Effect of (Hemsl.) A. Gray intake on in vivo methane (CH) emission and milk production in dual-purpose cows in the Colombian Amazonian piedmont.

The inclusion of in pasture-based diets is a promising alternative to increase bovine productivity, due to its chemical composition and wide adaptation, but there are few in vivo studies to determine its effect on methane yield and animal production in grazing systems. The objective of this study was to determine the effects of the inclusion in a basal diet of on methane (CH) emissions by enteric fermentation, and on milk yield and quality in dual-purpose cows. The polytunnel technique was used for the determination of methane yield and two diets were evaluated (Diet 1: 100%; Diet 2: 15% +  85% dry matter basis) in the moderate rainy and rainy seasons using a experimental design; milk production was measured by daily milk weighing, and milk quality was determined using a LACTOSCAN analyzer.