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The influence of increased feeding on the susceptibility of sheep to infection with Haemonchus contortus

Published online by Cambridge University Press:  18 August 2016

D.S. Wallace ,
K. Bairden ,
J.L. Duncan ,
P.D. Eckersall ,
G. Fishwick ,
P.H. Holmes ,
Q.A. McKellar ,
S. Mitchell ,
M. Murray  and
J.J. Parkins
...Show all authors
D.S. Wallace*
Affiliation:
Glasgow University Veterinary School, Bearsden Road, Glasgow G61 1QH
K. Bairden
Affiliation:
Glasgow University Veterinary School, Bearsden Road, Glasgow G61 1QH
J.L. Duncan
Affiliation:
Glasgow University Veterinary School, Bearsden Road, Glasgow G61 1QH
P.D. Eckersall
Affiliation:
Glasgow University Veterinary School, Bearsden Road, Glasgow G61 1QH
G. Fishwick
Affiliation:
Glasgow University Veterinary School, Bearsden Road, Glasgow G61 1QH
P.H. Holmes
Affiliation:
Glasgow University Veterinary School, Bearsden Road, Glasgow G61 1QH
Q.A. McKellar
Affiliation:
Glasgow University Veterinary School, Bearsden Road, Glasgow G61 1QH
S. Mitchell
Affiliation:
Glasgow University Veterinary School, Bearsden Road, Glasgow G61 1QH
M. Murray
Affiliation:
Glasgow University Veterinary School, Bearsden Road, Glasgow G61 1QH
J.J. Parkins
Affiliation:
Glasgow University Veterinary School, Bearsden Road, Glasgow G61 1QH
M.J. Stear
Affiliation:
Glasgow University Veterinary School, Bearsden Road, Glasgow G61 1QH
*
†Corresponding author, present address: Department of Biochemistry and Nutrition, SAC, Auchincruive, Ayr KA6 5HW.
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Abstract

Previous research has shown that supplementing the diet of growing lambs with urea enhances their ability to withstand gastrointestinal infection with the nematode Haemonchus contortus. This study compared lambs given two different amounts (χ 1 and χ 1·5) of the same urea-supplemented diet. One dietary allowance was sufficient to allow uninfected lambs to gain approximately 400 g/week without adverse clinical signs. In contrast half of the H. contortus infected lambs on this dietary allowance had to be humanely killed before the end of the experiment due to severe anaemia and anorexia. All infected lambs on this dietary allowance showed decreased mean red cell volumes and decreased plasma albumin concentrations indicating inadequate replacement of red blood cells and plasma proteins lost during the infection. The remaining lambs were offered proportionately 0·5 more of the same dietary allowance. Among lambs on this dietary allowance, there were very few differences between uninfected and infected sheep in clinical signs and growth rate. Therefore, dietary allowances that are adequate for uninfected lambs are not necessarily sufficient for infected lambs. As nearly all grazing lambs are infected with nematodes, dietary recommendations should take parasitic infection and its nutritional demands into account.

Keywords

dietary proteinHaemonchus contortusimmunitysheep
Type
Research Article
Information
Animal Science , Volume 69 , Issue 2 , October 1999 , pp. 457 - 463
Copyright
Copyright © British Society of Animal Science 1999

