophy, P; Lynch, PB; ; (2005) 'The effect of floor type in farrowing crates on piglet welfare'. Irish Journal of Agricultural and Food Research, 44 (1):69-81. [Details]
Cullen, SP; Monahan, FJ; Callan, JJ; O'Doherty, JV; ; (2005) 'The effect of dietary garlic and rosemary on grower-finisher pig performance and sensory characteristics of pork'. Irish Journal of Agricultural and Food Research, 44 (1):57-67. [Details]
O'Doherty J.V., Nolan C.S., Callan J.J. and McCarthy P. ; (2005) 'Interaction between lactose level and antimicrobial growth promoters on growth performance of weanling pigs'. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, 85 (15):371-380. [Details]
Pierce K.M., Callan J.J., McCarthy P. and O'Doherty J.V.; (2005) 'Performance of weanling pigs offered low or high lactose diets supplemented with avilamycin or inulin'. ANIMAL SCIENCE, 80 :313-318. [Details]
M.K. O'Connell, P.B. Lynch and J.V. O'Doherty ; (2005) 'A note on the response of growing-finishing pigs to increasing the threonine to lysine ratio of diets with reduced lysine content'. The Pig Journal, :19-26. [Details]
Pierce, KM; Sweeney, T; Brophy, PO; Callan, JJ; McCarthy, P; O'Doherty, JV; ; (2005) 'Dietary manipulation post weaning to improve piglet performance and gastro-intestinal health'. Journal of Animal Science, 81 (NA):347-356. [DOI] [Details]
M. O'Connell, J.J. Callan and J.V. O'Doherty; (2005) 'The interaction between cereal type and lactose level on piglet performance and diet digestibility post weaning'. ANIMAL SCIENCE, 81 :265-270. [Details]
M.K. O'Connell, P.B. Lynch, J.V. O'Doherty; (2005) 'Determination of the optimum dietary lysine concentration for growing pigs housed in pairs and in groups'. ANIMAL SCIENCE, 81 :249-256. [Details]
O'Connell, MK; Lynch, PB; O'Doherty, JV; ; (2005) 'Management strategies to maximize pigmeat output : effect of group size and split-marketing'. Journal of Animal Science, 81 (NA):171-177. [Details]
A.B.G. Leek, J.J. Callan, R.W. Henry and J.V. O'Doherty; (2005) 'The application of low crude protein wheat-soyabean diets to growing and finishing pigs. 1. The effect on the growth performance and carcass characteristics of boars and gilts'. IRISH JOURNAL OF AGRICULTURE AND FOOD RESEARCH, 44 . [Details]
Leek, ABG; Callan, JJ; Henry, RW; O'Doherty, JV; ; (2005) 'The application of low crude protein wheat-soyabean diets to growing and finishing pigs - 2. The effects on nutrient digestibility, nitrogen excretion, faecal volatile fatty acid concentration and ammonia emission from boars'. Irish Journal of Agricultural and Food Research, 44 (2):247-260. [Details]
Cullen S.P., Monahan F.J. and O'Doherty, J.V. ; (2005) 'The effect of dietary garlic and rosemary on grower-finisher pig performance and sensory characteristics of pork'. Irish Journal of Agriculture and Food Research, :57-67. [Details]
M.K. O'Connell, P.B. Lynch, J.V. O'Doherty; (2005) 'A comparison between feeding a single diet or phase feeding a series of diets, with either the same or reduced crude protein content, to growing finishing pigs'. ANIMAL SCIENCE, 81 :297-304. [Details]
O'Connell, JM; Sweeney, T; Callan, JJ; O'Doherty, JV; ; (2005) 'The effect of cereal type and exogenous enzyme supplementation in pig diets on nutrient digestibility, intestinal microflora, volatile fatty acid concentration and manure ammonia emissions from finisher pigs'. Journal of Animal Science, 81 (NA):357-364. [Details]
Reynolds, A.M. and O'Doherty J.V. ; (2006) 'The effect of amino acid restriction during the grower phase on compensatory growth, carcass composition and nitrogen utilisation in grower-finisher pigs'. LIVESTOCK PRODUCTION SCIENCE, 104 :112-120. [Details]
O'Connell, MK; Lynch, PB; O'Doherty, JV; ; (2006) 'Determination of the optimum dietary lysine concentration for boars and gilts penned in pairs and in groups in the weight range 60 to 100 kg'. Journal of Animal Science, 82 :65-73. [Details]
Lewis, E; Boyle, LA; O'Doherty, JV; Lynch, PB; Brophy, P; ; (2006) 'The effect of providing shredded paper or ropes to piglets in farrowing crates on their behaviour and health and the behaviour and health of their dams'. Applied Animal Behaviour Science, 96 (1-2):1-17. [Details]
Keane, CJ; Hanlon, AJ; Roche, JF; Burton, JL; Mee, JF; O'Doherty, JV; Sweeney, T; ; (2006) 'Short communication: A potential antiapoptotic phenotype in neutrophils of cows milked once daily in early lactation'. Journal of Dairy Science, 89 (3):1024-1027. [Details]
Reynolds, AM; O'Doherty, JV; ; (2006) 'The effect of amino acid restriction during the grower phase on compensatory growth, carcass composition and nitrogen utilisation in grower-finisher pigs'. Livestock Science, 104 (1-2):112-120. [Details]
Keane, C.J., Hanlon, A.J., Roche, J.F., Burton, J.L., Mee, J.F., O'Doherty, J.V. and Sweeney, T. ; (2006) 'A potential anti-apopyotic phenotype in neutrophils of cows milked once daily in early lactation'. Journal of Dairy Science, 89 :1024-1027. [Details]
