FERMENTACION RUMINAL, DIGESTIBILIDAD Y PRODUCCION DE METANO EN OVINOS ALIMENTADOS CON CUATRO NIVELES DE RASTROJO DE MAIZ
The objective was to evaluate four inclusion levels of corn stover (CS): T15, T30, T45 and T60 %, on ruminal fermentation, digestibility (D) and methane production in sheep. A 4 x 4 latin square experimental design was used, with four wethers with ruminal and duodenal cannula, and four periods of 14...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2012 |
| País: | México |
| Institución: | Universidad Autónoma de Nayarit |
| Repositorio: | Repositorio Institucional Aramara de la UAN |
| Idioma: | español |
| OAI Identifier: | oai:dspace.uan.mx:123456789/858 |
| Acceso en línea: | http://dspace.uan.mx:8080/jspui/handle/123456789/858 |
| Access Level: | acceso abierto |
| Palabra clave: | Corn stover sheep methane Rastrojo de maíz ovinos metano BIOLOGÍA Y QUÍMICA [2] |
| Sumario: | The objective was to evaluate four inclusion levels of corn stover (CS): T15, T30, T45 and T60 %, on ruminal fermentation, digestibility (D) and methane production in sheep. A 4 x 4 latin square experimental design was used, with four wethers with ruminal and duodenal cannula, and four periods of 14 days. Feed was offered at 2.2 % of live weight, in two portions day-1. Total concentration of VFA were similar (P>0.05) in T15, T30 and T45, but higher (P<0.01) in T15 (103.7) than in T60 (67.6 mmol L-1). VFA molar proportions were similar (P>0.05) between treatments, with a mean of 66.4, 20.9 and 12.8 % for acetate, propionate and butyrate, respectively. DMD was higher (P<0.01) in T15 (75.3 %) than in others (67.2 %), but OMD differed only between T15 and T60: 61.9 % vs 47.5 %. CPD averaged 62.0 %. NDFD was higher (P<0.01) in T15 (55.0 %) than in others (37.5 %). Estimated methane production did not differ (P>0.05) between treatments, with a mean of 0.61 mol mol-1 of fermented glucose equivalent, but if expressed in mol kg-1 of fermented OM, there were differences (P<0.01) only between T15 and T60:1.30 vs 1.65. Mayor differences were between T15 and T60: it is possible to include until 45 % CS without affecting efficiency and without increasing methane production. |
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