Nematode burdens and immunological responses following natural challenge in Romney lambs selectively bred for low or high faecal worm egg count

Veterinary Parasitology

Volumn 61, Issue 3-4, 1996, Pages 249-263

  Bisset, S A ^a   Vlassoff, A ^a   Douch, P G C ^a   Jonas, W E ^a   West, C J ^a   Green, R S ^a  

^a AGRESEARCH   (New Zealand)

Author keywords

Immunity Nematoda; Resistance; Selective breeding genetics; Sheep Nematoda

Indexed keywords

ANIMAL EXPERIMENT; ANIMAL TISSUE; ARTICLE; BLOOD ANALYSIS; CELL COUNT; FECES ANALYSIS; GENOTYPE; IMMUNE RESPONSE; INFECTION RATE; MALE; NEMATODE; NONHUMAN; SEASONAL VARIATION; SHEEP;

ANIMALIA; COOPERIA CURTICEI; HAEMONCHUS CONTORTUS; NEMATODA; NEMATODIRUS SPATHIGER; OSTERTAGIA; OVIS ARIES; SPATHIGER; TELADORSAGIA CIRCUMCINCTA; TRICHOSTRONGYLE; TRICHOSTRONGYLUS COLUBRIFORMIS; TRICHOSTRONGYLUS VITRINUS;

EID: 0030070244     PISSN: 03044017     EISSN: None     Source Type: Journal    
DOI: 10.1016/0304-4017(95)00836-5     Document Type: Article

References (24)