Pierce, KM; Sweeney, T; Brophy, PO; Callan, JJ; Fitzpatrick, E; McCarthy, P; O'Doherty, JV; ; (2006) 'The effect of lactose and inulin on intestinal morphology, selected microbial populations and volatile fatty acid concentrations in the gastro-intestinal tract of the weanling pig'. Journal of Animal Science, 82 :311-318. [Details]
Pierce, KM; Sweeney, T; Callan, JJ; Byrne, C; McCarthy, P; O'Doherty, JV; ; (2006) 'The effect of inclusion of a high lactose supplement in finishing diets on nutrient digestibility, nitrogen excretion, volatile fatty acid concentrations and ammonia emission from boars'. Animal Feed Science and Technology, 125 (1-2):45-60. [DOI] [Details]
O'Connell, MJ,Callan, JJ,O'Doherty, JV; (2006) 'The interaction between threonine and avilamycin on piglet performance and diet digestibility post weaning'. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, 86 (2):191-196. [DOI] [Details]
O'Connell, MK; Lynch, PB; O'Doherty, JV; ; (2006) 'The effect of dietary lysine restriction during the grower phase and subsequent dietary lysine concentration during the realimentation phase on the performance, carcass characteristics and nitrogen balance of growing-finishing pigs'. Livestock Science, 101 (1-3):169-179. [Details]
O'Connell, JM; Callan, JJ; O'Doherty, JV; ; (2006) 'The effect of dietary crude protein level, cereal type and exogenous enzyme supplementation on nutrient digestibility, nitrogen excretion, faecal volatile fatty acid concentration and ammonia emissions from pigs'. Animal Feed Science and Technology, 127 (1-2):73-88. [Details]
Lynch, M.B., Sweeney, T., Callan, J.J. and O'Doherty, J.V.; (2007) 'The effect of dietary barley level on volatile fatty acid concentration and manure ammonia emissions in finishing pigs'. Livestock Science, 109 (1-3):236-239. [Details]
Lynch, M.B., Callan, J.J. and O'Doherty, J.V.; (2007) 'The interaction between lactose level and enzyme supplementation and form of barley processing on performance, digestibility and faecal volatile fatty acid concentration of weanling pigs fed barley-based diets'. Animal Feed Science and Technology, . Available Online [Details]
Sweeney, T,Fox, J,Robertson, L,Kelly, G,Duffy, P,Lonergan, P,O'Doherty, J,Roche, JF,Evans, NP; (2007) 'Postnatal exposure to octylphenol decreases semen quality in the adult ram'. Theriogenology, 67 (NA):1068-1075. [DOI] [Details]
Lynch, M.B., Callan, J.J. and O'Doherty, J.V. ; (2007) 'The interaction between lactose level and enzyme supplementation and form of barley processing on performance, digestibility and faecal volatile fatty acid concentration of weanling pigs fed barley based diets'. Animal Feed Science and Technology, . [Details]
Lynch, M.B., T. Sweeney, J.J. Callan and J.V. O'Doherty.; (2007) 'Effects of increasing the intake of dietary β-glucans by exchanging wheat for barley on nutrient digestibility, nitrogen excretion, intestinal microflora, volatile fatty acid concentration and manure ammonia emissions in finishing pigs'. Animal, 6 (1):812-819. [Details]
Lynch, M.B., Sweeney, T., Callan, J.J. and O'Doherty, J.V.; (2007) 'The effect of high and low dietary crude protein and inulin supplementation on nutrient digestibility, nitrogen excretion, intestinal microflora and manure ammonia emissions from finisher pigs'. Animal, 1 (8):1112-1121. [Details]
Saeed, A., O'Doherty, M., O'Doherty, J. and O'Keefe, M.; (2007) 'Analysis of the visual and refractive outcome following Laser in-situ keratomileusis (LASIK) retreatment over a four-year follow-up period'. International Opthalmology, 27 :23-29. [Details]
O'Doherty, M., Kirwan, C., O'Keefe, M. and O'Doherty, J.V. ; (2007) 'Post operative pain following Epi-Lasik, Lasek, and PRK for Myopia'. Journal of Refractive Surgery, 23 :133-138. [Details]
Garry, B.P., Pierce, K.M and O'Doherty, J.V. ; (2007) 'The effect of phase-feeding on the  growth performance, carcass characteristics and nitrogen balance of growing and  finishing pigs'. Irish Journal of Agriculture and Food Research, 46 :93-104. [Details]
O'Doherty JV, Leek AB, Hayes ET, Curran TP, Callan JJ, Beattie VE, Dodd VA, ; (2007) 'The influence of manure composition on emissions of odour and ammonia from finishing pigs fed different concentrations of dietary crude protein'. Bioresource Technology, 98 (18):3431-3439. [DOI] [Details]
Garry, B.P., Fogarty, M., Curran, T.P. and O'Doherty, J.V.; (2007) 'The effect of cereal type and exogenous enzyme supplementation in pig diets on odour and ammonia emissions from finisher pigs'. Animal, 1 :751-757. [Details]
Leek, A.B.G., Hayes, E., Curran, T.P., Callan, J.J., Dodd, V.A., Beattie, V.E. and O'Doherty, J.V. ; (2007) 'The influence of manure composition on emissions of odour and ammonia from finishing pigs fed different concentrations of dietary crude protein'. Bioresource Technology, 98 (18):3431-3439. [Details]
Lynch, M.B., Callan, J.J. and O'Doherty, J.V.; (2007) 'The interaction between enzyme supplementation and lactose level on the performance of weanling pigs fed barley based diets'. Livestock Science, 108 (1-3):258-261. Available Online [Details]
Garry, B.P., Fogarty, M., Curran, T.P. and O'Doherty, J.V.; (2007) 'Effect of cereal type and exogenous enzyme supplementation in pig diets on odour and ammonia emissions'. Livestock Science, 109 (1-3):212-215. Available Online [Details]
