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Effects of Trypanosoma vivax infection during pregnancy on feed intake, nitrogen retention and liveweight changes in West African Dwarf ewes

Published online by Cambridge University Press:  27 March 2009

O. O. Akinbamijo ,
L. Reynolds  and
G. Gort
O. O. Akinbamijo
Affiliation:
International Livestock Centre for Africa (ILCA), PO Box 5320, lbadan, Nigeria
L. Reynolds
Affiliation:
International Livestock Centre for Africa (ILCA), PO Box 5320, lbadan, Nigeria
G. Gort
Affiliation:
International Livestock Centre for Africa (ILCA), PO Box 5320, lbadan, Nigeria
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Summary

The effects of infection with T. vivax in mid- or late pregnancy on food intake and utilization, liveweight changes, abortion rate and lamb growth rate were investigated in West African Dwarf ewes at lbadan, Nigeria in 1990. Rate of liveweight gain by ewes infected during mid-pregnancy (IMH) was16 g/day compared with 33 and 37 g/day for the uninfected ewes offered medium (CM) or high (CH) plane diets. Although digestibility coefficients were not affected, intake of digestible organic matter was higher in CH ewes than in IMH and CM ewes. Nitrogen retention at mid-pregnancy on a metabolic size basis was higher in CH ewes than in CM and IMH ewes.

Lamb birth weight and survival rate were lower in infected ewes. Ewes infected in mid-pregnancy (IMH) and in late pregnancy (ILH) had mean birth weights of 1·4 and 1·0 kg compared with CM and CH ewes, which had mean birth weights of 1·9 and 2·0 kg respectively. Observed survival rates were 63, 15, 75 and 80% for lambs nursed by IMH, ILH, CM and CH ewes respectively. During the first 6 weeks postpartum, lamb growth rate in all groups did not differ. However, during weeks 7–12 postpartum, lambs nursed by IMH ewes had significantly lower growth rates. Weaning weight was also lower in lambs from IMH (5·0 kg) dams than in lambs from CM and CH dams (7·1 kg). Infection during late pregnancy was more severe and all infected ewes lost weight due to reduced feed intake and fever. T. vivax infection in sheep is responsible for reproductive wastage, abortion, poor lamb growth and ewe mortality.

Type
Animals
Information
The Journal of Agricultural Science , Volume 123 , Issue 3 , December 1994 , pp. 379 - 385
Copyright
Copyright © Cambridge University Press 1994

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References

Adu, I. F., Olaloku, E. A. & Oyenuga, V. A. (1974). The effects of energy intake during late pregnancy on lamb birth weight and lactation of Nigerian Dwarf sheep. Nigerian Journal of Animal Production 1, 151–161.Google Scholar
Agricultural Research Council (1980). The Nutrient Requirements of Ruminant Liverstock. Farnham Royal: Commonwealth Agricultural Bureaux.Google Scholar
Akinbamijo, O. O. (1988). The effect of trypanosomiasis on feed utilization by West African Dwarf goals. M. Sc thesis, Obafemi Awolowo University, Nigeria.Google Scholar
Akinbamijo, O. O., Ademosun, A. A., Brouwer, B. O., Tolkamp, B. J. & Zwart, D. (1990). Effect of Trypanosoma brucei infection on liveweight, organic matter intake, digestibility and N-balance in West African Dwarf goats. Tropical Veterinarian 8, 140–148.Google Scholar
Akinbamijo, O. O., Hamminga, B. J., Wensing, T., Brouwer, B. O., Tolkamp, B. J. & Zwart, D. (1992). The effect of T. vivaxinfection in West African Dwarf goats on energy and nitrogen metabolism. Veterinary Quarterly 15, 95–100.CrossRefGoogle Scholar
Akinbamijo, O. O., Reynolds, L., Sherington, J. & Nsahlai, I. V. (1994). Effects of postpartum Trypanosoma vivax infection on feed intake, liveweight changes, milk yield and composition in West African Dwarf ewes and associated lamb growth rates. Journal of Agricultural Science, Cambridge 123, 387–392.CrossRefGoogle Scholar
Anosa, V. O. & Isoun, T. T. (1980). Haematological studies on Trypanosoma vivax infections of goats and intact and splenectomized sheep. Journal of Comparative Pathology 90, 155–168.CrossRefGoogle ScholarPubMed
Association of Official Analytical Chemists (1975). Official Methods of Analysis, 12th edn.Washington DC: AOAC.Google Scholar
Blaxter, K. L. (1989). Energy Metabolism in Animals and Man. Cambridge: Cambridge University Press.Google Scholar
Elhassan, E. O. (1987). Pathophysiology of female reproduction in sheep experimentally infected with Trypanosoma vivax. Ph D thesis. University of Ibadan, Nigeria.Google Scholar
Gunn, R. G. (1983). The influence of nutrition on reproductive performance of ewes. In Sheep Production (Ed. Haresign, W.), pp. 99–110. London: Butterworths.Google Scholar
Ikede, B. O. & Losos, G. J. (1972). Hereditary transmission of Trypanosoma vivax in sheep. British Veterinary Journal 128, 1–11.Google ScholarPubMed
Ikede, B. O., Elhassan, E. & Akpavie, S. O. (1988). Reproductive disorders in African trypanosomiasis. A review. Acta Tropica 45, 5–10.Google ScholarPubMed
International Livestock Centre for Africa (1986). Trypanotolerance Network: Situation report: December 1985. Addis Ababa, Ethiopia: ILCA.Google Scholar
Katende, J. M., Musoke, A. J., Nantulya, V. M. & Goedreis, B. M. (1987). A new method for fixation and preservation of trypanosomal antigens for use in the indirect immunofluorescent antibody test for diagnosis of bovine trypanosomiasis. Tropical Medicine and Parasitology 38, 41–44.Google ScholarPubMed
Murray, M., Trail, J. C. M., Turner, D. A. & Wissocq, Y. (1983). Livestock Productivity and Trypanotolerance: Network Training Manual. Addis Ababa: International Livestock Centre for Africa.Google Scholar
Ogwu, D., Njoku, C. O. &Osori, D. I. K. (1986). Effects of experimental Trypanosoma vivax infection on first-, second-, and third-trimester pregnancy in heifers. Theriogenology 25, 383–398.CrossRefGoogle ScholarPubMed
Orji, B. L. & Steinbach, J. (1980). Gestation period and weight changes during pregnancy in the Nigerian Dwarf Sheep. Bulletin of Animal Health and Production in Africa 28, 356–364.Google Scholar
Reynolds, L. & Ekwuruke, J. O. (1988). The effect of Trypanosoma vivax on West African Dwarf Sheep at two planes of nutrition. Small Ruminant Research 1, 175–188.CrossRefGoogle Scholar
Verstegen, M. W. A., Zwart, D., van der Hel, W., Brouwer, B. O. & Wensing, T. (1991). Effect of Trypanosoma vivaxinfection on energy and nitrogen metabolism of West African Dwarf Goats. Journal of Animal Science 69, 1667–1677.CrossRefGoogle Scholar
Zwart, D., Brouwer, B. O., van der Hel, W., van den Akker, H. N. & Verstegen, M. W. A. (1991). Effect of Trypanosoma vivax infection on body temperature, feed intake, and metabolic rate of West African Dwarf Goats. Journal of Animal Science 69, 3780–3788.CrossRefGoogle ScholarPubMed