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Dam reproductive performance of purebred Africander, Angoni, Barotse and Boran, and reciprocal crossbreds of the latter 3 breeds under ranching conditions were investigated. Mean performance based on a maximum of 1996 records collected over six parities were: calving rate, 65.6%; weaning weight r...


Thorpe, W.R.Cruickshank, D.K.R.Thompson, R.[Genetic and environmental influences on beef cattle production in Zambia. 4. Weaner production from purebred and reciprocally crossbred dams]Genetic and environmental influences on beef cattle production in Zambia. 4. Weaner production from purebred and reciprocally crossbred dams

Inadequate nutrition and helminthiasis were among the important constraints to smallscale dairy production identified in a 4-country survey among traditional dairy producers. Consequently, multi-locational trials to study helminth control and supplementary feeding to grazing cattle are being impl...


Agyemang, K.Smith, Jimmy W.Larbi, Asamoah[Dairy response to feed supplementation and helminth control in indigenous cattle in traditional systems in West Africa: A case study from Nigeria]Dairy response to feed supplementation and helminth control in indigenous cattle in traditional systems in West Africa: A case study from Nigeria

A preliminary search for QTLs in a cattle F2 resource populations segregating for trypanotolerance has revealed three large candidate chromosomal regions (Bta02, Bta05, Bta07). In order to narrow down the position of the trypanotolerant QTLs, we are building comparative chromosomal maps between c...


Nilsson, P.H.Kang'a, S.Rottengatter, K.Suedbeck, U.Iraqui, F.Mwakaya, J.Mwangi, D.Womack, J.E.Goldammer, T.Schwerin, M.Bradley, D.Agaba, MorrisSugimoto, K.Gelhaus, A.Horstmann, R.Teale, A.J.Kemp, Stephen J.Hanotte, Olivier H.[Radiation hybrid maps of candidate trypanotolerance regions in cattle]Radiation hybrid maps of candidate trypanotolerance regions in cattle

We have sought to test the possibility of detecting regions of the genome under selection through effects on variation at linked neutral genetic markers. Particularly, we investigated three genomic regions identified by mapping in a cross-bred pedigree as harbouring QTL for trypanosomiasis tolera...


Park, S.D.E.Adomefa, K.Dao, B.Hanotte, Olivier H.Kemp, Stephen J.Sow, R.S.Teale, A.J.Bradley, D.G.[Application of population genetic analysis of linked, mapped microsatellites to the identification of loci under selection for disease resistance]Application of population genetic analysis of linked, mapped microsatellites to the identification of loci under selection for disease resistance
Fawcett, D.W.Musoke, A.J.Voigt, W.[Interaction of sporozoites of Theileria parva with bovine lymphocytes in vitro. 1. Early events after invasion]Interaction of sporozoites of Theileria parva with bovine lymphocytes in vitro. 1. Early events after invasion
Fawcett, D.W.Grootenhuis, J.G.Morzaria, S.P.Conrad, P.A.[Ultrastructure of the intraerythrocytic stage of theileria species from cattle and waterbuck]Ultrastructure of the intraerythrocytic stage of theileria species from cattle and waterbuck

Theileria parva causes an acute fatal disease in cattle, but infections are asymptomatic in the African buffalo (Syncerus caffer). Cattle can be immunized against the parasite by infection and treatment, but immunity is partially strain specific. Available data indicate that CD8+ T lymphocyte res...


Pelle, RogerGraham, S.P.Njahira, Moses N.Osaso, J.Saya, R.M.Odongo, David O.Toye, Philip G.Spooner, P.R.Musoke, A.J.Mwangi, D.M.Taracha, E.L.N.Morrison, W. IvanWeir, W.Silva, J.Bishop, Richard P.[Two Theileria parva CD8 T Cell Antigen genes are more variable in buffalo than cattle parasites, but differ in pattern of sequence diversity]Two Theileria parva CD8 T Cell Antigen genes are more variable in buffalo than cattle parasites, but differ in pattern of sequence diversity
Autor: Kidner, E.M.

Discusses the effect of season of calving on pattern of bodyweight changes of Boran cows during suckling period in association with calving interval.


Kidner, E.M.[Seasonal bodyweight changes in suckled Boran cows at pasture and their probable association with the interval between calvings]Seasonal bodyweight changes in suckled Boran cows at pasture and their probable association with the interval between calvings

Birth weights of 1,030 Boran calves born between 1961 and 1979 at Malya Livestock Research Center in Tanzania were analysed to obtain means and study factors affecting this trait over the years under study and to estimate correction factors for effect of season and sex of calf. Also determined we...


Mpiri, D.B.Mpiri, M.TRobison, O.W.[Factors affecting birth weights of the Boran cattle in Tanzania]Factors affecting birth weights of the Boran cattle in Tanzania

Records on birth weight and pre-weaning growth of 3959 Boran calves, which were progeny of 51 sires and 979 dams, were analysed by least-squares analysis of variance. The vaiance components for sires, dams and maternal grandsires were estimated from the data. On the basis of assumed genetic corre...


Arnason, T.Kassa-Mersha, H.[Genetic parameters of growth of Ethiopian Boran cattle]Genetic parameters of growth of Ethiopian Boran cattle

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