DIFFERENCES IN THE INTAKE OF ROUGHAGE BETWEEN COWS OF 3 BREEDS FED 2 LEVELS OF CONCENTRATES ACCORDING TO MILK-YIELD

被引：8

作者：

OLDENBROEK, JK

机构：

来源：

LIVESTOCK PRODUCTION SCIENCE | 1979年 / 6卷 / 02期

关键词：

D O I：

10.1016/0301-6226(79)90016-2

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

Differences in the decrease of roughage intake as the result of an increased intake of concentrates between Holstein Friesian, Dutch Friesian and Dutch Red and White cows were studied with 12 animals of each breed between the 7th and 14th weeks of lactation. In each of the 2 months of the experiment (change-over design) the animals were offered two levels of concentrates: 1 or 2 kg for each 3 kg of milk (4% fat) produced in the 6th week of lactation. The decreases in roughage intake for each supplementary kg d.m. of concentrates consumed were 664, 606 and 597 g d.m. for the Holstein Friesians, Dutch Friesians and Dutch Red and Whites, respectively. The between-breed differences were not significant. © 1979.

引用

页码：147 / 151

页数：5

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