Callan, J.J., Garry, B.P. and O'Doherty, J.V.; (2007) 'The effect of expander processing and screen size on nutrient digestibility, growth performance, selected faecal microbial populations and faecal volatile fatty acid concentrations in grower'finisher pigs'. Animal Feed Science Technology, 134 (3-4):223-234. Available Online [Details]
Leek, A.B.G., Callan, J.J., Reilly, P., Beattie, V.E. and O'Doherty, J.V.; (2007) 'Apparent component digestibility and manure ammonia emission in finishing pigs fed diets based on barley, maize or wheat prepared without or with exogenous non-starch polysaccharide enzymes'. Animal Feed Science and Technology, 135 (1-2):86-99. Available Online [Details]
Lynch, M.B., Sweeney, T., Callan, J.J. and O'Doherty, J.V.; (2007) 'The effect of dietary crude protein concentration and inulin supplementation on nitrogen excretion and intestinal microflora from finisher pigs'. Livestock Science, 109 (1-3):204-207. Available Online [Details]
Garry, B. P., Fogarty, M., Curran, T.P., O'Connell, M.J. and O'Doherty, J.V.; (2007) 'The effect of cereal type and enzyme addition on pig performance, intestinal microflora, and ammonia and odour emissions'. Animal, :751-757. [Details]
Pierce, K.M., Callan, J.J., McCarthy, P. and O'Doherty, J.V.; (2007) 'The interaction between lactose level and crude protein concentrations on piglet post-weaning performance, nitrogen metabolism, selected faecal microbial populations and faecal volatile fatty acid concentrations'. Animal Feed Science and Technology, 132 (1):267-282. Available Online [DOI] [Details]
Ayman Saeed, Maeve O'Doherty, John O'Doherty and Michael O'Keefe (2008) ; (2008) 'Laser subepithelial keratectomy retreatment after laser in situ keratomileusis'. Journal of Cataract and Refractive Surgery, 34 (10):1736-1741. [Details]
Ryan, W.F., Lynch, P.B., O'Doherty, J.V.; (2010) 'A survey of bone integrity from cull sows in Ireland'. Irish Veterinary Journal, 63 (12):754-758. Available Online [Details]
Ryan, M.T., Smith, A.G., O'Doherty, J.V., Bahar, B., Reilly, P., Sweeney, T.; (2010) 'Effects of nutrient supplementation with laminarin derived from Laminaria hyperborea and Laminaria digitata on mucin gene expression in the porcine ileum'. Livestock Science, 133 (1-3):236-238. [Details]
Leonard, S.G., Sweeney, T., Bahar, B., Pierce, K.M., Lynch, B.P., O'Doherty, J.V.; (2010) 'The effects of maternal dietary supplementation with seaweed extract and fish oil on the humoral immune response and performance of suckling piglets'. Livestock Science, 134 (1-3):211-241. Available Online [Details]
Lynch, M.B., Sweeney, T., Callan, J.J., O'Sullivan, J.T., O'Doherty, J.V.; (2010) 'The effect of dietary Laminaria derived laminarin and fucoidan on intestinal microflora and volatile fatty acid concentration in pigs'. Livestock Science, 133 (1-3):157-160. [Details]
Varley, P.F., Lynch, P.B., Callan, J.J., O'Doherty, J.V.; (2010) 'Effect of phytase concentration in a low phosphorus weaner pig diet and its subsequent effect on bone development in the finished pig'. Livestock Science, 134 (1-3):218-220. Available Online [Details]
O'Shea, C.J., Gahan, D.A., Lynch, M.B., Callan, J.J., Flynn, B., O'Doherty, J.V.; (2010) 'Effect of supplementation of exogenous beta-glucans and enzymes on nutrient digestibility, manure odour and ammonia emissions from finisher boars'. Livestock Science, 134 (1-3):190-193. Available Online [Details]
Leonard SG, Sweeney T, Pierce KM, Bahar B, Lynch BP and O'Doherty JV. ; (2010) 'The effects of supplementing the diet of the sow with seaweed extracts and fish oil on aspects of gastrointestinal health and performance of the weaned piglet'. British Journal of Nutrition, 134 :135-138. [Details]
Varley PF, Ryan M, Sweeney T and O'Doherty JV; (2011) 'The effect of phosphorus restriction during the weaner phase on compensatory growth serum osteocalcin and bone mineralization in gilts'. Livestock Science, 135 (2-3):282-288. [Details]
Leonard, S.G., Sweeney, T., Pierce, K.M., Bahar, B., Lynch, B.P., O'Doherty, J.V. ; (2010) 'The effects of maternal dietary supplementation with seaweed extract and fish oil on the humoral immune response and performance of suckling piglets'. Animal Science, 88 (9):2988-2997. [Details]
Lynch MB, Sweeney T, Callan JJ, O¿Sullivan JT and O¿Doherty JV ; (2010) 'The effect of dietary Laminaria hyperborea derived laminarin and fucoidan on nutrient digestibility, nitrogen utilisation, intestinal microflora and volatile fatty acid concentration in pigs'. Journal of the Science of Food and Agriculture, 90 (3):430-437. [Details]
Varley PF, Sweeney T, Callan JJ, Flynn B, McCarney C, O'Doherty JV ; (2010) 'Effect of phosphorus level and inulin inclusion on phosphorus calcium and nitrogen utilization intestinal microflora and bone development'. Journal of the Science of Food and Agriculture, 90 :2447-2454. [Details]
Smith AG, O¿Doherty JV, Reilly P, Ryan MT, Bahar B and Sweeney T; (2010) 'The effects of laminarin derived from Laminaria spp. on measurements of gut health: select microbiota, intestinal fermentation, mucin gene expression and cytokine gene expression in the pig'. British Journal of Nutrition, . [Details]
