文档介绍：泌乳奶牛营养模型研究进展
易渺熊本海基金项目:973计划资助项目(2011CB100800)
*通讯作者:熊本海(1963~),研究员,主要从事反刍动物营养模型化技术及饲料数据路研究。
杨亮
中国农业科学院北京畜牧兽医研究所,动物营养学国家重点实验室,北京 100193
摘要:本文从分析动物营养模型化的优势及其研究进展入手,着重描述了泌乳奶牛的养分代谢与转化的典型模型研究进展:主要包括干物质采食量模型、荷斯坦奶牛的泌乳曲线模型、瘤胃挥发性脂肪酸的产生与吸收模型、小肠氨基酸吸收模型、饲料中脂肪酸代谢与转化定量模型、乳腺代谢及乳成分产量及浓度的定量计算模型等。文中所涉及的模型具有的共同特点是与日粮的成分特性或奶牛的泌乳特性建立了关联,可通过模型来预测生产。模型化研究也为揭示日粮养分到牛奶产品的转化、调控等生理过程,提供了新的研究方法。
关键字:泌乳奶牛;营养;代谢;模型化研究
Research Advances of Nutrition Models in Lactation Dairy Cows
YI Miao XIONG Benhai* YANG Liang
Institute of Animal Sciences, Chinese Academy of Agriculture Sciences, Beijing, 100193
Abstract: This article reviewed the advantages and the development of animal nutrition modeling research, especially metabolic models of lactation dairy cow, including the models of dry matter intake, raw milk yield, production and absorption of ruminal volatile fatty acids, absorption of intestinal amino acids, metabolism and conversion of dietary fatty acids, metabolism of mammary gland and position calculation. mon characteristic of the models mentioned in this paper is that these models are associated with the features of feed or lactation, thus they can be used to predict animal production. Modeling research provided new approaches to clarify the physiological process that feed convert into milk.
Keywords: lactation cow; nutrition; metabolism; modeling research
近10年来我国奶业高速增长,已成为国民经济的重要组成部分,为改善国民膳食