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- Title
Análisis bromatológico y producción de gas in vitro de forrajes utilizados en el trópico seco mexicano.
- Authors
Almaraz-Buendía, I.; García, A. M.; Sánchez-Santillán, P.; Torres-Salado, N.; Herrera-Pérez, J.; Bottini-Luzardo, M. B.; Rojas-García, A. R.
- Abstract
The quality of tropical pastures is related to their use in the production of ruminants, since they base their diet on their consumption. The objective was to determine the bromatological analysis, in vitro gas production and fermentative characteristics of nine kinds of grass used in the feeding of ruminants in the dry Mexican tropics. The pastures were bermuda, mulato, insurgent, star, bramilla, llanero, mombaza, para and pangola to 56 d of regrowth. In the pastures it was determined crude protein (CP), ash (As), neutral detergent fiber (NDF), acid detergent fiber (ADF), fermentation kinetics, gas production, volatile fatty acids (VFA), total bacteria count, dry matter degradations (DMDEG), neutral detergent fiber degradations (NDFDEG) and acid detergent fiber degradations (ADFDEG). CP was higher in mombaza and para. The NDF was lower in llanero, mombaza, mulato and pangola. The As was lower in star and llanero (P<0.05). The ADF showed no differences between pastures (P> 0.05). The production of methane (CH4) was higher in bramilla, llanero, mombaza and pangola at 24 h, bermuda was higher at 48 h and star, insurgent and pangola was higher at 72 h (P<0.05). The total gas production was higher for mombaza. The DMDEG was higher in mombaza and mulato. The NDFDEG was higher in mombaza and the ADFDEG was higher in bermuda, insurgent, mombaza and mulato (P< 0,05). The bacteria count was higher in bramilla, star, pará and mombaza (P<0.05). Pastures did not show difference in acetate, butyrate and total VFA (P> 0.05). It is concluded, that the mombaza grass obtained the best bromatological characteristics, the best total gas production, where methane represented 40.3% and the higher degradations of the neutral and acid detergent fibers.
- Publication
Archivos de Zootecnia, 2019, Vol 68, Issue 262, p260
- ISSN
0004-0592
- Publication type
Article
- DOI
10.21071/az.v68i262.4145