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The metabolizable protein requirement of the parasitized, lactating ewe

Published online by Cambridge University Press:  20 November 2017

J. G. M. Houdijk ,
I. Kyriazakis ,
F. Jackson  and
R.L. Coop
J. G. M. Houdijk
Affiliation:
Animal Nutrition and Health Department, Scottish Agricultural College, West Mains Road, Edinburgh EH9 3JG, UK
I. Kyriazakis
Affiliation:
Animal Nutrition and Health Department, Scottish Agricultural College, West Mains Road, Edinburgh EH9 3JG, UK
F. Jackson
Affiliation:
Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik EH26 0PZ, UK
R.L. Coop
Affiliation:
Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik EH26 0PZ, UK
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Extract

It has been suggested that periparturient breakdown of immunity to parasites (BIP) has a nutritional basis (Coop and Kyriazakis, 1999). In support of this hypothesis, recent studies have shown that an increased supply of metabolizable protein (MP) reduces the magnitude of periparturient BIP in sheep (Houdijk et al., 2001). Improved MP supply to ewes, infected with gastrointestinal nematodes, has been associated with reduced nematode egg excretion and smaller worm burdens. These immunity indicators may differ in their sensitivity to changes in MP supply. This hypothesis has been addressed in the current doses-response experiment, which also allowed us to estimate the MP requirements of parasitized, lactating, twin-rearing ewes. The latter can be expected to be larger than those of non-parasitized ewes, due to MP requirements for mounting an immune response and for replenishing protein losses.

Type
Theatre Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2002 , 2002 , pp. 74
Copyright
Copyright © The British Society of Animal Science 2002

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References

AFRC, 1993. Energy and Protein Requirements of Ruminants. CAB International, Wallingford.Google Scholar
Coop, R.L. and Kyriazakis, I., 1999. Nutrition-parasite interaction. Veterinary Parasitology 84: 187–204.Google Scholar
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