犊牛早期(3月龄)断奶生长发育情况分析

目的]探索犊牛早期(3月龄)断奶的可行性,为推广犊牛早期(3月龄)断奶技术提供依据,增加养殖企业的经济效益成本。方法]试验选取出生后3月龄的西门塔尔犊牛,进行断奶饲养,测量断奶后不同日龄的体重及体尺指标,分析其生长发育情况,并对体重及体尺进行相关性分析。结果]西门塔尔犊牛断奶后增重快速,断奶后90天,犊牛平均体重达到269.67kg,断奶后平均总增重达到101.54kg,全程日均增重为1128.22g。断奶后90天与断奶后30天比较,体斜长、体高、胸宽、胸深、胸围、腹围、臀围均呈现增加的趋势,其中增长较快的是腹围,其次是胸围,分别增加了19.0cm,14.67cm。体重与体斜长、体高、胸宽、胸深、胸围、腹围、臀围均呈正相关,其中体重与体斜长、体高、胸深、胸围、腹围呈极显著相关(p<0.01)。结论]犊牛早期(3月龄)断奶后犊牛生长发育情况较好,犊牛早期(3月龄)断奶具有较强的可行性,可大范围推广。

Analysis of growth and development of calvesat early weaning (3 months of age)

Objective] In order to explore the feasibility of early weaning of calves (at 3 months of age), to provide a basis for promoting early weaning technology of calves (at 3 months of age), and to increase the economic benefit cost of breeding enterprises.SMethod] Three months after birth, Simmental calves were weaned and fed. Their body weight and body size were measured at different days of age after weaning, and their growth and development were analyzed. The correlation between body weight and body size was analyzed.SResults] The weight gain of Simmental calves was rapid after weaning. At 90 days after weaning, the average weight of calves reached 269.67kg, the average total weight gain after weaning reached 101.54kg, and the average daily weight gain during the whole process was 1128.22g.SCompared 90 days after weaning with 30 days after weaning, body oblique length, body height, chest width, chest depth, chest circumference, abdominal circumference and hip circumference all showed an increasing trend, among which abdominal circumference increased faster, followed by chest circumference, which increased 19.0cm and 14.67cm.SBody weight with oblique length, body height, chest width, chest depth, chest circumference, abdominal circumference and hip circumference had positive correlation. Body weight with oblique length, body height, chest depth, chest circumference and abdominal circumference had significantly positive correlation (p <0.01).SConclusion] The growth and development of calves are better after early weaning (3 months of age), and early weaning of calves (3 months of age) has strong feasibility and can be widely promoted.