The concentration of enteric methane from cattle fed different fibre level

Abstract

The study aimed to predict the concentration on cattle's enteric methane fed with different crude fibre (CF) content. Twenty-four male Bali cattle were fed with three different rations of A (low CF), B (medium CF) and C (high CF). At the end of the study, the rumen fluid was taken at 0 and 3 h after feeding, analysed for partial VFA to predict the concentration of enteric methane formed. The experiment design was a completed randomized design with three treatments and eight replications. Prediction of methane concentration at 0 and 3 h and their increase were not differed among treatments. At 0 h, the predicted methane concentrations of treatments A, B and C (mean ± SEM) were 12.59 ± 0.561 mmol L-1, 9.53 ± 1.737 mmol L-1 and 9.06 ± 1.041 mmol L-1, respectively. While at the 3 h were 16.64 ± 1.19 mmol L-1, 14.2 ± 1.052 mmol L-1 and 16.24 ± 1.495 mmol L-1, respectively. The increasing methane concentration up to 3 h was 42.74 ± 16.895%, 79.39 ± 16.332% and 58.00 ± 11.120%. It was concluded that the difference in fibre ration content had not affected the concentration of methane up to 3 h after feeding.