Abstract

The study evaluated the influence protected soybean groats and soybean oil as feed supplement on total gas production. Protected feed supplement was produced from soybean groats protected by formaldehyde and soybean oil, through two protection methods, namely saponification and microencapsulation. The experiment consisted of three treatments i.e. P0: basal diet (control); P1: basal diet + 5 % protected feed supplement and P2: basal diet + 10 % protected feed supplement. Each treatment was repeated 10 times. The observed variables were total gas production for 48 hours, gas production from fraction a and b, and degradation rate of fraction b (c value). Data were analyzed by analysis of variance. Protected soybean groats and soybean oil decreased of total gas production for 48 hours P<0,05), but did not affect gas production from fraction a, fraction b and the degradation rate of fraction b (c value). It can be concluded that the effect of supplementation of soybean groats and soybean oil decreased total gas production in the rumen and did not affect gas production from fraction a, fraction b and degradation rate of fraction b (c value) and could strategically be used to decrease methane emission from rumen fermentation in vitro.

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