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University of Newcastle upon Tyne (1996)

An economic evaluation of research and development expenditure on communal area livestock systems in Zimbabwe

Sibanda, Ronny

Titre : An economic evaluation of research and development expenditure on communal area livestock systems in Zimbabwe

Auteur : Sibanda, Ronny

Université de soutenance : University of Newcastle upon Tyne

Grade : Doctor of Philosophy (PhD) 1996

Résumé
Two sets of data were used to estimate farm level optimal enterprise mix and output in smallholder crop-livestock farm systems found in semi-arid communal areas (Natural Regions IV and V) and to assess potential economic impact of introducing in these systems improved breeding technology. The first set comprised cross-section data from a survey of two communal areas each representing Regions IV and V respectively in south-western Zimbabwe, standards, and other relevant information in the literature. The second set was existing information on cow genotypes being developed at Matopos Research Station under the Beef Crossbreeding Project (BCP). The cross-section data were used to define a typical average household farm system for each communal area in terms of farm resources, inputs used, outputs, market conditions, and interaction between the crop and livestock sub-systems. In part, definition of the household farm system involved assessment of risk averseness among communal area producers. Characteristics (input requirements, reproduction, survival and growth of progeny) of cow genotypes evaluated in the BCP were used to define improved breeding technology. The on-station data were viewed as reflecting the potential level of productivity and a measure of the scope for improvement in the traditional farm’s total income. Ex ante testing of the same breeds under resource constrained communal area farm conditions provided a measure of the potential for adoption of these breeds by communal area farmers. Representative farm models were based upon Integer Linear Programming (ILP). The basic models were adjusted to incorporate representation of risk through a MOTAD extension.The survey results showed that farm systems in semi-arid communal areas can be classified as dominantly subsistence farms (over 70 per cent of crop output goes to the household).

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Page publiée le 27 février 2015, mise à jour le 19 octobre 2018