畜牧兽医杂志2025，Vol.44Issue(6)：7-11,38,6.DOI:10.7606/j.issn.1004-6704.2025.06.002
不同饲养管理模式对亚丁牦牛犊牛生长性能和母牛繁殖性能的影响
Effects of Different Feeding Management Regimes on Growth Performance of Yak Calves(Bos grunniens)and Reproductive Efficiency of Dams in Yading
摘要
Abstract
This study aimed to investigate the effects of different feeding management modes on the growth performance of Yading yak calves during lactation and the reproductive performance of their dams.Sixty healthy Yading yak calves aged 3-4 months with similar body weights were randomly allocated to a housing-fed group or a grazing group(30 calves per group).Yak calves in the housing group were abruptly weaned and transferred to a low-altitude base for controlled housing system,while those in the grazing group remained with their dams under natural grazing conditions.Morphometric parameters(withers height,body length,and chest circumference)were recorded on days 1,120,and 270 of the trial to evaluate growth performance.Additionally,the postpartum estrus initiation date and con-ception status of dams were tracked to calculate reproductive rates and postpartum anestrus intervals intervals.The results revealed that on day 1,yak calves in the housing-fed group exhibited significantly smaller chest circumferences(P＜0.05)and highly significantly lower body weights(P＜0.01)compared to the grazing group,while their withers height was significantly greater(P＜0.05).By day 120,all growth parameters(body weight,withers height,body length,and chest circumference)of the housing-fed group were lower than those of the grazing group,with chest circumference re-maining significantly smaller(P＜0.05).However,by day 270,all growth indices in the housing-fed group surpassed those of the grazing group,with body weight and body length showing highly significant increases(P＜0.01).Further-more,the survival rate of calves in the housing-fed group(80.00％)markedly exceeded that of the grazing group(13.33％),and the postpartum estrus interval of dams in the housing-fed group was significantly shorter than that of the grazing group(P＜0.01).These findings demonstrate that concentrated weaning with supplementary feeding enhances the growth and development of yak calves and improves the reproductive efficiency of dams.关键词
亚丁牦牛/犊牛/生长性能/繁殖性能Key words
Yading yak/yak calves/growth performance/reproductive efficiency分类
农业科技引用本文复制引用
毛旭东,邓启红,毛进彬,沈常欢,吴陆处..不同饲养管理模式对亚丁牦牛犊牛生长性能和母牛繁殖性能的影响[J].畜牧兽医杂志,2025,44(6):7-11,38,6.基金项目
省级科技计划专项因素法转移支付资金(220018) （220018）
