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Ítem Crossbreeding cattle in beef production programmes in Kenya. I. Comparison of purebred Boran and Boran crossed with the Charolais, Ayrshire and Santa Gertrudis breeds(Springer) Gregory, K.E.; Trail, J.C.M.; Sandford, J.; Durkin, J.W.Ítem Crossbreeding cattle in beef production programmes in Kenya. II. Comparison of purebred Boran and Boran crossed with the Red Poll and Santa Gertrudis breeds(Springer) Trail, J.C.M.; Gregory, K.E.; Durkin, J.W.; Sandford, J.Ítem Crossbred dairy cattle productivity in Arsi region, Ethiopia(International Livestock Centre for Africa) Kiwuwa, G.H.; Trail, J.C.M.; Yousef, M.K.; Worku, G.; Anderson, F.M.; Durkin, J.W.Ítem Production characters of the Sahiwal and Ayrshire breeds and their crosses in Kenya(Springer) Trail, J.C.M.; Gregory, K.E.Ítem Crossbreeding cattle in beef production programmes in Kenya. I. Comparison of purebred Boran and Boran crossed with the Charolais, Ayrshire and Santa Gertrudis breeds(Springer) Gregory, K.E.; Trail, J.C.M.; Sandford, J.; Durkin, J.W.Ítem N'dama cattle productivity at Teko Livestock Station, Sierra Leone, and initial results from cross-breeding with SahiwalCarew, S.F.; Sandford, J.; Wissocq, Y.J.; Durkin, J.W.; Trail, J.C.M.Ítem Trypanosomiasis in N'Dama cattle in Zaire and its effects on their health and production(OAU/STRC) 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.Ítem Crossbreeding cattle in beef production programmes in Kenya. II. Comparison of purebred Boran and Boran crossed with the Red Poll and Santa Gertrudis breeds(Springer) Trail, J.C.M.; Gregory, K.E.; Durkin, J.W.; Sandford, J.Ítem Effect of trypanosome infection on livestock health and production traits in two areas of Togo(OAU/STRC) Defly, A.; Awuome, K.; Bokovi, K.; D'Ieteren, G.D.M.; Grundler, G.; Handlos, Michael; Itty, P.; Maehl, H.M.; Morkramer, G.; Nagda, S.M.; Rarieya, J.M.; Thorpe, W.R.; Trail, J.C.M.Ítem Factors influencing reproductive performance in a range of network situations(ILCA/ILRAD) Thorpe, W.R.; Coulibaly, L.; Defly, A.; D'Ieteren, G.D.M.; Feron, A.; Grundler, G.; Hecker, P.; Itty, P.; Maehl, J.H.H.; Mawuena, K.; Morkramer, G.; Mulungo, M.; Nagda, S.M.; Paling, R.W.; Pelo, M.; Rarieya, J.M.; Schuetterle, A.; Trail, J.C.M.