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Changes in the resistance of the ewe to infection with Teladorsagia circumcincta during late pregnancy and lactation

Published online by Cambridge University Press:  18 August 2016

R.W. McAnulty
Affiliation:
Animal and Food Sciences Division
A.S. Familton
Affiliation:
Animal and Food Sciences Division
R.D. Sedcole
Affiliation:
Applied Computing and Management Division, Lincoln University, PO Box 84, Canterbury, New Zealand
A.R. Sykes*
Affiliation:
Animal and Food Sciences Division
*
Corresponding author.
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Abstract

During each of four periods commencing either 4 weeks before, at, and at 6 and at 12 weeks after parturition four groups of reproductive sheep and one group of non-reproductive sheep (no. = 6 in all cases) were brought indoors with their lambs from pasture. One group of reproductive sheep (PA) was slaughtered to determine worm burdens carried at pasture. At the same time non-reproductive sheep (B) and a group of reproductive sheep (PB) were treated with anthelmintic (day –7) and on day 0 given 20 000 larvae of T. circumcincta and slaughtered on day 21 for the measurement of worm burdens. The remaining two groups of reproductive sheep were maintained indoors: one group (PC) was given 4000 larvae of T. circumcincta per day for 30 days and the final group (PD) uninfected. Both groups were treated with anthelmintic after 50 days and on day 57 given 20 000 larvae of T. circumcincta and slaughtered on day 78 for worm counts. Production data were obtained for sheep in groups PC and PD.

Chronic infection of ewes (PC) was associated with a 0·15 reduction in growth rates of their lambs and an increase in wool tenderness (0·3, P < 0·01). Worm burdens and eggs per g in reproductive sheep outdoors were highest during mid to late lactation which was confirmed by the pattern of change in resistance to challenge infection on removal from pasture. This contrasted with the situation indoors where resistance was least around parturition but was restored within 3 weeks of parturition and was especially evident in the group exposed to larvae during lactation (group PC).

It is argued that the prolonged period of susceptibility of the sheep at pasture could have a nutritional basis, reflecting their much greater body-weight loss during early lactation than in the sheep indoors. The implications of the findings for the management of sheep flocks with reduced chemical inputs are discussed.

Type
Ruminant nutrition, behaviour and production
Copyright
Copyright © British Society of Animal Science 2001

