Vegetable oils on in vitro fatty acids and methane production in dairy cows.

Authors

  • Esperanza Prieto-Manrique Universidad de Sucre. Facultad de Ciencias Agropecuarias.
  • Julio Ernesto Vargas-Sánchez Universidad de Caldas. Facultad de Ciencias Agropecuarias.
  • Joaquín Angulo-Arizala Universidad de Antioquia. Facultad de Ciencias Agrarias.
  • Liliana Mahecha Ledesma Universidad de Antioquia. Facultad de Ciencias Agrarias.

DOI:

https://doi.org/10.15517/am.v28i1.22034

Keywords:

conjugated linoleic acid, trans vaccenic acid, ruminal fermentation, dairy cattle under grazing, silvopastoral system.

Abstract

The aim of this study was to evaluate the effect of the addition of vegetable oils to representative diets of dairy cows under grazing, on the in vitro fatty acids, ruminal fermentation and methane production. The research was conducted in the laboratory NUTRILAB-GRICA, belonging to the Faculty of Agricultural Sciences, University of Antioquia, Medellin, Colombia, in August 2013. The technique of in vitro gas production was used. In four diets (two Cynodon plectostachyus monoculture and two intensive silvopastoral system with Leucaena leucocephala), the addition of three vegetable oils (sun ower, linseed and palm) at 2 and 4% of MS was assessed using a factorial design completely random 4x3x2. In all diets, supplementation with sun ower oil increased the content of linoleic acid (C18: 2 c9, 12), conjugated linoleic acid (CLA-c9t11 ) and transvaccénico acid (ATV, C18:1 t11) after fermentation (p<0.0001), decreased by 2,4 and 0.9% DM digestibility regarding palm oil (p<0.05) and linseed oil (p>0.05). No oil affected fermentation kinetics, pH, total of volatile fatty acid (VFA), VFA ratio or methane production. 

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Published

2016-12-12

How to Cite

Prieto-Manrique, E., Vargas-Sánchez, J. E., Angulo-Arizala, J., & Mahecha Ledesma, L. (2016). Vegetable oils on in vitro fatty acids and methane production in dairy cows. Agronomía Mesoamericana, 28(1), 1–18. https://doi.org/10.15517/am.v28i1.22034

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