African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6574

Full Length Research Paper

Use in vitro gas production technique for assessment of nutritional quality of diets by range steers

M. Murillo1*, E. Herrera1, O. Reyes1, J. N. Gurrola2 and E. Gutierrez3
1Faculty of Veterinary Medicine, Juárez University of the State of Durango, México. 2CIIDIR-IPN, Unit Durango, México. 3Faculty of Agronomy, Autonomous University of Nuevo León, Mexico.
Email: [email protected]

  •  Accepted: 14 February 2011
  •  Published: 04 June 2011

Abstract

This study evaluated the seasonal changes in the in vitro gas production of diets consumed for grazing steers. The gas produced by the soluble fraction “a” and insoluble but slowly fermenting fraction “b”, were highest in summer and fall (p<0.01). The constant gas production rate “c” was affected by season of the year (p<0.01). The organic matter digestibility (OMD) and short chain fatty acids (SCFA) was affected by season of the year (p<0.05). The in vitro gas production is a good indicator of the nutritive quality diet consumed by grazing cattle.

 

Key words: Steers, grazing, in vitro gas production, rangelands.