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References

Blitz, N.M. and Gibbs, H.C. 1972. Studies on the arrested development of Haemonchus contortus in sheep. II. Termination of arrested development and the spring rise phenomenon. International Journal for Parasitology 2: 1322.CrossRefGoogle ScholarPubMed
Bown, M.D., Poppi, D.P. and Sykes, A.R. 1991. The effect of post-ruminal infusion of protein or energy on the pathophysiology of Trichostrongylus colubriformis infection and body composition in lambs. Australian Journal of Agricultural Research 42: 253267.Google Scholar
Brunsdon, R.V. 1966. Importance of the ewe as a source of trichostrongyle infection for lambs: control of the spring-rise phenomenon by single post-lambing anthelmintic treatment. New Zealand Veterinary Journal 14: 118125.CrossRefGoogle ScholarPubMed
Brunsdon, R.V. 1970. The spring-rise phenomenon: seasonal changes in the worm burdens of breeding ewes and in the availability of pasture infection. New Zealand Veterinary Journal 18: 4754.Google Scholar
Brunsdon, R.V. and Vlassoff, A. 1971. The post-parturient rise: a comparison of the pattern and relative generic composition of strongyle egg output from lactating and non-lactating ewes. New Zealand Veterinary Journal 19: 1925.Google Scholar
Catchpole, J. and Harris, T.J. 1989. Interaction between coccidia and Nematodirus battus in lambs on pasture. Veterinary Record 124: 603605.Google Scholar
Chapman, R.E. and Wheeler, J.L. 1963. Dyebanding: a technique for fleece growth studies. Australian Journal of Science 26: 5354.Google Scholar
Connan, R.M. 1968a. Studies on the worm populations in the alimentary tract of breeding ewes. Journal of Helminthology 42: 928.Google Scholar
Connan, R.M. 1968b. The post-parturient rise in faecal egg count of ewes, its aetiology and epidemiological significance. World Review of Animal Production 4: 5358.Google Scholar
Coop, R.L. and Holmes, P.H. 1996. Nutrition and parasite interactions. International Journal for Parasitology 26: 951962.Google Scholar
Coop, R.L., Mellor, D.J., Jackson, E., Jackson, F., Flint, D.J. and Vernon, R.G. 1990. Teladorsagia circumcincta egg output at the onset of natural and induced lactation in ewes. Veterinary Parasitology 35: 295305.Google Scholar
Crofton, H.D. 1958. Nematode parasite populations in sheep on lowland farms. Further V. observations on the post-parturient rise and a discussion of its significance. Parasitology 48: 242250.Google Scholar
Donaldson, J., Houtert, M.F.J. van and Sykes, A.R. 1998. The effect nutrition on the periparturient parasite status of mature ewes. Animal Science 67: 523533.Google Scholar
Donaldson, J., van Houtert, M.F. J. and Sykes, A.R. 2001. The effect of dietary fish-meal supplementation on parasite burdens of periparturient sheep. Animal Science 72: 149158.Google Scholar
Dunsmore, J.D. 1961. Ostertagia spp in lambs and pregnant ewes. Journal of Helminthology 39: 159184.Google Scholar
Familton, A.S., McAnulty, RW. 1996. Some challenges to current understanding of nematode epidemiology from Canterbury. Proceedings of the 26th seminar of the Sheep and Beef Cattle Society of the New Zealand Veterinary Association pp. 7381 Google Scholar
Familton, A.S., McAnulty, R.W. and Nicol, A.M. 1986. Epidemiology of internal parasitism of sheep on irrigated pasture and the possible control measures. Proceedings of the 16th Seminar of the Sheep and Beef Cattle Society of the New Zealand Veterinary Association pp. 210219.Google Scholar
Field, A.C., Brambell, M.R. and Campbell, J.A. 1960. Spring rise in faecal worm-egg counts of housed sheep and its importance in nutritional experiments. Parasitology 50: 387399.CrossRefGoogle ScholarPubMed
Ford, G.E. 1976. Blood pepsinogen estimations and production responses in trichostrongylid parasitism of ruminants. In Pathophysiology of parasitic infection (ed. Soulsby, E.J.L.), World Association for the Advancement of Veterinary Parasitology, pp. 8397. Academic Press, New York.Google Scholar
Geenty, K.G. and Sykes, A.R. 1986. Effect of herbage allowance during pregnancy and lactation on feed intake, milk production, body composition and energy utilization of ewes at pasture. Journal of Agricultural Science, Cambridge 106: 351367.CrossRefGoogle Scholar
Gibbs, H.C. 1968. Some factors involved in the “spring rise” phenomenon in sheep. In The reaction of the host to parasitism (ed. Soulsby, E.J.L.), pp. 160173. Elwert, N.G. Universities und Verlagsbuchand, Marburg/Lahn.Google Scholar
Gibbs, H.C. and Barger, I.A. 1986. Haemonchus contortus and other trichostrongylid infections in parturient, lactating and dry ewes. Veterinary Parasitology 22: 5766.Google Scholar
Harvey, W.R. 1985. User’s guide for LSMLMW. Ohio State University, USA.Google Scholar
Herlich, H. 1956. A digestion method for post-mortem recovery of nematodes from ruminants. Proceedings of the Helminthological Society, Washington 23: 102103.Google Scholar
Houtert, M.F.J. van and Sykes, A.R. 1996. Invited review: implications of nutrition for the ability of ruminants to withstand gastrointestinal nematode infections. International Journal for Parasitology 26: 11511168.Google Scholar
Jackson, F., Jackson, E. and Williams, J.T. 1988. Susceptibility of the pre-parturient ewe to infection with Trichostrongylus vitrinus and Ostertagia circumcincta . Research in Veterinary Science 45: 213218.Google Scholar
Jeffcoate, I.A., Fishwick, G., Bairden, K., Armour, J. and Holmes, P.H. 1990. Pathophysiology of the periparturient egg rise in sheep: the role of prolactin. Research in Veterinary Science 48: 295300.Google Scholar
Leyva, V.,Henderson, A.E. and Sykes, A.R. 1982. Effect of daily infection with Ostertagia circumcincta larvae on food intake, milk production, and wool growth in sheep. Journal of Agricultural Science, Cambridge 99: 249259.Google Scholar
Lloyd, S. 1982. Effect of pregnancy and lactation upon infection. In Advances in veterinary immunology developments in animal and veterinary sciences 12 (ed. Kristtensen, F. and Antczak, D.F.), pp. 153176. Elsevier, Amsterdam.Google Scholar
Ministry of Agriculture and Fisheries. 1973. Parasitology manual. Wallaceville, New Zealand.Google Scholar
O’Sullivan, B.M. and Donald, A.D. 1970. A field study of nematode parasite populations in the lactating ewe. Parasitology 61: 301315.Google Scholar
O’Sullivan, B.M. and Donald, A.D. 1973. Responses to infection with Haemonchus contortus and Trichostrongylus colubriformis in ewes of different reproductive status. International Journal for Parasitology 3: 521530.Google Scholar
Peart, J.N. 1970. Some effects of live weight and body condition on milk production of Blackface ewes. Journal of Agricultural Science, Cambridge 70: 331338.Google Scholar
Reid, J.F.S. and Armour, J. 1975. Seasonal fluctuations in the gastro-intestinal nematode populations of Scottish hill sheep. Research in Veterinary Science 18: 307313.Google Scholar
Robertson, T.G. and Elliott, D.C. 1966. The laboratory assessment of worm parasite populations in sheep. New Zealand Journal of Agricultural Research 9: 350358.CrossRefGoogle Scholar
Ross, D.A. 1960. Staple strength.I. The measurement of staple strength. New Zealand Journal of Agricultural Research 3: 503525.Google Scholar
Ross, D.A. and Miekle, H.E. 1985. The processing significance of variations in staple strength within and between fleeces. Proceedings of the seventh international wool textile research conference, Tokyo, vol. 2, pp. 4554.Google Scholar
Rowell, R.G. and Walters, D.E. 1978. Analysing data with repeated observations on each experimental unit. Journal of Agricultural Science, Cambridge 87: 423432.Google Scholar
Salisbury, J.R. and Arundel, J.H. 1970. Peri-parturient deposition of nematode eggs by ewes and residual pasture contamination as sources of infection for lambs. Australian Veterinary Journal 46: 523529.CrossRefGoogle ScholarPubMed
Threlkeld, W.L. 1934. The life history of Ostertagia circumcincta . Virginia Agricultural Research Station technical bulletin no. 52, pp. 124.Google Scholar
Vlassoff, A. 1976. Seasonal incidence of infective trichostrongyle larvae on pasture grazed by lambs: the contribution of the ewe and the role of residual pasture infestation as a source of infection to the lamb. New Zealand Journal of Experimental Agriculture 4: 281284.Google Scholar
Wallace, D.S., Bairden, K., Dunn, 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 daily supplementation with urea on resilience and resistance to infection with Haemonchus contortus. Parasitology 116: 6772.Google Scholar