O¿Shea CJ, Gahan D, Lynch MB, Callan JJ and O¿Doherty JV ; (2010) 'Comparison of a wheat-based diet supplemented with purified β-glucans, with an oat-based diet on nutrient digestibility, nitrogen utilization, distal gastrointestinal composition and manure odor and ammonia emissions from finishing pigs'. Animal Science, . [Details]
Leonard SG, Sweeney T, Bahar B, Lynch BP, O'Doherty JV; (2010) 'Effect of maternal fish oil and seaweed extract supplementation on colostrum and milk composition, humoral immune response, and performance of suckled piglets'. Animal Science, 88 (9):2988-2997. [DOI] [Details]
O'Shea CJ, Lynch MB, Sweeney T, Gahan DA, Callan JJ, O'Doherty JV; (2010) 'Comparison of a wheat-based diet supplemented with purified {beta}-glucans, with an oat-based diet on nutrient digestibility, nitrogen utilization, distal gastrointestinal composition and manure odor and ammonia emissions from finishing pigs'. Animal Science, 89 (2):438-447. [DOI] [Details]
W.F. Ryan, P.B. Lynch, J.V. O¿ Doherty ; (2010) 'A survey of bone integrity from cull sows in Ireland'. Irish Veterinary Journal, 63 (12):754-758. [Details]
Varley PF, Callan JJ and O¿Doherty JV.(; (2010) 'Effect of phosphorus level and phytase inclusion on performance bone mineral concentration apparent nutrient digestibility mineral and nitrogen utilization in finisher pigs'. Irish Journal of Agriculture and Food Research, 49 (2):141-152. [Details]
Varley, P.F., Lynch, P.B., Callan, J.J., O'Doherty, J.V.; (2010) 'Effect of dietary phosphorus level and phytase inclusion on weaner pig performance and subsequent bone development'. Livestock Science, 134 (1-3):215-217. Available Online [Details]
Leonard, S.G., Sweeney, T., Pierce, K.M., Bahar, B., Lynch, B.P., O'Doherty, J.V.; (2010) 'The effects of supplementing the diet of the sow with seaweed extracts and fish oil on aspects of gastrointestinal health and performance of the weaned piglet'. Livestock Science, 134 (1-3):135-138. [DOI] [Details]
Varley, P.F., Callan, J.J., O'Doherty, J.V.; (2010) 'Effect of crude protein and phosphorus level in a phytase supplemented grower finisher pig diet on phosphorus and calcium metabolism'. Livestock Science, 134 (1-3):94-96. Available Online [Details]
O'Doherty, J.V., Dillon, S., Figat, S., Callan, J.J., Sweeney, T.; (2010) 'The effects of lactose inclusion and seaweed extract derived from Laminaria spp. on performance, digestibility of diet components and microbial populations in newly weaned pigs'. Animal Feed Science and Technology, 157 (3-4):173-180. Available Online [Details]
McDonnell, P., O'Shea, C., Figat, S., O'Doherty, J.V.; (2010) 'Influence of incrementally substituting dietary soya bean meal for rapeseed meal on nutrient digestibility, nitrogen excretion, growth performance and ammonia emissions from growing-finishing pigs'. Archives of Animal Nutrition, 64 (5):412-424. Available Online [Details]
Lejeune, A., Monahan, F.J., Moloney, A.P., Earley, B., Black, A.D., Campion, D.P., Englishby, T., Reilly, P., O'Doherty, J., Sweeney, T.; (2010) 'Peripheral and gastrointestinal immune systems of healthy cattle raised outdoors at pasture or indoors on a concentrate-based ration'. BMC veterinary research, 6 :19. Available Online [Details]
Smith, A.G., Reilly, P., Sweeney, T., Pierce, K.M., Gahan, D.A., Callan, J.J., O'Doherty, J.V. (2010) 'The effect of cereal type and exogenous enzyme supplementation on intestinal microbiota and nutrient digestibility in finisher pigs'. Livestock Science, 133 (1-3):148-150. [DOI] [Details]
Dillon, S., Sweeney, T., Figat, S., Callan, J.J., O'Doherty, J.V.; (2010) 'The effects of lactose inclusion and seaweed extract on performance, nutrient digestibility and microbial populations in newly weaned piglets'. Livestock Science, 134 (1-3):205-207. Available Online [Details]
Ryan, M.T., Collins, C.B., O'Doherty, J.V., Sweeney, T.; (2010) 'Selection of stable reference genes for quantitative real-time PCR in porcine gastrointestinal tissues'. Livestock Science, 133 (1-3):42-44. Available Online [Details]
Alam T, Bahar B, Waters SM, McGee M, O'Doherty JV, Sweeney T; (2012) 'Functional characterisation of the bovine neuropeptide Y gene promoter and evaluation of the transcriptional activities of promoter haplotypes'. Molecular biology reports, PMID:21562764 . [DOI] [Details]
Sweeney T, Dillon S, Fanning J, Egan J, Figat S, Gutierrez JJM, Mannion C, Leonard F and O¿Doherty JV; (2011) 'The effects of seaweed extracts and organic acids on digestive fermentation and selective micro biota in newly weaned pigs experimentally challenged with Salmonella Typhimurium'. Animal Feed Science and Technology, 165 :85-94. [Details]
McDonnell P, O¿Shea C, Figat S, Callan JJ and O¿Doherty JV. ; (2011) 'The response of growth performance, nitrogen and phosphorus excretion of growing-finishing pigs to diets containing incremental levels of maize dried distiller¿s grains with soluble'. Animal Feed Science and Technology, 169 (1-2):104-112. [Details]
