Summary
Considering leguminous trees Leucaenaand Gliricidiaas good sources of quality food, on-station and on-farm studies were conducted in the humid zone of West Africa to establish animal responses to levels, times and forms of browse supplementation, to develop alternative feeding strategies for utilising limited feed supply and to assess the economic benefits of feed supplements as against the use of tree foliage as mulch for crop production. Results indicate that at any level of supplement, sheep grew twice as fast as goats. The main benefits of supplementation came through increased growth and survival. Form and level of supplementation had significant effect on intake. Economic analyses showed that crop response to mulching was the principal competing determinant of whether the use of tree foliage as feed supplement was economic.
Résumé
Considerées comme des sources nutritionnelles de qualité, des études furent menées surLeucaena etGliricidia dans les fermes et les lieux d’élevage dans la zone humide d’Afrique de l’ouest dans le but d’établir les résponses des animaux aux niveaux, durées et formes du broutage, pour développer des stratégies alternatives d’alimentation pour l’utilisation limitée d’apports alimentaires et pour estimer les avantages économiques des suppléments nutritionnels par opposition à l’utilisation de ces legumineuses comme terreau pour la production de récolte. Les resultats montrent que quel que soit le niveau d’apport nutritionnel, la croissance des moutons fut deux fois plus rapide que celle des chèvres. Les principaux intérêts de l’apport nutritionnel résiderent dans l’augmentation de croissance et de la survie des animaux. La nature et le niveau de l’apporteurent un effet significatif sur la consommation. Des analyses économiques montrérent que la résponse des récoltes après apport en terreau fut le principal facteur en compétition d’un point de vue économique, pour l’utilisation de ces légumineuses comme supplément alimentaire.
Resumen
Considerando que los árboles de los génerosLeucaena y Gliricidia son fuentes de alimento de buena calidad, se llevaron a cabo estudios en granjas y estaciones experimentales en zonas húmedas del Africa Occidental para determinar (1) la respuesta de los animales a diferentes niveles, momentos y formas de suplementación, (2) desarrollar estrategias de alimentación alternativas para aprovechar alimentos escasos y (3) determinar los beneficios económicos de la utilización de las hojas de los árboles mencionados como suplemento en lugar de como sistema de protección de los cultivos. Los resultados indicaron que, para cualquier nivel de suplementación, las ovejas crecieron dos veces más deprisa que las cabras. Los principales beneficios de la suplementación fueron un aumento en el crecimiento y en la supervivencia. La forma y el nivel de suplementación tuvieron efectos significativos sobre la ingestión. Los análisis económicos indicaron que la respuesta de los cultivos a la protección con hojas y estiercol fue el pricipal factor a tener en cuenta a la hora de decidir acerca de si la utilización de las hojas como suplemento para el ganado resultaba económica.
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Jabbar, M.A., Reynolds, L., Larbi, A. et al. Nutritional and economic benefits ofLeucaena andGliricidia as feed supplements for small ruminants in humid West Africa. Trop Anim Health Prod 29, 35–47 (1997). https://doi.org/10.1007/BF02632347
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DOI: https://doi.org/10.1007/BF02632347
Keywords
- Small Ruminant
- Mimosine
- Tree Foliage
- West African Dwarf
- Alley Farming