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Provides a brief history of the developmet of IDEAS (the ILCA Data entry and Analysis system) and presents findings from a questionnaire recently used to users to assess the uptake of IDEAS in African Production systems during the first years of its release.


Wissocq, N.M.Durkin, J.W.Trail, J.C.M.Gettinby, G.Bell, R.J.Berhane, H.Light, D.E.[Uptake of a microcomputer database package to assist livestock management decisions in Africa]Uptake of a microcomputer database package to assist livestock management decisions in Africa

Discusses use of mathematical modelling as a research tool to evaluate alternative practices, illustrating its application in beef cattle production systems in Botswana, with a description of data inputs, model utilized & simulations carried out. Compares actual & simulated values and examines ef...


Cartwright, T.C.Anderson, F.M.Buck, N.G.Nelsen, T.C.Trail, J.C.M.Pratchett, D.Sanders, J.Astle, W.Light, D.E.Rennie, T.W.Rose, T.J.Shorrock, C.[Systems modelling in cattle production - an application in Botswana]Systems modelling in cattle production - an application in Botswana

Examines some of the problems encountered and provides information on computer networking and the potential of computers in livestock research; describes the ILCA computer facility and the services which ILCA provides to national research organizations that do not have computer facilities.


Durkin, J.W.Light, D.E.Maehl, H.M.Trail, J.C.M.[Le materiel informatique du CIPEA et son utilisation]Le materiel informatique du CIPEA et son utilisation

A study on the econmic characters and productivity indices of traditionally managed goats and sheep undertaken in a semi-arid, agropastoral system in central Mali. Discusses reproductive characters including litter size and parturition interval, and weight characters.


Wilson, R.T.Light, D.E.[Livestock production in central Mali: Economic characters and productivity indices for traditionally managed goats and sheep]Livestock production in central Mali: Economic characters and productivity indices for traditionally managed goats and sheep

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

Quantifies a range of milk production characteristics over a long period of the Kenana, a Bos indicus breed of cattle indigenous to Northern Sudan, with particular reference to lactation yield, lactation strength and calving interval, and determines the effects of environmental including manageme...


Wilson, R.T.Ward, P.N.Saeed, A.M.Light, D.E.[Milk production characteristics of the Kenana breed of Bos indicus cattle in Sudan]Milk production characteristics of the Kenana breed of Bos indicus cattle in Sudan

Evaluation of reproductive performance, viability and growth of Afrikander, Tswana, Tuli and crossbred beef cattle in Botswana; data on calving percentage, calf mortality, weaning & birth weights, w. comparison of crossbreeding performance of Tuli, Bonsmara cattle, Brahman cattle & Simmental catt...


Trail, J.C.M.Buck, N.G.Light, D.E.Rennie, T.W.Rutherford, A.S.Miller, M.Pratchett, D.Capper, B.[Productivity of Africander, Tswana, Tuli and crossbred beef cattle in Botswana]Productivity of Africander, Tswana, Tuli and crossbred beef cattle in Botswana

Reports the productivity levels achieved by grade Boran cattle maintained by chemoprophylaxis at Mkwaja ranch (Tanzania) from 1973 to 1982. Analyses the effects of year and season of calving on birth, cow age, calf sex and area & location of herd on performance of the environmental influences. Ev...


Trail, J.C.M.Murray, M.Sones, Keith R.Jibbo, J.M.C.Durkin, J.W.Light, D.E.[Boran cattle maintained by chemoprophylaxis under trypanosomiasis risk]Boran cattle maintained by chemoprophylaxis under trypanosomiasis risk

Assesses reproductive performance, body weight & live weight, pre-weaning growth, and viability of progeny sired by various unrelated breeds which are representative of the Sanga X Sanga, Sanga X Zebu, Bos taurus X Sanga, Bos taurus X Zebu, and Bos taurus X Bos taurus crossbred groups. Measures t...


Tawonezvi, H.P.R.Ward, H.K.Trail, J.C.M.Light, D.E.[Evaluation of beef breeds for rangeland weaner production in Zimbabwe. 2. Productivity of crossbred cows and heterosis estimates]Evaluation of beef breeds for rangeland weaner production in Zimbabwe. 2. Productivity of crossbred cows and heterosis estimates
Tawonezvi, H.P.R.Ward, H.K.Trail, J.C.M.Light, D.E.[Evaluation of beef breeds for rangeland weaner production in Zimbabwe. 1. Productivity of purebred cows]Evaluation of beef breeds for rangeland weaner production in Zimbabwe. 1. Productivity of purebred cows

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