S. G. Leonard, T. Sweeney, B. Bahar, B. P. Lynch and J. V. O¿Doherty ; (2011) 'Effects of dietary seaweed extract supplementation in sows and post-weaned pigs on performance, intestinal morphology, intestinal microflora and immune status'. British Journal of Nutrition, 106 (5):688-699. [Details]
S. G. Leonard, T. Sweeney, B. Bahar and J. V. O'Doherty; (2011) 'Effect of maternal seaweed extract supplementation on suckling piglet growth, humoral immunity, selected microflora, and immune response after an ex vivo lipopolysaccharide challenge'. Animal Science, . [DOI] [Details]
O'Shea CJ, Sweeney T, Lynch MB, Callan JJ, O'Doherty JV; (2011) 'Modification of selected bacteria and markers of protein fermentation in the distal gastrointestinal tract of pigs upon consumption of chitosan is accompanied by heightened manure odor emissions'. Animal Science, 89 (5):1366-1375. [DOI] [Details]
Pauly C, Spring P, Gahan D and O¿Doherty JV ; (2011) 'The effect of cereal type and enzyme supplementation on carcass characteristics, volatile fatty acids and intestinal microflora and boar taint in entire male pigs'. Animal, 5 (3):378-386. [Details]
A. M. Walsh, T. Sweeney, B. Bahar, B. Flynn and J. V. O'Doherty (2012) 'The effect of chitooligosaccharide supplementation on intestinal morphology, selected microbial populations, volatile fatty acidconcentrations and immune gene expression in the weaned pig'. Animal, . [DOI] [Details]
O'Shea, C.J., Sweeney, T., Bahar, B., Ryan, M.T. and J.V. O'Doherty (2012) 'Singular consumption of either Lactobacillus plantarum or inulin reduces manure odour from finishing pigs, however this is negated when offered in combination'. Animal Science, . [Details]
T. Sweeney, C. Collins, P. Reilly, K.P. Pierce and J.V. O'Doherty (2012) 'Effect of purified β-glucans derived from Laminaria digitata, Laminaria hyperborea and Saccharomyces cerevisiae on piglet performance, selected bacterial populations, volatile fatty acids and pro-inflammatory cytokines in the gastrointestinal tract of pigs'. British Journal of Nutrition, . [DOI] [Details]
S. G. Leonard, T. Sweeney, B. Bahar and J. V. O'Doherty (2012) 'Effect of maternal seaweed extract supplementation on suckling piglet growth, humoral immunity, selected microflora, and immune response after an ex vivo lipopolysaccharide challenge'. Animal Science, 90 (2):505-514. [Details]
Alam T, Bahar B, Waters SM, McGee M, O'Doherty JV, Sweeney T. (2012) 'Functional characterisation of the bovine Neuropeptide Y gene promoter and evaluation of the transcriptional activities of promoter haplotypes'. Molecular biology reports, 39 (2):919-928. [Details]
Ryan, W.F., Lynch, P.B., O'Doherty, J.V.; (2011) 'Effect of dietary phosphorus on the development of bone mineral density of pigs assessed using dual energy X-ray absorptiometry'. Livestock Science, 137 (1-3):101-107. Available Online [Details]
Sweeney, T., Dillon, S., Fanning, J., Egan, J., O'Shea, C.J., Figat, S., Gutierrez, J.J.M., Mannion, C., Leonard, F., O'Doherty, J.V.; (2011) 'Evaluation of seaweed-derived polysaccharides on indices of gastrointestinal fermentation and selected populations of microbiota in newly weaned pigs challenged with Salmonella Typhimurium'. Animal Feed Science and Technology, 165 (1-2):85-94. Available Online [Details]
O'Shea, C.J., Sweeney, T., Lynch, M.B., Gahan, D.A., Flynn, B.A., O'Doherty, J.V.; (2011) 'The effect of introducing purified Beta-glucans to a wheat-based diet on total tract digestibility and gaseous manure emissions from pigs as compared with consumption of a beta-glucan-rich, barley-based diet'. Animal Feed Science and Technology, 165 (1-2):95-104. [Details]
Varley, P.F., Flynn, B., Callan, J.J., O'Doherty, J.V.; (2011) 'Effect of crude protein and phosphorus level on growth performance, bone mineralisation and phosphorus, calcium and nitrogen utilisation in grower-finisher pigs'. Archives of Animal Nutrition, 65 (2):134-147. Available Online [Details]
Leonard, S.G., Sweeney, T., Bahar, B., Lynch, B.P., O'Doherty, J.V.; (2011) 'Effect of dietary seaweed extracts and fish oil supplementation in sows on performance, intestinal microflora, intestinal morphology, volatile fatty acid concentrations and immune status of weaned pigs'. British Journal of Nutrition, 105 (4):549-560. Available Online [Details]
Ryan, W.F., Lynch, P.B., O'Doherty, J.V.; (2011) 'Compensatory effect of dietary phosphorus on performance of growing pigs and development of bone mineral density assessed using dual energy X-ray absorptiometry'. Livestock Science, 138 (1-3):89-95. Available Online [Details]
Hager, AS, Ryan, L.A.M., Schwab, C, Ganzle, M, O'Doherty, J.V and Arendt, E.K.; (2011) 'Influence of the soluble fibres inulin and oat B-glucan on quality of dough and bread'. European Food Research and Technology, 232 (3):405-413. Available Online [Details]
Varley, P.F., Flynn, B., Callan, J.J., O'Doherty, J.V.; (2011) 'Effect of phytase level in a low phosphorus diet on performance and bone development in weaner pigs and the subsequent effect on finisher pig bone development'. Livestock Science, 138 (1-3):152-158. Available Online [Details]
