饲粮中添加籽粒苋对泌乳奶牛瘤胃发酵、血液指标和生产性能的影响
发布时间：2018-12-16 11:32
【摘要】：本试验旨在研究饲粮中添加籽粒苋青贮和干草对泌乳奶牛瘤胃发酵、营养物质表观消化率、血液指标和生产性能的影响。选取产奶量、胎次和泌乳天数等相近的健康荷斯坦奶牛45头,随机分成3组,每组15头牛。对照组粗饲料包括全株玉米青贮、羊草和苜蓿干草,试验Ⅰ组粗饲料使用籽粒苋青贮替代30%玉米青贮,试验Ⅱ组粗饲料使用籽粒苋干草替代30%苜蓿干草。3组饲粮营养水平接近。预试期10 d,正试期60 d。结果表明:1)与对照组相比,试验Ⅰ组能显著提高粗蛋白质(CP)表观消化率、瘤胃液氨态氮(NH_3-N)和血液总氨基酸(T-AA)的含量(P0.05),对其他营养物质表观消化率、血液指标和乳成分影响不显著(P0.05)。2)与对照组相比,试验Ⅱ组的血液T-AA含量显著高于对照组(P0.05),对其他血液指标、瘤胃发酵指标、营养物质表观消化率和乳成分均无显著影响(P0.05)。综上所述,饲粮中添加适量的籽粒苋不会影响奶牛的生产性能,同时会提高牧场经济效益。
[Abstract]:The purpose of this experiment was to study the effects of grain amaranth silage and hay on rumen fermentation, apparent digestibility of nutrients, blood index and production performance of lactating cows. A total of 45 healthy Holstein cows with similar milk yield, birth number and lactation days were randomly divided into 3 groups with 15 cows in each group. The forage of the control group consisted of whole corn silage, Leymus chinensis and alfalfa hay. In group I, seed amaranth silage was used instead of 30% corn silage. The forage of seed amaranth was used to replace 30% alfalfa hay in group 鈪，
本文编号：2382263
[Abstract]:The purpose of this experiment was to study the effects of grain amaranth silage and hay on rumen fermentation, apparent digestibility of nutrients, blood index and production performance of lactating cows. A total of 45 healthy Holstein cows with similar milk yield, birth number and lactation days were randomly divided into 3 groups with 15 cows in each group. The forage of the control group consisted of whole corn silage, Leymus chinensis and alfalfa hay. In group I, seed amaranth silage was used instead of 30% corn silage. The forage of seed amaranth was used to replace 30% alfalfa hay in group 鈪，
本文编号：2382263
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