Determination of fermentative parameters of legumes for in vitro technique semi-automatic gas production

Abstract

 We evaluated the chemical composition and dynamics of ruminal fermentation of carbohydrate (CT) of pods bourdon old and white angico by in vitro semi-automatic gas production. The contents of dry matter (DM), mineral matter (MM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), ether extract (EE), total carbohydrates (TC) and non-fiber carbohydrates (NFC). Pressure readings were taken at 3, 5, 7, 9, 12, 16, 20, 24, 28, 34, 46, 59 and 72 h. The largest volumes of gas were observed in the bourdon old, end white angico showed less fermentation capacity producing less gas volume. The bourdon old had higher rates of gas production (c), differing (P <0.05) of the angico. Regarding microbial efficiency (A), significant differences (P <0.05) among the forages, with greater value for the rod-moss. The bourdon old and angico showed potential for use in ruminant feed because they are good quality standpoint fermentation. The bourdon old shows better fermentative parameters, which can be attributed to the higher content of non-fiber carbohydrates, compared with white angico.