国产苜蓿添加量对当地生鲜乳营养品质的影响研究

发布时间：2018-02-24 06:12

本文关键词： 国产苜蓿生鲜乳营养品质乳蛋白干物质脂肪酸组成　出处：《中国畜牧兽医》2017年05期 　论文类型：期刊论文

【摘要】：国产苜蓿供应当地的奶牛养殖场具有明显的价格优势,但是目前合理且切实可行的苜蓿添加量及其对生鲜乳营养品质的影响仍缺乏科学的研究。本试验以黑龙江省大庆市种植的苜蓿为原料,在当地9个规模化奶牛养殖场开展了为期一年的苜蓿饲喂试验,分析苜蓿不同添加量对生鲜乳品质的影响。结果显示,与未添加苜蓿的养殖场相比,添加3kg/d国产苜蓿不能显著改善生鲜乳中的营养成分(P0.05)。当日粮中苜蓿添加量达到6kg/d时,生鲜乳中粗蛋白质(CP)及干物质(DM)含量显著提高(P0.05),但对脂肪及乳糖含量无显著影响(P0.05)。且能够显著增加不饱和脂肪酸的含量(P0.05),改善生鲜乳的脂肪酸组成。说明将各养殖场目前常采用的3kg/d添加量提高到6kg/d有助于改善生鲜乳的营养品质。
[Abstract]:Domestic alfalfa has obvious price advantages in supplying local dairy cattle farms. However, there is still a lack of scientific research on the rational and feasible alfalfa addition and its effect on the nutritional quality of fresh milk. In this experiment, alfalfa planted in Daqing City, Heilongjiang Province, was used as raw material. A one-year alfalfa feeding experiment was conducted in 9 local dairy cattle farms, and the effects of alfalfa supplementation on the quality of fresh milk were analyzed. The results showed that alfalfa was different from alfalfa farms. Addition of 3 kg / d alfalfa could not significantly improve the nutritional composition of fresh milk. When alfalfa was added for 6 kg / d, the nutrient content of alfalfa in raw and fresh milk could not be significantly improved by adding 3 kg / d alfalfa on the same day. The contents of crude protein (CPP) and dry matter (DMM) in fresh milk were significantly increased, but the contents of fat and lactose were not significantly affected. The contents of unsaturated fatty acids were significantly increased and the fatty acid composition of fresh milk was improved. Increasing the dosage of 3 kg / d to 6 kg / d is helpful to improve the nutritional quality of fresh milk.
【作者单位】：农业部食物与营养发展研究所;中国农业科学院北京畜牧兽医研究所;
【基金】：农业部《2015年农产品质量安全监管(生鲜乳)项目》(J464)
【分类号】：S823.5

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