放牧加补饲条件下短角牛生长发育规律研究

目的]为了探讨短角牛的生长发育规律及体重与各体尺间的相关性，方法]对放牧加补饲条件下短角牛的体重、体尺进行测定，对所测定数据进行分析。结果]结果表明：短角牛体重、体尺的变化随着月龄增加逐渐增加；短角牛具有早期生长发育快的特点，公牛、母牛体重从出生到6月龄时达到绝对生长高峰，日增重分别达到1 093.30 g和973.64 g；公牛、母牛体重的相对生长曲线较一致，整条曲线大致呈下降趋势；生长发育阶段体重和体尺的相关性与性别、月龄有关。结论]应注重短角牛早期的饲养管理，短角牛公牛的营养水平应高于母牛。

Research on Growth and Development of short horn cattlet Raising under the Mode of Grazing plus Supplementary Feeding

Abstract: Objective] In order to explore the growth and development law of short horn cattle and the correlation between body weight and body size, Methods] The body weight and body size of short horn cattle were measured under the condition of grazing and supplementary feeding, and the measured data were analyzed. Results] The results showed that the changes of body weight and body size of short horn cattle gradually increased with the increase of month age; Short horn cattle have the characteristics of rapid growth and development in early stage. The weight of bulls and cows reaches the absolute growth peak from birth to the age of 6 months, and the daily weight gain reaches 1093.30 g and 973.64 g respectively; The relative growth curve of bull and cow weight was relatively consistent, and the whole curve showed a downward trend; The correlation between body weight and body size at growth and development stage is related to gender and month age. conclusion] attention should be paid to the early feeding and management of short horn cattle.