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首页> 外文期刊>Animal Feed Science and Technology >Influences of flavomycin, ropadiar, and saponin on nutrient digestibility, rumen fermentation, and methane emission from sheep
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Influences of flavomycin, ropadiar, and saponin on nutrient digestibility, rumen fermentation, and methane emission from sheep

机译：黄霉素，ropadiar和皂苷对绵羊养分消化率，瘤胃发酵和甲烷排放的影响

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This study focused on the effects of three additives given together with a hay/concentrate-based diet on nutrient digestibility, rumen fermentation, and methane emission from sheep. The basal diet consisted of 1.29kg mixed hay and 0.43kg concentratemixture based on dry matter (DM). Treatments consisted of control (no additive), flavomycint (250mg/d), ropadiar from an oregano extract (250mg/d), and saponin in the form of a yucca schidigera extract (170mg/d). Results indicated that intake and digestibility were unaffected by treatments (P>0.05). The NH-N concentration of rumen liquor was lower (P<0.05) for additive treatments versus the control treatment. Higher concentrations of volatile fatty acid (VFA) were observed in the saponin (75.8mmol/L) and ropadiar (73.1mmol/L) treatments. The proportion of individual fatty acid of rumen liquor was unchanged, whereas lower ratio of acetate to propionate in the saponin treatment was observed (P<0.05). The average methane production expressed on digestedorganic matter (OM) and neutral detergent fiber (aNDFom) basis were decreased by approximately 3.3 and 12.0g/kg, respectively in saponin, and 4.2 and 11.9g/kg in ropadiar treatment compared to the control. Methane production was positively correlated with the concentrations of NH-N, and negatively correlated with total VFA and the proportion of propionate of rumen liquor (P<0.05). The study found that saponin and ropadiar could have the potential to reduce rumen methanogenesis in sheep.
机译：这项研究集中于三种添加剂以及以干草/浓缩饲料为主的日粮对养分消化率，瘤胃发酵和绵羊甲烷排放的影响。基础日粮由1.29千克混合干草和0.43千克基于干物质（DM）的浓缩饲料组成。处理包括对照组（无添加剂），黄霉素（250毫克/天），牛至提取物的罗巴地丁（250毫克/天）和丝兰提取物形式的皂苷（170毫克/天）。结果表明，摄入量和消化率不受处理的影响（P> 0.05）。与对照相比，添加处理的瘤胃液的NH-N浓度较低（P <0.05）。皂素（75.8mmol / L）和ropadiar（73.1mmol / L）处理中观察到较高浓度的挥发性脂肪酸（VFA）。瘤胃液中单个脂肪酸的比例没有变化，而皂苷处理中乙酸与丙酸酯的比例较低（P <0.05）。与对照组相比，皂素的平均消化甲烷（OM）和中性洗涤剂纤维（aNDFom）表示的平均甲烷产量分别降低了约3.3和12.0g / kg，而角膜固定处理的甲烷平均产量分别降低了4.2和11.9g / kg。甲烷的产生与NH-N的浓度呈正相关，与总的VFA和瘤胃液中丙酸的比例呈负相关（P <0.05）。研究发现，皂苷和ropadiar可能具有减少绵羊瘤胃甲烷生成的潜力。

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