Meade, G., Pierce, K., O'Doherty, J.V., Mueller, C., Lanigan, G. and Mc Cabe, T.; (2011) 'Ammonia and nitrous oxide emissions following land application of high and low nitrogen pig manures to winter wheat at three growth stages'. Agriculture, Ecosystems and Environment, 140 (1-2):208-217. [DOI] [Details]
Murphy, D.P., O'Doherty, J.V., Boland, T.M., O'Shea, C.J., Callan, J.J., Pierce, K.M., Lynch, M.B.; (2011) 'The effect of benzoic acid concentration on nitrogen metabolism, manure ammonia and odour emissions in finishing pigs'. Animal Feed Science and Technology, 163 (2-4):194-199. Available Online [DOI] [Details]
Smith, A.G., O'Doherty, J.V., Reilly, P., Ryan, M.T., Bahar, B., Sweeney, T.; (2011) 'The effects of laminarin derived from Laminaria digitata on measurements of gut health: selected bacterial populations, intestinal fermentation, mucin gene expression and cytokine gene expression in the pig'. The British journal of nutrition, 105 (5):669-677. Available Online [Details]
Pauly, C., Spring, P., Gahan, D., Odoherty, J.V.; (2011) 'The effect of cereal type and enzyme supplementation on carcass characteristics, volatile fatty acids and intestinal microflora and boar taint in entire male pigs'. Animal, 5 (3):378-386. Available Online [Details]
Varley, P.F., Callan, J.J., O'Doherty, J.V.; (2011) 'Effect of dietary phosphorus and calcium level and phytase addition on performance, bone parameters, apparent nutrient digestibility, mineral and nitrogen utilization of weaner pigs and the subsequent effect on finisher pig bone parameters'. Animal Feed Science and Technology, 165 (3-4):201-209. Available Online [Details]
Lynch, M.B., Sweeney, T., Callan, J.J., O'Sullivan, J.T., O'Doherty, J.V.; (2010) 'The effect of dietary Laminaria-derived laminarin and fucoidan on nutrient digestibility, nitrogen utilisation, intestinal microflora and volatile fatty acid concentration in pigs'. Journal of the Science of Food and Agriculture, 90 (3):430-437. Available Online [Details]
O'Shea, C.J., Gahan, D.A., Lynch, M.B., Callan, J.J., O'Doherty, J.V.; (2010) 'Effect of beta-glucan source and exogenous enzyme supplementation on intestinal fermentation and manure odour and ammonia emissions from finisher boars'. Livestock Science, 134 (1-3):42-44. Available Online [Details]
Reilly, P., Sweeney, T., Smith, A.G., Pierce, K.M., Gahan, D.A., Callan, J.J., O'Doherty, J.V.; (2010) 'The effects of cereal-derived beta-glucans and enzyme supplementation on intestinal microbiota, nutrient digestibility and mineral metabolism in pigs'. Livestock Science, 133 (1-3):144-147. [DOI] [Details]
Pauly, C., Spring-Staehli, P., O'Doherty, J.V., Kragten, S.A., Dubois, S., Messadène, J., Bee, G.; (2010) 'The effects of method of castration, rearing condition and diet on sensory quality of pork assessed by a trained panel'. Meat Science, 86 (2):498-504. Available Online [Details]
O'Doherty, J.V., Gahan, D.A., O'Shea, C., Callan, J.J., Pierce, K.M.; (2010) 'Effects of phytase and 25-hydroxyvitamin D3 inclusions on the performance, mineral balance and bone parameters of grower-finisher pigs fed low-phosphorus diets'. Animal, 4 (10):1634-1640. Available Online [Details]
O'Shea, C.J., Sweeney, T., Lynch, M.B., Callan, J.J., O'Doherty, J.V.; (2010) 'Effect of beta-glucans contained in barley- and oat-based diets and exogenous enzyme supplementation on gastrointestinal fermentation of finisher pigs and subsequent manure odor and ammonia emissions'. Journal of Animal Science, 88 (4):1411-1420. Available Online [Details]
Reilly, P., Sweeney, T., O'Shea, C., Pierce, K.M., Figat, S., Smith, A.G., Gahan, D.A., O'Doherty, J.V.; (2010) 'The effect of cereal-derived beta-glucans and exogenous enzyme supplementation on intestinal microflora, nutrient digestibility, mineral metabolism and volatile fatty acid concentrations in finisher pigs'. Animal Feed Science and Technology, 158 (3-4):165-176. Available Online [Details]
Smith, A.G., Ryan, M., O'Doherty, J.V., Reilly, P., Bahar, B., Sweeney, T.; (2010) 'Effects of dietary supplementation with laminarin derived from Laminaria hyperborea and Laminaria digitata on colonic mucin gene expression in pigs'. Livestock Science, 133 (1-3):204-206. [Details]
O'Doherty, J.V., McDonnell, P., Figat, S.; (2010) 'The effect of dietary laminarin and fucoidan in the diet of the weanling piglet on performance and selected faecal microbial populations'. Livestock Science, 134 (1-3):208-210. Available Online [Details]
O'Shea, C.J., Lynch, M.B., Callan, J.J., O'Doherty, J.V.; (2010) 'Dietary supplementation with chitosan at high and low crude protein concentrations promotes Enterobacteriaceae in the caecum and colon and increases manure odour emissions from finisher boars'. Livestock Science, 134 (1-3):198-201. Available Online [Details]
O'Shea CJ, Sweeney T, Lynch MB, Gahan DA, Callan JJ and O'Doherty, JV, ; (2010) 'Effect of beta-glucans contained in barley- and oat-based diets and exogenous enzyme supplementation on gastrointestinal fermentation of finisher pigs and subsequent manure odor and ammonia emissions'. Animal Science, 88 (4):1411-1420. [DOI] [Details]
