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Evaluation of genetic variation in nutritive value of Gliricidia sepium in feeding trials and by an in vitro gas production technique

  • J. L. Stewart (a1), C. D. Wood (a2), M. Kass (a3), S. López Ortíz (a3), A. Larbi (a4), S. Premaratne (a5), B. Tangendjaja (a6), E. Wina (a6) and J. E. Vargas (a7)...

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Gliricidia sepium (Jacq.) Steud. is widely used as a high-protein supplementary food for ruminants in many parts of the tropics. Native to Central America and Mexico, it has become widely naturalized elsewhere but the introduced populations are mostly of unknown origin and uncertain quality. Studies of the genetic resources from the native range, under a research programme at OFI, have shown great variation between populations in yield (Dunsdon and Simons, 1996). The objective of the research described here was to investigate whether there is also important genetic variation in fodder quality, to inform decisions on future distribution of ‘superior’ germplasm of G. sepium under the OFI programme.

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Benneker, C. and Vargas, J. E. 1994. [Study of voluntary intake of five provenances of Gliricidia sepium conducted with African sheep fed with three different diets.] Livestock Research for Rural Development 6:8189.
Dunsdon, A. J. and Simons, A. J. 1996. Provenance and progeny trials. In Gliricidia sepium. Genetic resources for farmers (ed. Stewart, J. L., Allison, G. E. and Simons, A. J.), pp. 93118. Oxford Forestry Institute, University of Oxford, UK.
Larbi, A., Osakwe, I. I. and Lambourne, J. W. 1993. Variation in relative palatability to sheep among Gliricidia sepium provenances. Agroforestry Systems 22:221224.
Lôpez, O. S. 1995. [Evaluation of secondary compounds and voluntary intake of five provenances of Gliricidia sepium(Jacq.) Walp., during two seasons, in the humid tropics of Costa Rica.] M.Sc. thesis, CATIE, Costa Rica.
Theodorou, M. K., Williams, B. A., Dhanoa, M. S., McAllan, A. B. and France, J. 1994. A simple gas production method using a pressure transducer to determine the fermentation kinetics of ruminant feeds. Animal Feed Science and Technology 48: 185197.

Evaluation of genetic variation in nutritive value of Gliricidia sepium in feeding trials and by an in vitro gas production technique

  • J. L. Stewart (a1), C. D. Wood (a2), M. Kass (a3), S. López Ortíz (a3), A. Larbi (a4), S. Premaratne (a5), B. Tangendjaja (a6), E. Wina (a6) and J. E. Vargas (a7)...

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