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Zootecnia Tropical
Instituto Nacional de Investigaciones Agrícolas Venezuela
ISSN: 0798-7269
Vol. 28, No. 3, 2010, pp. 421-426
Bioline Code: zt10042
Full paper language: English
Document type: Note
Document available free of charge

Zootecnia Tropical, Vol. 28, No. 3, 2010, pp. 421-426

 es Evaluación de vainas y hojas de árboles forrajeros por la técnica de producción de gas in vitro
Hernández, Jorge Ezequiel Hernández; Guerra, Francisco Javier Franco; Ronquillo, Julio Cesar Camacho; Barros, Oscar Agustín Villarreal Espino; Olivera, Redimio Manuel Pedraza; Pérez, Fernando Xicotencatl Plata & Martínez, Germán David Mendoza

Resumen

Se estudió la cinética de producción de gas in vitro para conocer el potencial nutricional de hojas de arbóreas y vainas que crecen en una zona tropical seca de México usando heces bovinas como inóculo, comparadas con el pasto guinea como referencia ( Panicum maximum check for this species in other resources ). Se colectaron hojas y vainas de: Prosopis laevigata check for this species in other resources , Pithecellobium dulce check for this species in other resources y Pithecellobium acatlense check for this species in other resources ; y sólo hojas de: Amelanchier denticulata check for this species in other resources , Verbesiana crocata check for this species in other resources , Haemotoxylum brasiletto check for this species in other resources , Acacia bilimekii check for this species in other resources , Acacia pennatula check for this species in other resources , Acacia constricta check for this species in other resources y Lantana velutina check for this species in other resources . El inóculo se preparó con heces bovinas recién depuestas disueltas en agua en proporción 1:3. Se estimaron los parámetros de la velocidad máxima de producción de gas (v), la tasa de producción (s) y la fase lag (l). Tres especies mostraron bajos valores de gas (8,34-11,4 ml), mientras que la mayoría fueron cercanos a los del pasto guinea (29 ml) con una tasa de producción similar (0,03 h-1). Con excepción de la vaina de Pithecellobium acatlense, el resto tuvo mayor producción de gas (33,8-46,3 ml) que el pasto guinea (25,6 ml) con una tasa de producción igual o mayor (0,03 a 0,06 h-1). Los resultados indican que las vainas de Prosopis laevigata y Pithecellobium dulce tienen un valor nutricional superior al del pasto guinea mientras que las hojas de Haemotoxylum brasiletto y Prosopis laevigata presentaron un valor similar. La técnica de producción de gas in vitro permite estimar el valor potencial de recursos forrajeros no convencionales.

Palabras-clave
árboles forrajeros; producción de gas in vitro; hojas; vainas; inóculo

 
 en In vitro gas production of leaves and pods of fodder trees from dry tropic using bovine faeces as inoculums
Hernández, Jorge Ezequiel Hernández; Guerra, Francisco Javier Franco; Ronquillo, Julio Cesar Camacho; Barros, Oscar Agustín Villarreal Espino; Olivera, Redimio Manuel Pedraza; Pérez, Fernando Xicotencatl Plata & Martínez, Germán David Mendoza

Abstract

The kinetics of in vitro gas production to achnowledge the nutritional potential of tree leaves and pods that grow in a dry tropical area of Mexico using bovine faeces as inoculum, compared with guinea grass ( Panicum maximum check for this species in other resources ) as reference was studied. Leaves and pods were collected from: Prosopis laevigata check for this species in other resources , Pithecellobium dulce check for this species in other resources and Pithecellobium acatlense check for this species in other resources ; and only leaves from: Amelanchier denticulata check for this species in other resources , Verbesiana crocata check for this species in other resources , Haemotoxylum brasiletto check for this species in other resources , Acacia bilimekii check for this species in other resources , Acacia pennatula check for this species in other resources , Acacia constricta check for this species in other resources and Lantana velutina check for this species in other resources . The inoculums were prepared with fresh bovine faeces dissolved in water in 1:3 ratio. Parameters estimated were the maximum gas production (v), the production rate (s) and the lag phase (l). Three species showed low gas values (8,34-11,4 ml) while most were close to those of guinea grass (29 ml) with a similar production rate (0,03 h-1). In the pods, with exception of Pithecellobium acatlense, the others presented a higher gas production (33,8-46,3 ml) than guinea grass (25,6 ml) with a rate of production similar o greater (0,03 a 0,06 h-1). The results indicate that the pods of Prosopis laevigata and Pithecellobium dulce have nutritional value superior to that of guinea grass while leaves from Haemotoxylum brasiletto and Prosopis laevigata have a similar value. The gas production technique in vitro allows the estimation of the potential value of non-conventional feed resources.

Keywords
fodder trees; in vitro gas production; leaves; pods; inoculums

 
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