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丙酸镁对西门塔尔牛豆粕营养物质瘤胃降解率的影响 被引量:1

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摘要 选用4头年龄3.5岁、体况良好、体重500kg的中国西门塔尔牛阉牛。采用4×4拉丁方设计,研究日粮添加丙酸镁(100g/d)、丙酸(87g/d)和氧化镁(24g/d)对豆粕干物质(DM)、有机物质(OM)和粗蛋白质(CP)瘤胃降解率的影响。结果表明:日粮中添加丙酸镁、丙酸和氧化镁后对豆粕DM、OM和CP瘤胃有效降解率(P)无显著影响(P>0.05);丙酸镁组豆粕DM和OM快速降解部分(a)较对照组和丙酸组显著提高(P<0.05),丙酸镁组豆粕CP快速降解部分(a)较对照组和氧化镁组显著提高(P<0.05);丙酸组豆粕CP慢速降解部分(b)较对照组和氧化镁组显著降低(P<0.05),氧化镁组豆粕CP慢速降解部分(b)较丙酸镁组显著提高(P<0.05);丙酸组豆粕CP的降解常数(c)较对照组和丙酸镁组显著提高(P<0.05)。丙酸镁提高了豆粕营养物质的瘤胃快速降解部分,但对有效降解率无显著影响。
出处 《饲料工业》 北大核心 2009年第7期27-29,共3页 Feed Industry
基金 "十一五"国家科技支撑计划项目(2007BAD5B04)资助
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参考文献9

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