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References

Abbott, E. M., Parkins, J. J. and Holmes, P. H. 1985. Influence of dietary protein on parasite establishment and pathogenesis in Finn Dorset and Scottish Blackface lambs given a single moderate infection of Haemonchus contortus. Research in Veterinary Science 38: 6–13.CrossRefGoogle Scholar
Agricultural and Food Research Council. 1993. Energy and protein requirements in ruminants. An advisory manual prepared by the AFRC Technical Committee on Responses to Nutrients. CAB International, Wallingford.Google Scholar
Albers, G. A. A., Gray, G. D., Piper, L. R., Barker, J. S. F., Le Jambre, L. F. and Barger, I. A. 1987. Genetics of resistance and resilience to Haemonchus contortus infection in young Merino sheep. International Journal for Parasitology 17: 1355–1363.CrossRefGoogle ScholarPubMed
Armour, J., Jarrett, W. F. H. and Jennings, F. W. 1966. Experimental Ostertagia circumcincta infections in sheep: development and pathogenesis of a single infection. American journal of Veterinary Research 27: 1267–1278.Google Scholar
Bishop, S.C., Bairden, K., McKellar, Q. A., Park, M. and Stear, M. J. 1996. Genetic parameters for faecal egg count following mixed, natural, predominantly Ostertagia circumcincta infection and relationships with live weight in young lambs. Animal Science 63: 423–428.CrossRefGoogle Scholar
Bouix, J., Krupinski, J., Rzepecki, R., Nowosad, B., Skrzyzala, I., Roborzynski, M., Fudalewicz-Niemczyk, W., Skalska, M., Malczewski, A. and Gruner, L. 1998. Genetic resistance to gastrointestinal nematode parasites in Polish long-wool sheep. International Journal for Parasitology 28: 1791–1804.CrossRefGoogle ScholarPubMed
Bown, M. D., Poppi, D. P. and Sykes, A. R. 1991. Nitrogen transactions along the digestive tract of lambs concurrently infected with Trichostrongylus colubriformis and Ostertagia circumcincta. British Journal of Nutrition 66: 237–249.CrossRefGoogle ScholarPubMed
Coop, R. L., Graham, R.B., Jackson, F., Wright, S. E. and Angus, K. W. 1985. Effect of experimental Ostertagia circumcincta infection on the performance of grazing lambs. Research in Veterinary Science 38: 282–287.CrossRefGoogle ScholarPubMed
Coop, R. L. and Holmes, P. H. 1996. Nutrition and parasite interaction. International Journal for Parasitology 26: 951–962.CrossRefGoogle ScholarPubMed
Coop, R. L., Sykes, A. R. and Angus, K. W. 1982. The effect of three levels of Ostertagia circumcincta larvae on growth rate, food intake and body composition of growing lambs. Journal of Agricultural Science, Cambridge 98: 247–255.CrossRefGoogle Scholar
Eady, S.J. 1998. Worm resistance in a Merino breeding objective — influence of genetic correlations between resistance and production traits. Proceedings of the sixth world congress on genetics applied to livestock production, Annidale, vol. 27, pp. 141–144.Google Scholar
Gordon, H.McL. 1964. Studies on resistance to Trichostrongylus colubriformis in sheep. Influence of a quantitative reduction in the ration. Australian Veterinary Journal 40: 55–61.CrossRefGoogle Scholar
Gordon, H.McL. and Whitlock, H. V. 1939. A new technique for counting nematode eggs in sheep faeces. Journal of the Council for Scientific and Industrial Research in Australia 12: 50–52.Google Scholar
Kambara, T., McFarlane, R. G., Abell, T. J., McAnulty, R. W. and Sykes, A. R. 1993. The effect of age and dietary protein on immunity and resistance in lambs vaccinated with Trichostrongylus colubriformis. International Journal for Parasitology 23: 471–476.CrossRefGoogle ScholarPubMed
Ministry of Agriculture, Fisheries and Food/Agricultural Development and Advisory Service. 1981. The analysis of agricultural materials. 2nd RB427. Her Majesty’s Stationery Office, London.Google Scholar
Morris, C. A., Vlassoff, A., Bisset, S. A., Baker, R. L., West, C. J. and Hurford, A. P. 1997. Responses of Romney sheep to selection for resistance or susceptibility to nematode infection. Animal Science 64: 319–329.CrossRefGoogle Scholar
Stear, M. J., Bairden, K., Bishop, S.C., Buitkamp, J., Duncan, J. L., Gettinby, G., McKellar, Q. A., Park, M., Parkins, J. J., Reid, S. W. J., Strain, S. and Murray, M. 1997. The genetic basis of resistance to Ostertagia circumcincta in lambs. Veterinary Journal 154: 111–119.CrossRefGoogle ScholarPubMed
Stear, M. J. and Murray, M. 1994. Genetic resistance to parasitic disease: particularly of ruminants to gastrointestinal nematodes. Veterinary Parasitology 54: 161–176.CrossRefGoogle ScholarPubMed
Stear, M. J., Park, M. and Bishop, S. C 1996. The key components of resistance to Ostertagia circumcincta in lambs. Parasitology Today 12: 438–441.CrossRefGoogle ScholarPubMed
Wallace, D. S., Bairden, K., Duncan, J. L., Eckersall, P. D., Fishwick, G., Gill, M., Holmes, P. H., McKellar, Q. A., Murray, M., Parkins, J. J. and Stear, M. J. 1998. The influence of dietary supplementation with urea on resilience and resistance to infection with Haemonchus contortus. Parasitology 116: 67–72.CrossRefGoogle ScholarPubMed
Wallace, D.S., Bairden, K., Duncan, J.L., Fishwick, G., Gill, M., Holmes, P. H., McKellar, Q. A., Murray, M., Parkins, J. J. and Stear, M. J. 1995. Influence of supplementation with dietary soyabean meal on resistance to haemonchosis in Hampshire Down lambs. Research in Veterinary Science 58: 232–237.CrossRefGoogle ScholarPubMed
Wallace, D.S., Bairden, K., Duncan, J. L., Fishwick, G., Gill, M., Holmes, P. H., McKellar, Q. A., Murray, M., Parkins, J. J. and Stear, M. J. 1996. Influence of soyabean supplementation on the resistance of Scottish Blackface lambs to haemonchosis. Research in Veterinary Science 60: 138–143.CrossRefGoogle ScholarPubMed