1. Baker, R.L., Watson, T.G., Bisset, S.A. and Vlassoff, A., 1990. Breeding Romney sheep which are resistant to gastro-intestinal parasites. Proc. Aust. Assoc. Anim. Breed. Genetics, 8: 173-178.
2. Bisset, S.A., Vlassoff, A. and West, C.J., 1991. Breeding sheep for resistance/tolerance to internal parasites. In: Practical Aspects of Internal Parasite Control. Proceedings of the 21st Seminar of the Sheep and Beef Cattle Society New Zealand Veterinary Association, Lincoln University, July 1991. Publication No. 134. Veterinary Continuing Education, Massey University, Palmerston North, pp. 83-91.
3. Bisset, S.A., Vlassoff, A., Morris, C.A., Southey, B.R. and Baker, R.L., 1992. Heritability of and genetic correlations among faecal egg counts and productivity traits in Romney sheep. NZ J. Agric. Res., 35: 51-58.
4. Brunsdon, R.V., 1972. Inhibited development of Ostertagia spp. and Cooperia spp. in naturally acquired infections in calves. NZ Vet. J., 20: 183-189.
5. Buddle, B.M., Jowett, G., Green, R.S., Douch, P.G.C. and Risdon, P.L., 1992. Association of blood eosinophilia with the expression of resistance in Romney lambs to nematodes. Int. J. Parasitol., 22: 955-960.
6. Dawkins, H.J.S., Windon, R.G. and Eagleston, G.K., 1989. Eosinophil responses in sheep selected for high and low responsiveness to Trichostrongylus colubriformis. Int. J. Parasitol., 19: 199-205.
7. Dineen, J.K. and Windon, R.G., 1980. The effect of acquired resistance on adult worms of Trichostrongylus colubriformis in lambs. Int. J. Parasitol., 10: 249-252.
8. Douch, P.G.C. and Morum, P.E., 1993. The effect of age on the response of Romney sheep to gastrointestinal nematodes during grazing. Int. J. Parasitol., 23: 651-655.
9. Douch, P.G.C., Harrison, G.B.L., Buchanan, L.L. and Brunsdon, R.V., 1984. Relationship of histamine in tissues and antiparasitic substances in gastrointestinal mucus to the development of resistance to trichostrongyle infections in young sheep. Vet. Parasitol., 16: 273-288.
10. Douch, P.G.C., Harrison, G.B.L., Elliott, D.C., Buchanan, L.L. and Greer, K.S., 1988. Relationship of nematode cholinesterase activity and nematode burdens to the development of resistance to trichostrongyle infections in sheep. Vet. Parasitol., 27: 291-308.
11. Douch, P.G.C., Green, R.S. and Risdon, P.L., 1994. Antibody responses of sheep to challenge with Trichostrongylus colubriformis and the effect of dexamethasone treatment. Int. J. Parasitol., 24: 921-928.
12. Douch, P.G.C., Green, R.S., Morris, C.A., Bisset, S.A., Vlassoff, A., Baker, R.L., Watson, T.G., Hurford, A.P. and Wheeler, M., 1995. Genetic and phenotypic relationships among anti-Trichostrongylus colubriformis antibody level, faecal egg count and body weight traits in grazing Romney sheep. Livestock Prod. Sci., 41: 121-132.
13. Gibson, T.E. and Parfitt, J.W., 1972. The effect of age on development by sheep of resistance to Trichostrongylus colubriformis. Res. Vet. Sci., 13: 529-535.
14. Gibson, T.E. and Parfitt, J.W., 1973. The development of resistance to Trichostrongylus colubriformis by lambs under conditions of continuous infection. Res. Vet. Sci., 15: 220-223.
15. Gruner, L., 1991. Overview of genetic basis of resistance to endoparasites in small ruminants. In: Resistance to Endoparasites in Small Ruminants. Proceedings of the Research Planning Workshop held at ILCA, Addis Ababa, Ethiopia, 5-7 February 1991. International Livestock Centre for Africa (ILCA), Addis Ababa, Ethiopia, pp. 5-10.
16. Larsen, J.W.A., Anderson, N., Vizard, A.L., Anderson, G.A., Hoste, H., 1994. Diarrhoea in Merino ewes during winter: association with trichostrongylid larvae. Aust. Vet. J., 71: 365-372.
17. McKenna, P.B., 1981. The diagnostic value and interpretation of faecal egg counts in sheep. NZ Vet. J., 29: 129-132.
18. Morris, C.A., Watson, T.G., Bisset, S.A., Vlassoff, A., Douch, P.G.C., 1995. Breeding sheep in New Zealand for resistance or resilience to nematode parasites. In: G.D. Gray, R.R. Woolaston and B.T. Eaton (Editors), Breeding for Resistance to Infectious Diseases of Small Ruminants. Australian Centre for Agricultural Research, in press.
19. Stankiewicz, M., Jonas, W.A., Douch, P.G.C., Rabel, B., Bisset, S.A. and Cabaj, W., 1993. Globule leucocytes in the lumen of the small intestine and the resistance status of sheep infected with parasitic nematodes. J. Parasitol., 79: 940-945.
20. Vlassoff, A. and McKenna, P.B., 1994. Nematode parasites of economic importance in sheep in New Zealand. NZ J. Zool., 21: 1-8.
21. Watson, T.G., Baker, R.L., Hosking, B.C., Hurford, A.P., 1989. Progress in genetic selection for high or low nematode faecal egg count in Romney sheep. 31st Conference. Australian Society for Parasitology, Magnetic Island, 26-29 September 1989, Programme and Abstracts, p. 75.
22. Williamson, J.F., Blair, H.T., Garrick, D.J., Pomroy, W.E., Douch, P.G.C., 1994. The relationship between internal parasite burden, faecal egg count, and mucosal mast cells in fleeceweight-selected and control sheep. Proc. NZ Soc. Anim. Prod., 54: 9-13.
23. Windon, R.G., 1991. Genetic control of host responses involved in resistance to gastrointestinal nematodes of sheep. In: Owen, J.B. and Axeford, R.F.E. (Editors), Breeding for Disease Resistance in Farm Animals. C.A.B. International, Wallingford, UK, pp. 162-186.
24. Windon, R.G., Dineen, J.K. and Wagland, B.M., 1987. Genetic control of immunological responsiveness against the intestinal nematode Trichostrongylus colubriformis in lambs. In: B.J. McGuirk (Editor), Merino Improvement Programmes in Australia. Australia Wool Corporation, Melbourne, pp. 371-375.