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首页> 外文期刊>Tropical Animal Health and Production >Effect of yeast-fermented de-hulled rice on in vitro gas production, nutrient degradability, and rumen fermentation
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Effect of yeast-fermented de-hulled rice on in vitro gas production, nutrient degradability, and rumen fermentation

机译：酵母发酵脱壳米对体外气体生产，营养降解性和瘤胃发酵的影响

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摘要

The aim of this experiment was to test the effect of yeast-fermented de-hulled rice (YDR) levels of protein-rich feed with different kinds of roughages on in vitro gas production, nutrient degradability, and rumen fermentation. The treatments were randomly assigned according to a 2 x 4 factorial arrangement in a completely randomized design (CRD). The two experimental factors were comprised of two roughages (R) (untreated rice straw (RS) and sweet grass hay (SGH)) and four ratios of roughage to yeast-fermented de-hulled rice (R:YDR) (100:0, 75:25, 50:50, and 25:75). Thus, there were 8 treatment combinations. The results revealed that the interaction between R and R:YDR ratios influenced on the gas production rate constant for the insoluble fraction ratio (c) (P < 0.01). The in vitro dry mater degradability (IVDMD) was improved by SGH and R:YDR ratios (P < 0.05). Supplementation of YDR with both of roughage sources (RS and SGH) increased propionate (C3) (P < 0.05) and total VFA production (P < 0.01); both factors showed interactive effects on rumen methane production (P < 0.01). Moreover, bacterial population was significantly increased by the SGH:YDR ratios (P < 0.05). Therefore, it could be summarized that supplementing YDR, an enriched protein source with SGH:YDR ratio at 50-75:50-25 ratio significantly enhanced nutrient degradability and in vitro rumen fermentation efficiency.
机译：该实验的目的是测试酵母发酵的去壳水稻（YDR）水平与不同种类的粗饲料对体外气体生产，养分可降解性和瘤胃发酵的影响。根据完全随机设计（CRD），根据2×4因子安排随机分配治疗。两种实验因素由两种粗糖浆（R）（未处理的稻草（RS）和甜草干草（SGH））和玉米酵母发酵脱壳稻米（R：YDR）的四个比例组成（RESTEAD脱巢米（R：YDR）（100：0， 75:25,50:50和25:75）。因此，有8种治疗组合。结果表明，R和R之间的相互作用：对不溶性级分比（C）的气体生产率恒定影响的YDR比率（P <0.01）。通过SGH和R：YDR比率改善了体外干燥母体可降解性（IVDMD）（P <0.05）。用粗饲料来源（RS和SGH）补充YDR增加丙酸盐（C3）（P <0.05）和总VFA生产（P <0.01）;这两个因素对瘤胃甲烷生产表现出互动影响（P <0.01）。此外，SGH的细菌群显着增加：YDR比率（P <0.05）。因此，可以概述补充YDR，具有SGH的富含蛋白质来源：YDR比率为50-75：50-25比率显着增强了营养降解性和体外瘤胃发酵效率。

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