Exogenous fibrolytic enzymes in ruminal degradation in situ of king grass (Pennisetum hybridum) pasture in two cutting ages

Authors

  • Jorge Gustavo Quintana Zamora Universidad Técnica Estatal de Quevedo
  • Alexandra Elizabeth Barrera Álvarez Universidad Técnica Estatal de Quevedo
  • Edwin Oswaldo Tapia Moreno Universidad Técnica Estatal de Quevedo
  • Juan Humberto Avellaneda Cevallos Universidad Técnica Estatal de Quevedo
  • Mayra Mercedes Peña Galeas Universidad Técnica Estatal de Quevedo
  • Piedad Francisca Yépez Macías Universidad Técnica Estatal de Quevedo

DOI:

https://doi.org/10.18779/cyt.v8i2.148

Keywords:

IN SITU DEGRADABILITY, RUMEN, INCUBATION

Abstract

The effect of an exogenous fibrolytic enzyme compound (Fibrozyme® 0 and 1.50 g enzyme/kg DM enzyme) on ruminal digestibility and fermentation was evaluated in a diet and king grass hay forage cut at 5 and 70 days. Nylon bags were incubated in the rumen fistulated sheep with king grass hay samples at 0, 12, 24, 48 and 72 h, feces and urine samples were taken to quantify the nitrogen retained. In situ degradability of MS king grass hay for 12, 24, 48 and 72 h was not affected by exogenous fibrolytic enzyme compound for both complete diets and for forage. In vivo digestibility (p>0.05) of nutrients was higher in hay 35 d compared to 70 d hay which was not influenced by exogenous fibrolytic enzyme compound. Nitrogen retention was higher for 35 d  hay without being influenced by the enzyme compound. We conclude that exogenous fibrolytic enzymes do not affect digestion of nutrients king grass hay pasture.

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Published

2016-01-27

How to Cite

Quintana Zamora, J. G., Barrera Álvarez, A. E., Tapia Moreno, E. O., Avellaneda Cevallos, J. H., Peña Galeas, M. M., & Yépez Macías, P. F. (2016). Exogenous fibrolytic enzymes in ruminal degradation in situ of king grass (Pennisetum hybridum) pasture in two cutting ages. Science and Technology, 8(2), 37–43. https://doi.org/10.18779/cyt.v8i2.148

Issue

Vol. 8 No. 2 (2015): July-December (2015)

Section

Ciencias agrarias

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