W. F. Ryan, P. B. Lynch, J. V. O'Doherty; (2010) 'Survey of cull sow bone and joint integrity in the Moorepark Research Farm herd'. VETERINARY RECORD, 166 (9):268-271. [Details]
P. McDonnell, S. Figat and J. V. O'Doherty; (2010) 'The effect of dietary laminarin and fucoidan in the diet of the weanling piglet on performance, selected faecal microbial populations and volatile fatty acid concentrations'. Animal, 4 (4):579-585. [Details]
J.V. O'Doherty, S. Dillon, S. Figat, J.J. Callan and T. Sweeney ; (2010) 'The effects of lactose inclusion and seaweed extract derived from Laminaria spp. on performance, nutrient digestibility and microbial populations in newly weaned piglets'. Animal Feed Science and Technology, 157 (3-4):173-180. [DOI] [Details]
A Lejeune, F J , A P Moloney, B Earley, A Black, D P Campion, T Englishby, P Reilly, J. O¿Doherty and T Sweeney; (2010) 'Peripheral and gastrointestinal immune systems of healthy cattle raised outdoors at pasture or indoors on a concentrate-based ration'. BMC Veterinary Research, 6 :19. [DOI] [Details]
M.B.Lynch, J.J.Callan and J.V.O¿Doherty ; (2009) 'The interaction between  dietary crude protein and fermentable carbohydrate source on post weaning performance, diet digestibility and selected faecal microbial populations and volatile fatty acid concentration'. Livestock Science, 124 (1-3):93-100. [Details]
C. Pauly, P. Spring, J. V. O¿Doherty, S. Ampuero Kragten, G. Bee; (2009) 'Growth performance, carcass characteristics and meat quality of group-penned surgically castrated, immunocastrated (Improvac®) and entire male pigs and individually penned entire male pigs'. Animal, 3 (7):1057-1066. [Details]
C.J. O¿Shea., M.B.Lynch, J.J.Callan and J.V.O¿Doherty ; (2009) 'Ammonia emissions and dry matter of separated pig manure fractions as affected by crude protein concentration and sugar beet pulp inclusion of finishing pig diets'. Agriculture, Ecosystems and Environment, 131 (3-4):154-160. [Details]
P. Reilly,J.V. O¿Doherty , K.M. Pierce, J.J. Callan, J.T. O¿ Sullivan and T. Sweeney; (2008) 'The effects of seaweed extract inclusion on gut health and immune status of the weaned pig'. Animal, 2 (10):1465-1473. [Details]
D.A.Gahan, M.B.Lynch, J.J.Callan, J.T. O¿ Sullivan and J.V. O¿Doherty ; (2009) 'Performance of weanling piglets offered low, medium or high lactose diets supplemented with a seaweed extract from Laminaria spp'. Animal, 3 (1):24-31. [Details]
C. Pauly, P. Spring, J. O¿Doherty, S. Ampuero K., G. Bee; (2008) 'Performance, meat quality and boat taint of castrates and entire male pigs fed a standard and a raw potato starch-enriched diet'. Animal, 2 (11):1707-1715. [Details]
G.E. Gardiner, A.J. Campbell, J.V. O'Doherty, E. Pierce, P.B. Lynch, F.C. Leonard, C.; (2008) 'Effect of Ascophyllum nodosum extract on  growth performance, diet digestibility, carcass characteristics and selected intestinal microflora populations of grower-finisher pigs'. Animal Feed Science and Technology, 141 :259-273. [Details]
Lynch, M.B., O'Shea, C.J., Sweeney, T. Callan, J.J. and O'Doherty, J.V.; (2008) 'Effect of crude protein concentration and sugar beet pulp on nutrient digestibility, nitrogen excretion, intestinal fermentation and manure ammonia and odour emissions from finisher pigs. '. Animal, 2 (3):425-434. [Details]
 

Conference Publications

J. V. O'Doherty, S. Dillon, J. J. Callan; (2009) The effects of lactose inclusion and seaweed sugars on performance, nutrient digestibility and microbial populations in newly weaned piglets American Society of Animal Science Meeting, Montreal, Canada [Details]
P. McDonnell, S. Figat, J. J. Callan, J. V. O'Doherty; (2009) The effects of increasing the level of rapeseed meal in the diet of the growing-finishing pig on the growth performance and nitrogen and phosphorus excretion American Society of Animal Science Meeting, Montreal, Canada [Details]
P. McDonnell, J. J. Callan, J. V. O'Doherty; (2009) The effect of dried distillers grains with solubles in the diet of the growing-finishing pig on performance and nitrogen and phosphorus excretion American Society of Animal Science Meeting, Montreal, Canada [Details]
A.G. Smith, P. Reilly, T. Sweeney, K.M. Pierce, D.A. Gahan, J.J. Callan and J.V. O¿Doherty ; (2009) The effects of β-glucan type and enzyme supplementation on the intestinal microbiota and nutrient digestibility in finisher pigs Proceedings of XI International Symposium on Digestive Physiology of Pigs, Montbrio del Camp, Costa Daurauda, Spain [Details]
J.V. O¿Doherty, P. McDonnell and S. Figat; (2009) The effect of dietary laminarin and fucoidan in the diet of the weanling piglet on performance and selected faecal microbial populations Proceedings of XI International Symposium on Digestive Physiology of Pigs, Montbrio del Camp, Costa Daurauda, Spain [Details]
J.V. O¿ Doherty, S. Dillon, S. Figat, J.J. Callan and T. Sweeney ; (2009) The effects of lactose inclusion and seaweed extract on performance, nutrient digestibility and microbial populations in newly weaned piglets Proceedings of XI International Symposium on Digestive Physiology of Pigs, Montbrio del Camp, Costa Daurauda, Spain [Details]
