Performance of growing lambs supplemented with Mucuna pruriens
of supplementation with Mucuna pruriens on the performance of growing lambs. Two studys were conducted. In Study 1, Mucuna bean was offered as a supplement in a basal diet of Napier grass (Pennisetum purpureum). Twelve entire males were allocated to three experimental diets where the forage supplied...
| Autores: | , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2003 |
| País: | México |
| Recursos: | Universidad Autónoma de Yucatán |
| Repositorio: | Redalyc-UADY |
| OAI Identifier: | oai:redalyc.org:93911288012 |
| Acesso em linha: | https://www.redalyc.org/articulo.oa?id=93911288012 |
| Access Level: | acceso abierto |
| Palavra-chave: | Agrociencias sheep Mucuna pruriens supplementation voluntary intake in vivo digestibility |
| Resumo: | of supplementation with Mucuna pruriens on the performance of growing lambs. Two studys were conducted. In Study 1, Mucuna bean was offered as a supplement in a basal diet of Napier grass (Pennisetum purpureum). Twelve entire males were allocated to three experimental diets where the forage supplied 60% of the total DM intake and the supplementation the remainder 40%. In Diet 1 (Control), animals were supplemented with the conventional concentrate of sorghum and soybean meal; Diet 2 was supplemented with half of the conventional concentrate and half with ground Mucuna (including both the grain and the husk of the bean); Diet 3 was supplemented with only Mucuna. In Study 2, four of the lambs from the previous study were fed a diet of entirely velvet bean for 10 d. In Study 1, a significant reduction in the intake of the supplement was observed with increasing level of velvet bean, being 300, 293 and 200 g DM a-1 d-1 for groups with diets 1, 2 and 3, respectively. Similar trends were found in the total DM intake (forage and supplement) and the digestibility. However, the apparent DM digestibility did not differ (P>0.05) among the experimental diets being 70, 68 and 64 % for groups with diets 1, 2 and 3 respectively. In Study 2, no negative short-term impacts were found in lambs consuming a diet that was entirely based on Mucuna. Average intake across the experimental period was 680 g DM a-1 d-1. Animals eating only Mucuna spent less time eating and ruminating than animals eating Mucuna-forage diet, presumably because their diet contained less neutral detergent fiber (NDF). It is concluded that velvet bean can be used to substitute more expensive supplements without a significant reduction in animal digestibility. To eliminate any possibility for negative long-term effects from diets containing high levels of Mucuna, a study involving more animals of longer duration should be conducted. |
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