<b>In vitro ruminal fermentation kinetics of Marandu grass at different harvest ages</b> - doi: 10.4025/actascianimsci.v33i3.9462

  • Jacqueline Firmino de Sá Universidade Estadualdo Sudoeste da Bahia
  • Márcio dos Santos Pedreira UESB
  • Fabiano Ferreira da Silva UESB
  • Mauro Pereira de Figueiredo UESB
  • Gesiane Moura Neves Rebouças UFMG
  • Danilo Ribeiro de Souza UESB
DOI: https://doi.org/10.4025/actascianimsci.v33i3.9462
Keywords: Brachiaria brizantha, degradation rate, gas production

Abstract

The objective of the work was to evaluate ruminal fermentation kinetics parameters of Brachiaria brizantha, harvested at 28, 35 and 54 days, using the semiautomatic in vitro gas production technique. Analyses were carried out for dry matter (DM), organic matter (OM), crude protein (CP), ether extract (EE), neutral detergent fiber corrected for ash and protein (NDFAP), acid detergent fiber (ADF), neutral detergent insoluble nitrogen (NDIN), acid detergent insoluble nitrogen (ADIN), lignin (LIG), total carbohydrates (TC), non-fiber carbohydrates (NFC), fraction B2 and the fraction C, respectively. The data of gas production were adjusted to the bicompartmental logistic model. The design used was completely randomized. The data were submitted to analysis of variance and regression, at the level of 5% probability. There was a significant effect (p <0.05), for the variables DM, NDFAP, ADF, NDIN, ADIN, TC, B2, with linear increase as harvest age advanced. For gas production, fraction A was similar between the ages of 28 and 35 days, with 95.75 and 116.8 mL g-1 of DM, respectively. The recommended age to obtain the best nutritional value of Brachiaria brizantha was 28 days.

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Author Biographies

Jacqueline Firmino de Sá, Universidade Estadualdo Sudoeste da Bahia
Graduada em zootecnia pela Universidade Estadual do Sudoeste da Bahia (UESB), no ano de 2004. Mestre em zootecnia pela UESB no ano de 2007 e atualmente aluna do curso de Doutorado da UESB.
Márcio dos Santos Pedreira, UESB
Zootecnista, professor DSc do departamento de tecnologia rural e animal da UESB.
Fabiano Ferreira da Silva, UESB
Médico veterinário, professor DSc do departamento de tecnologia rural e animal da UESB. Pesquisador do CNPQ
Mauro Pereira de Figueiredo, UESB
professor DSc do departamento de Fitotecnia e zootecnia da UESB
Gesiane Moura Neves Rebouças, UFMG
Engenheira agrônoma. Mestre em Zootecnia pela Universidade Estadual do Sudoeste da BAhia (UESB)
Danilo Ribeiro de Souza, UESB
Zootecnista, Mestrandoda Universidade Estadual do sudoeste da Bahia
Published
2011-03-21
How to Cite
Sá, J. F. de, Pedreira, M. dos S., Silva, F. F. da, Figueiredo, M. P. de, Rebouças, G. M. N., & Souza, D. R. de. (2011). <b>In vitro ruminal fermentation kinetics of Marandu grass at different harvest ages</b&gt; - doi: 10.4025/actascianimsci.v33i3.9462. Acta Scientiarum. Animal Sciences, 33(3), 225-231. https://doi.org/10.4025/actascianimsci.v33i3.9462
Issue
Vol 33 No 3 (2011)
Section
Pasture and forage utilization

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