Ruminal fermentation, nutrient metabolism, and methane emissions of sheep in response to dietary supplementation with Bacillus licheniformis
作者： K.D. Deng , Y. Xiao , T. Ma , Y. Tu , Q.Y. Diao
DOI: 10.1016/J.ANIFEEDSCI.2018.04.014
关键词:
摘要: Abstract Some bacterial preparations have been used as rumen methane (CH4) mitigants, but the effect of spore-forming bacterium Bacillus licheniformis on ruminal methanogenesis is unknown. In this study, twenty-four Dorper crossbred wethers (45.0 ± 1.96 kg body weight) were randomly assigned to 4 dietary treatments (6 animals/treatment): a basal diet (control), or supplemented with 2.5 × 108 (low; L), 2.5 × 109 (medium; M), 2.5 × 1010 (high; H) colony-forming units B. per animal day. Ruminal fermentation characteristics, apparent digestibility and metabolism nutrients gross energy, in vivo emissions measured. The L group had lower ammonia nitrogen concentrations than control (78.5 vs. 100.8 mg/L; P = 0.001). Dietary supplementation enhanced dry matter, organic N, neutral detergent fiber (P
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