Discusses the results of the measurement of environmental changes in grazed ecosystems with reference to correlated changes in livestock management in Kenya; includes techniques used to measure the changes, and proposed methods; presents data on a case study at a group ranch located in western Kenya which covers 50,000 ha.; ends with comparison of surveys, i.e., that of 1978 and 1981.
A trial conducted to examine the effects of watering Boran cattle once daily, once every two days and once every three days on birth and weaning weights, post-weaning growth and cow performance under extensive grazing conditions.
A trial conducted to examine the effects of watering Boran cattle once daily, once every two days and once every three days on birth and weaning weights, post-weaning growth and cow performance under extensive grazing conditions.
El principal articulo de este nmero de Unasylva, que es del Profesor Gene Namkoong, se basa en la ponencia que present a los debates sobre recursos genticos en el Noveno Congreso Forestal Mundial, celebrado en Mxico, D.F., en julio de 1985. Considerando problemas de naturaleza tanto tcnica como tica, el Dr. Namkoong esboza varias estrategias alternativas para la ordenacin de los recursos genticos de las plantas leosas y examina su aplicacin a una serie de condiciones socioeconmicas, niveles de tecnologa y objetivos biolgicos.
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