Presents results of a study conducted to estimate the effects of heterosis and breed on a series of maternal and individual traits; uses Boran X Ankole and Boran X Zebu as crossbred cows and Ankole, Boran and Small East African Zebu as straight-bred cows; includes calf crop born, preweaning viabi...
Presents results of a study conducted to estimate the effects of heterosis and breed on a series of maternal and individual traits; takes Boran X Ankole and Boran X Zebu as crossbred cows and Ankole, Boran and Small East African Zebu as straightbred cows; includes traits like calf crop born, prew...
Gregory, K.E.
,
Trail, J.C.M.
,
Marples, H.J.S.
,
Kakonge, J.
,
[Heterosis and breed effects on maternal and individual traits of Bos indicus breeds of cattle]
,
Heterosis and breed effects on maternal and individual traits of Bos indicus breeds of cattle
Evaluates the productivity of Boran cattle maintained with chemoprophylaxis in an area of massive Glossina morsitans sub morsitans, G. pallidipes et G. Brevipalpis challenge at Makwaja ranch, in Tanzania and analyses the effect of a chemoprophylactic drug (isometamidium chloride) on cattle produc...
Trail, J.C.M.
,
Murray, M.
,
Sones, Keith R.
,
Jibbo, J.M.C.
,
Durkin, J.W.
,
Light, D.E.
,
[Chemoprophylaxis: Boran cattle can be productive under high tsetse challenge]
,
Chemoprophylaxis: Boran cattle can be productive under high tsetse challenge
Compares individual as well as maternal traits of different breeds of Bos indicus and Bos taurus cattle interms of cow weight at parturition, weaning and at dif. stages after parturition, calf crop, viability and weight at dif. ages.
Gregory, K.E.
,
Trail, J.C.M.
,
Marples, H.J.S.
,
Kakonge, J.
,
[Characterization of breeds of Bos indicus and Bos taurus cattle for maternal and individual traits]
,
Characterization of breeds of Bos indicus and Bos taurus cattle for maternal and individual traits
Examen des facteurs genetiques et d'environnement influencant les poids corporels des agneaux et brebis Djallonke eleves au Centre de Recherches Zootechniques de Kolda, Senegal, de 1974 a 1980 avec des donnees sur les index de productivite bases sur le poids d'agneau sevre produit par an par breb...
Fall, Abdou
,
Diop, Mouhamadou
,
Sandford, J.
,
Gueye, E.
,
Wissocq, Y.J.
,
Durkin, J.W.
,
Trail, J.C.M.
,
[Etude sur la productivite des moutons Djallonke au Centre de recherches zootechniques de Kolda, au Senegal. II. Poids corporels, productivite des brebis et du troupeau]
,
Etude sur la productivite des moutons Djallonke au Centre de recherches zootechniques de Kolda, au Senegal. II. Poids corporels, productivite des brebis et du troupeau
Discusses trypanotolerance in cattle and prospects for the control of trypanosomiasis by selective breeding in Africa. Looks into methods available for control including tsetse control, drugs & vaccination and discusses constraints that limit the control. Also discusses prospects for future contr...
Murray, M.
,
Trail, J.C.M.
,
D'Ieteren, G.D.M.
,
[Trypanotolerance in cattle and prospects for the control of trypanosomiasis by selective breeding]
,
Trypanotolerance in cattle and prospects for the control of trypanosomiasis by selective breeding
Trail, J.C.M.
,
[Cattle breed evaluation studies by the International Livestock Center for Africa (ILCA)]
,
Cattle breed evaluation studies by the International Livestock Center for Africa (ILCA)
Etude sur la productivite de moutons Djallonke au Centre de Recherches Zootechniques de Kolda, au Senegal, particularly sur les parametres de reproduction et de viabilite avec analyse des relations entre le taux de mortalite et la pluviosite ainsi que les resultats examines en fonction des taux p...
Fall, Abdou
,
Diop, Mouhamadou
,
Sandford, J.
,
Gueye, E.
,
Wissocq, Y.J.
,
Durkin, J.W.
,
Trail, J.C.M.
,
[Etude sur la productivite des moutons Djallonke au Centre de recherches zootechniques de Kolda, au Senegal. I. Parametres de reproduction et viabilite. (The productivity of West African Dwarf sheep at the Centre de Recherches Zootechniques de Kolda, Senegal. I. Reproductive and viability traits)]
,
Etude sur la productivite des moutons Djallonke au Centre de recherches zootechniques de Kolda, au Senegal. I. Parametres de reproduction et viabilite. (The productivity of West African Dwarf sheep at the Centre de Recherches Zootechniques de Kolda, Senegal. I. Reproductive and viability traits)
Presented data on maternal traits, i.e.Age at first calving, calving interval, calf weaning weight and cow productivity index, of pure Boran and Boran crossbred w. each of Charolais, Ayrshire and Santa Gertrudis on privately owned ranches in Machakos District, Kenya.
Gregory, K.E.
,
Trail, J.C.M.
,
Sandford, J.
,
Durkin, J.W.
,
[Crossbreeding cattle in beef production programmes in Kenya. I. Comparison of purebred Boran and Boran crossed with the Charolais, Ayrshire and Santa Gertrudis breeds]
,
Crossbreeding cattle in beef production programmes in Kenya. I. Comparison of purebred Boran and Boran crossed with the Charolais, Ayrshire and Santa Gertrudis breeds