Abstract
The objective of this study was to assess the reproductive performance of Rwandan cattle and determine the effects of husbandry practices on reproduction. One hundred and fifty Ankole and Crossbreed cattle from 87 farms, were body condition scored (BCS) on a scale of 1(lean) to 5 (fat), and examined rectally for pregnancy and ovary size and structures present. Questionnaires were completed by the farmers to obtain information on husbandry and management practices. The mean age of onset of puberty was 27.7 ± 10.4 months, the interval from parturition to first oestrus was 8.7 ± 7.8 months, calving index was 16.8 ± 5.2 months and 44% (95% CL 0.36-0.52) of cows examined rectally were anoestrus. Crossbred cattle reached puberty younger than Ankole cattle, 23.4 ± 10.4 and 28.4 ± 9.6 months respectively (p < 0.05; t = 1.944; df = 121). Cows in poor BCS (< 2.5) are 1.67 times as likely to be in anoestrus as those with higher BCS (≥ 2.5) (χ2 = 9.476; df = 2; p < 0.01). Increased weaning age resulted in increased calving index (p < 0.001; t = −3.60; df = 38). Reproductive performance of Rwandan cattle is poor. Many of the problems can be attributed to husbandry practices and lack of experience and training in raising cattle.
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References
Azage Tegegne, K.W., Entwistle, E., & Mukasa-Mugerwa., 1993. Plasma progesterone and blood and blood metabolite profiles in post-partum Small East African zebu cows. Tropical Animal Health and Production 25:101–110.
Baruselli, P.S., Reis, E.L., Marques, M.O., Nasser, L.F., & Bo, G.A., 2004. The use of hormonal treatments to improve reproductive performance of anoestrus beef cattle in tropical climates. Animal Reproductive Science 82–83:479–86.
Butler W.R., Everett, R.W., Coppock, C.E., 1981. The relationship between energy balance, milk production and ovulation in postpartum Holstein cows. Journal of Animal Science 53:742–8.
Diskin, M. G., Sreenan J. M., ,2000. Expression and detection of oestrus in cattle. Reproductive Nutritional Development. 40(5):481–91.
Draincourt M.A., Thatcher, W.W., Terqui, M., & Andrieu, D., 1991. Dynamics of ovarian follicular development in cattle during the oestrus cycle, early pregnancy and in response to PMSG. Domestic Animal Endocrinology 8(2): 209–21.
FAO , 2006. Representation in Rwanda. Fodder trees and shrubs in range and farm systems in tropical humid Africa.
Ferguson, 1996. Implementation of Body condition scoring program for dairy herds Pennsylvania Conference.
Hanzen, C., 1986. Endocrine regulation of postpartum ovarian activity in cattle: a review. Reproductive Nutritional Development 26(6):1219–39.
Jolly P. D., McDougall, S., Fitzpatrick, L. A., Macmillan, K. L. & Entwistle, K. W., 1995. Physiological effect of under nutrition on post partum anoestrus in cows. Journal Reproductive Fertility 49:477–492
Lyimo Z. C., Nkya, R., Schoonman, L. & van Eerdenburg, F. J. C. M., 2004. Postpartum reproductive performance of crossbred dairy cattle on smallholder farms in sub-humid coastal Tanzania. Tropical Animal Health and Production 36:269–279.
McDougall S., Burke, C.R., MacMillan, K.L., & Williamson, N.B., 1995. Patterns of follicular development during periods of an ovulation in pasture fed dairy cows after calving. Research ins Veterinary Science 58:212–6.
Montiel F., Ahuja, C., 2005. Body condition score and suckling as factors influencing the duration of post partum anoestrus in cattle: review. Animal Reproductive Science 85(1–2):1–26.
Msanga Y. N., & Bryant, M. J., 2004. Productivity of Crossbred dairy cows suckling their calves for 12 or 24 weeks post calving. Tropical Animal health and production. 36:763–773.
Nogueira G. P., 2004. Puberty in South American Bos indicus (Zebu) cattle. Animal Reproductive Science 82:361–372.
Ogle, B., 1990. Suggestions for intensive livestock-based small holder systems in semi-arid areas of Tanzania. Livestock Research for Rural Development. 2(1)
Opsomer G, Mijten, P., Coryn, M., & de Kruif, A., 1996. Post-partum anoestrus in dairy cattle: a review. Vet Q. 18:68–75.
Savio J.D., Boland, M.P., Hynes, N., & Roche J.F., 1990a. Resumption of follicular activity in the early post-partum period of dairy cows. Journal Reproductive Fertility 88:569–79.
Savio J.D., Boland, M.P., & Roche, J.F., 1990b. Development of dominant follicles ad length of ovarian cycles in post-partum dairy cows. Journal Reproductive Fertility 88(2):581–91.
Schillo K. K., 1992. Effects of dietary energy on control of Lutenising Hormone Secretion in cattle and sheep. Journal Animal Science 70:1271–1282.
Shiferaw Y., Tenagen, B. A., Bekane, M., & Kassa, T., 2005. Reproductive disorders in Highlands of Ethiopia and their effects on reproductive performance. Tropical Animal Health and Production 37:427–42.
Stagg K., Spicer, L. J., Sreenan, J. M., Roche, J. F. & Diskin, M. G., 1998. Effect of calf isolation on follicular wave dynamics, gonadotrophin and metabolic changes and interval to first ovulation in beef cows fed either of two energy levels post partum. Biology of Reproduction 59:777–783.
Tropical Forages., 2006. www.tropicalforages.info/key/forages/Media?htm/Penniswtum_cladestinum.htm
Van Eerdenburg, F. J., Karthaus, D., Taverne, M. A., Merics, I., Szenci, O., 2002. The relationship between estrous behavioral score and time of ovulation in dairy cattle. Journal of Dairy Science. 85 : 1150–6.
Wildman E. E., Jones, G. M., Wagner, P. E. Boman, R. L. Troutt Jr., H. F. & Lesch, T. N., 1982. A dairy cow body condition scoring system and its relationship to selected production characteristics. Journal of Dairy Science 65:495.
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Bishop, H., Pfeiffer, D. Factors effecting reproductive performance in Rwandan cattle. Trop Anim Health Prod 40, 181–184 (2008). https://doi.org/10.1007/s11250-007-9078-1
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DOI: https://doi.org/10.1007/s11250-007-9078-1