摘要
本文以不同遗传基础的毛用、毛肉兼用和肉毛兼用型生长绵羊为对象,解析毛纤维与体组织之间(毛一体)营养分配机制,测定毛纤维与体组织沉积对机体摄入养分(主要对代谢能)的利用效率,建立营养需要估测方程,在此基础上提出绵羊生长期动态营养需要体系的初步思路。
In this paper,the mechanism of nutrient partition between wool and body tissues were analysed in growing sheep from three genetically different types:Chinese Merino as wool sheep,Northeast Finewool sheep as wool—mutton sheep and Longwool Crossbred as mutton-wool sheep.The efficiencies of use of absorbed nutrients both for body fat and protein re- tention and for wool growth were estimated.A multivariate regression equation used to calculate nutrient requirements was established,On the basis of the analysis as above a tentative system about dynamic nutrient requirements for growing sheep was designed.
关键词
生长绵羊
毛——体营养分配
养分利用效率
动态营养需要
多元分析
Growing sheep
Nutrient partition between wool and body tissues
Nutrient utilization
Dynamic nutrient requirement
Multivariate analsis
