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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

The predicted performance of nine crossbreeding strategies for milk production and reproductive traits and cow live weights (LW) were compared. The strategies were selected because of their superiority to many others. The data were from crosses of Ayrshire (A), Brown Swiss (B), Friesian (F) and S...


Kahi, A.K.Nitter, G.Thorpe, W.R.Gall, C.F.[Crossbreeding for dairy production in the lowland tropics of Kenya. II. Prediction of performance of alternative crossbreeding strategies]Crossbreeding for dairy production in the lowland tropics of Kenya. II. Prediction of performance of alternative crossbreeding strategies

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

The study was carried out in three locations in the Mombasa region along the kenyan coast. A total of about 800 ewes (Dorper) were mated with Dorper and Red Maasai rams. Mating was restriced to a 6-week period and at night time only. Lambing seasons were targeted for March/April and November/Dece...


Bullerdieck, P.Peters, Kurt J.Thorpe, W.R.[Importance of haemonchosis in lamb rearing in a subhumid environment in Kenya: Preliminary results]Importance of haemonchosis in lamb rearing in a subhumid environment in Kenya: Preliminary results

Reports the prevalence species and intensity of trypanosome parasitaenia (1986-1987) for N'Dama cattle managed in village herds inforest and plateau areas of Idiofa, Zaire, Examines tsese challenge & its relationshipto trypanosome prevalence. Reports the duration of infection, pattern of parasita...


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

Evaluates the reproductive and lactational performances, length of productive life of the Jersey breed from records for 1960 to 1988 in coastal lowland semi-humid Kenya. Reports estimates of reproductive and lactational performance, the effects of non-genetic factors on performance and estimates ...


Njubi, D.M.Rege, J.E.O.Thorpe, W.R.Collins-Lusweti, E.Nyambaka, R.[Genetic and environmental variation in reproductive and lactational performance of Jersey cattle in the coastal lowland semi-humid tropics]Genetic and environmental variation in reproductive and lactational performance of Jersey cattle in the coastal lowland semi-humid tropics

Reports the prevalence, species and intensity of trypanosome infections over a 3 year period for N'Dama cattle managed on Mushie Ranch, Zaire. Presents the effects of the trypanosome infections on blood packed cell volume reproductive performance and liveweights.


Mulungo, M.D'Ieteren, G.D.M.Feron, A.Itty, P.Maehl, H.M.Nagda, S.M.Paling, R.W.Rarieya, J.M.Thorpe, W.R.Trail, J.C.M.[Trypanosomiasis in N'Dama cattle in Zaire and its effects on their health and production]Trypanosomiasis in N'Dama cattle in Zaire and its effects on their health and production

Presents examples of collaborative studies between the International Livestock Center for Africa and national research organizations to describe some of the genetic resources available for improving milk production in sub-Saharan Africa. Describes the performance of zebu breeds indigenous to the ...


Thorpe, W.R.Trail, J.C.M.[Availability of genetic resources for milk production in developing countries, with special reference to sub-Saharan Africa]Availability of genetic resources for milk production in developing countries, with special reference to sub-Saharan Africa

Results of a study conducted to estimate the importance of factors influencing blood packed cell volume (PCV) and to investigate possible relationships between PCV and reproductive & liveweight performance of N'Dama cattle exposed and not exposed to trypanosomiasis under the same system of manage...


Feron, A.D'Ieteren, G.D.M.Itty, P.Maehl, H.M.Mulungo, M.Nagda, S.M.Paling, R.W.Rarieya, J.M.Sheria, M.Thorpe, W.R.Trail, J.C.M.[Can PCV be used as an indicator of trypanosomiasis and production level in cattle?]Can PCV be used as an indicator of trypanosomiasis and production level in cattle?

Reports the influence of breed and animal age on the prevalence, species and intensity of trypanosome infection and the effects of the infections on the blood packed cell volume (PCV) of N'Dama, Nguni and crossbred cattle. Presents the effects of trypanosome infection, PCV level and lactational s...


Ordner, G.D'Ieteren, G.D.M.Dumont, P.Itty, P.Jeannin, P.Maehl, H.M.Nagda, S.M.Paling, R.W.Rarieya, J.M.Thorpe, W.R.Trail, J.C.M.Yangari, G.[Comparative performance of trypanotolerant and more susceptible cattle breeds exposed to trypanosomiasis in Gabon]Comparative performance of trypanotolerant and more susceptible cattle breeds exposed to trypanosomiasis in Gabon

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