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Review of the classification, geographic distribution, animal performance and productivity of trypanotolerant cattle, sheep and goats in 18 countries of west & central Africa, particularly N'dama cattle, West African Dwarf Shorthorn, and Zebu x N'Dama crossbreeds. Discussion on potential utilizat...


Trail, J.C.M.Hoste, Christian H.Wissocq, Y.J.Lhoste, Ph.Mason, I.L.[Trypanotolerant livestock in West and Central Africa. Volume 1. General study]Trypanotolerant livestock in West and Central Africa. Volume 1. General study

Production characteristics, covering ewe breeding data; growth of lambs and use of correction factors for parity of dam, sex and type of birth of lamb; ewe milk production as measured by early lamb growth; effects of dry season on lamb weights and ewe milk production; repeatabilities and phenotyp...


Sacker, G.D.Trail, J.C.M.[Production characteristics of a flock of East African Blackhead sheep]Production characteristics of a flock of East African Blackhead sheep

Discusses factors influencing liveweight in a range of trypanotolerance network situations. Analyses liveweight traits, viz, dam liveweights at parturition and weaning, dam liveweight change between parturition and weaning, progeny liveweights at birth and weaning and progeny pre-weaning daily gain.


Maehl, J.H.H.Coulibaly, L.Defly, A.D'Ieteren, G.D.M.Feron, A.Grundler, G.Hecker, P.Itty, P.Mawuena, K.Morkramer, G.Mulungo, M.Nagda, S.M.Paling, R.W.Pelo, M.Rarieya, J.M.Schuetterle, A.Sheria, M.Thorpe, W.R.Trail, J.C.M.[Factors influencing liveweight in a range of network situations]Factors influencing liveweight in a range of network situations

Reports the viability, reproduction and associated growth rates achieved by grade Boran cattle maintained by chemoprophylaxis at Mkwaja Ranch in Tanzania, over the ten years, from 1973 to 1983.


Jibbo, J.M.C.Durkin, J.W.Light, D.Murray, M.Sones, Keith R.Trail, J.C.M.[Chemoprophylaxis: Its successful use in the control of trypanosomiasis in Boran cattle, at Mkwaja ranch, Tanzania]Chemoprophylaxis: Its successful use in the control of trypanosomiasis in Boran cattle, at Mkwaja ranch, Tanzania

Dorset Horn rams were used on East African Blackhead sheep in western Uganda in mutton production through improved lamb growth. The crossbred lambs were significantly heavier than the indigenous at birth. From birth to weaning at five months, the growth rates of both types were identical, being 0...


Trail, J.C.M.Sacker, G.D.[Production records of lambs from East African Blackhead ewes and Dorset Horn rams]Production records of lambs from East African Blackhead ewes and Dorset Horn rams

Describes the system of performance testing operating in Botswana & its value for the genetic improvement of beef cattle, examining dif. aspects of data collection, handling, analysis & use within a computerized system, & recording traits such as reproductive performance, growth, viability & moth...


Trail, J.C.M.Rennie, T.W.[Botswana: Performance testing of beef cattle]Botswana: Performance testing of beef cattle

Presents results of analyses carried out on a range of performance traits and productivity estimates for indigenous Arsi & Zebu cattle and their crosses with Jersey & Friesian, maintained for milk production at Asela station & on smallholder farms in the Arsi region of Ethiopia; includes data on ...


Kiwuwa, G.H.Trail, J.C.M.Yousef, M.K.Worku, G.Anderson, F.M.Durkin, J.W.[Crossbred dairy cattle productivity in Arsi region, Ethiopia]Crossbred dairy cattle productivity in Arsi region, Ethiopia

Emphasises the importance of trypanotolerance by indicating that trypanotolerant breeds were at least as productive as other indigenous African breeds in areas of zero to low tsetse challenge and that in areas where tsetse challenge was substantial, only trypanotolerant breeds could survive. It w...


Trail, J.C.M.D'Ieteren, G.D.M.[Characterisation of trypanotolerant cattle: a case study]Characterisation of trypanotolerant cattle: a case study

Studies the performance of the West African Dwarf Goat in seven villages of Southwest Nigeria dividing into three health regimes, viz, vaccination against PPR and dipping in insecticides against ectoparasites, particularly mange, dipping alone, and control group. describes the study area. Present...


Adeoye, S.A.O.Reynolds, L.Trail, J.C.M.Durkin, J.W.Light, D.E.[Performance of free roaming West African dwarf goats in Southwest Nigeria]Performance of free roaming West African dwarf goats in Southwest Nigeria

The prevalence, species and intensity of trypanosome parasitaemia over an eighteen-month period, February 1986 to July 1987, are reported for some 700 N`Dama cattle managed in twenty-five village herds in forest and plateau areas of Idiofa, Zaire. The effect of trypanosomiasis and other diseases ...


Ngamuna, S.D'Ieteren, G.D.M.Itty, P.Leak, S.G.A.Maehl, J.H.H.Minengu, M.Nagda, S.M.Paling, R.W.Rarieya, J.M.Thorpe, W.R.Trail, J.C.M.[Trypanosomiasis in N'Dama cattle under village management in Zaire]Trypanosomiasis in N'Dama cattle under village management in Zaire

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