P.F. Varley, J.J. Callan, and J.V. O¿Doherty ; (2009) Effect of crude protein and phosphorus level in a phytase supplemented grower finisher pig diet on phosphorus and calcium metabolism Proceedings of XI International Symposium on Digestive Physiology of Pigs, Montbrio del Camp, Costa Daurauda, Spain [Details]
P.F. Varley, P.B. Lynch, J.J. Callan, and J.V. O¿Doherty ; (2009) Effect of phytase concentration in a low phosphorus weaner pig diet and its subsequent effect on bone development in the finished pig Proceedings of XI International Symposium on Digestive Physiology of Pigs, Montbrio del Camp, Costa Daurauda, Spain [Details]
P.F. Varley, P.B. Lynch, J.J. Callan, and J.V. O¿Doherty ; (2009) Effect of dietary phosphorus level and phytase inclusion on weaner pig performance and subsequent bone development Proceedings of XI International Symposium on Digestive Physiology of Pigs, Montbrio del Camp, Costa Daurauda, Spain [Details]
Ryan, M.T., Collins, C., O¿Doherty, J.V. and Sweeney, T. ; (2009) Selection of stable endogenous control genes for real-time PCR in TS1 and TS2 challenged porcine gastrointestinal tissues Proceedings of XI International Symposium on Digestive Physiology of Pigs, Montbrio del Camp, Costa Daurauda, Spain [Details]
Ryan, M.T., Smith, A.G., Bahar. B., Reilly P., O¿Doherty J.V. and Sweeney, T. ; (2009) Effects of nutrient supplementation with laminarin derived from Laminaria hyperborea and Laminaria digitata on mucin gene expression in the porcine ileum Proceedings of XI International Symposium on Digestive Physiology of Pigs, Montbrio del Camp, Costa Daurauda, Spain [Details]
S.G. Leonard, T. Sweeney, K.M. Pierce, B. Bahar, B.P. Lynch and J.V. O¿Doherty ; (2009) The effects of maternal dietary supplementation with seaweed extract and fish oil on the humoral immune response and performance of suckling piglets Proceedings of XI International Symposium on Digestive Physiology of Pigs, Montbrio del Camp, Costa Daurauda, Spain [Details]
S.G. Leonard, T. Sweeney, K.M. Pierce, B. Bahar, B.P. Lynch and J.V. O¿Doherty ; (2009) The effects of supplementing the diet of the sow with seaweed extracts and fish oil on aspects of gastrointestinal health and performance of the weaned piglet Proceedings of XI International Symposium on Digestive Physiology of Pigs, Montbrio del Camp, Costa Daurauda, Spain [Details]
O'Shea, C.J., Gahan, D., Lynch, M.B., Callan, J.J. and O'Doherty, J.V. ; (2009) Effect of β-glucan source and exogenous enzyme supplementation on intestinal fermentation and manure odour and ammonia emissions from finisher boars Proceedings of XI International Symposium on Digestive Physiology of Pigs, Montbrio del Camp, Costa Daurauda, Spain [Details]
O'Shea, C.J., Gahan, D., Lynch, M.B., Callan, J.J. and O'Doherty, J.V. 2009; (2009) Effect of supplementation of exogenous β -glucans and enzymes on nutrient digestibility, manure odour and ammonia emissions from finisher boars Proceedings of XI International Symposium on Digestive Physiology of Pigs, Montbrio del Camp, Costa Daurauda, Spain [Details]
P. McDonnell, J. V. O'Doherty; (2009) The effect of dietary laminarin and fucoidan in the diet of the weanling piglet on performance, selected faecal microbial populations and volatile fatty acid concentrations American Society of Animal Science Meeting, Montreal, Canada [Details]
O'Shea, C.J., Lynch, M.B., Callan, J.J. and O'Doherty, J.V.; (2009) Dietary supplementation with chitosan at high and low crude protein concentrations promotes Enterobacteria spp in the caecum and colon and increases manure odour emissions from finisher boars Proceedings of XI International Symposium on Digestive Physiology of Pigs, Montbrio del Camp, Costa Daurauda, Spain [Details]
J.V. O' Doherty; (2008) Processing and enzyme supplementation of cereal grains for pigs Western Canadian nutrition conference [Details]
                                                                                                                 

Research

Research Interests

Improving gut health of the pig by diet

My research programme examines how the various types of non digestible oligosaccharides (NDOs) and lactose sources can influence the microbial population of the gastro-intestinal tract of pigs, as well as piglet growth; nutrient digestibility, utilisation, and excretion; structure and function of the gut; and enteric diseases such as pathogenic E. coli and beneficial lactobacilli and the immune system. It also examines some the interactions between NDOs, enzymes and bacterial cultures on gastro-intestinal health on all of the above. Cellular and molecular mechanisms of action of prebiotics in the gut and the immune system are also been investigated as part of a collaboration programme.  

Reducing environmental impact of pig production

My research focuses on nutritional strategies to reduce odour, ammonia emissions and the excretion of nitrogen and phosphorus in manure. This is done through diet manipulation of crude protein and amino acid profiles, use of complex oligosaccharides (ß-glucans and fucans), use of enzymes (phytase and non starch polysaccharides enzymes), probiotics and different carbohydrate sources.