放牧对乳成分和乳产品感官品质影响的研究进展

doi:10.16431/j.cnki.1671-7236.2020.10.018

摘要/Abstract

摘要： 集约化养殖提高了牧场奶牛的生产效率，其生产过程中动物福利、环境保护以及产品质量等议题也逐渐引起消费者的关注。放牧养殖将户外放牧和牧草采食作为养殖模式的评判标准，其产品正逐渐受到欧美等发达国家消费者的青睐。饲料中的优质牧草是影响乳成分及其乳制品品质的主要因素之一，牧草中较高的纤维含量维持了瘤胃健康，较高的不饱和脂肪酸提高了乳脂中不饱和脂肪酸的比例，丰富的可降解蛋白提供了乳蛋白的合成原料，并且牧草中脂肪酸、氨基酸、碳水化合物和其他营养物质在奶牛体内的代谢影响了牛奶以及乳制品的感官品质。作者重点关注一些国家放牧养殖的实际状况和标准要求，及其与有机养殖的差异对比，并分析放牧养殖和全混合日粮喂养条件下饲料成分差异对奶牛瘤胃代谢的影响，以及由此造成的牛奶脂肪、蛋白成分和感官指标等方面的差异。

关键词: 放牧; 牛奶; 蛋白; 脂肪; 感官品质

Abstract: With the development of intensive cultivation in dairy cows,the production efficiency of dairy farms has been improved.However,issues such as animal welfare,environmental protection and product quality of dairy farm have received more attention.As judging criteria in the pattern,outdoor grazing and grass intake necessary in grass-fed farming,and its products are gradually being favored by consumers in developed countries,such as Europe and the United States.The effect of grass-fed on milk and dairy products mainly depend on the quality of forage grass.The high fiber content in forage grass maintains rumen health,high unsaturated fatty acids increase the proportion of unsaturated fatty acids in milk fat,and rich degradable proteins promote milk protein synthesis.The metabolism of fatty acids,amino acids,carbohydrates and other nutrients from forage in dairy cows may affect the sensory quality of milk and dairy products.This review focused on the actual situation and standard requirements of grass-fed in some countries,and their differences compared with organic farming,and analyzed the effects of feed composition differences on rumen metabolism of dairy cows under grazing farming and total mixed diet feeding conditions,as well as resulting differences in milk fat,protein and sensory indicators.

Key words: grass-fed; milk; protein; fat; sensory qualities

中图分类号:

S823.9⁺1

杨晋辉, 王孟辉, 曹静, 胡鹏丽, 李洪亮, 高飞, 钱文涛. 放牧对乳成分和乳产品感官品质影响的研究进展[J]. 中国畜牧兽医, 2020, 47(10): 3193-3202.

YANG Jinhui, WANG Menghui, CAO Jing, HU Pengli, LI Hongliang, GAO Fei, QIAN Wentao. Advance on Effects of Grass Feeding on Milk Composition and Sensory Quality of Dairy Products[J]. China Animal Husbandry and Veterinary Medicine, 2020, 47(10): 3193-3202.

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