南北方牧场围产牛生产性能的月份变化规律比较研究
Monthly Variation in Production Performance of Perinatal Cows in Southern and Northern Farms
贾浩滨 1邵凯 1王鹏宇 2陈凯 2王典 2齐景伟 1徐明3
作者信息
- 1. 内蒙古农业大学动物科学学院,内蒙古呼和浩特 010010
- 2. 内蒙古优然牧业有限公司,内蒙古呼和浩特 015200
- 3. 内蒙古农业大学动物科学学院,内蒙古呼和浩特 010010;内蒙古优然牧业有限公司,内蒙古呼和浩特 015200
- 折叠
摘要
本试验旨在研究不同月份对南北方牧场围产牛采食量、助产率、初乳质量及犊牛初生重、犊牛接产成活率的影响规律,选择19个北方牧场和8个南方牧场,收集各项指标分析经产围产牛在不同地域的月份变化规律.结果表明,相比北方牧场,南方牧场6～9月份干物质采食量显著下降(P＜0.05),3～8月份助产率显著升高(P＜0.05),但各月份初乳产量与初乳合格率均无显著变化(P＞0.05).南方牧场犊牛初生重在7、8月份最低(P＜0.05),夏季比冬季低3 kg,且低于北方牧场同期数据(P＜0.05),其它月份数据在南北方牧场差异不显著(P＞0.05).北方牧场犊牛接产成活率随季节有明显变化规律(P＜0.05),且呈夏季高、冬季低的特点.综上所述,南方牧场围产牛干物质采食量、北方牧场犊牛接产成活率、南北方牧场围产牛助产率与犊牛初生重均有明显月份变化规律,北方牧场围产牛干物质采食量、南方牧场犊牛接产成活率、南北方牧场初乳产量和品质均不受月份变化影响.
Abstract
The aim of this experiment was to investigate the impact of different months on the feed in-take,calving rate,colostrum quality,calf birth weight,and calf survival rate of perinatal cows in northern and southern regions.19 northern farms and 8 southern farms were selected,and various indicators were collected and analyzed to study the monthly variations in perinatal cows in different regions.The results in-dicated that compared to northern farms,the dry matter intake of cattle in southern farms decreased sig-nificantly from June to September(P＜0.05),while the calving rate increased significantly from March to August(P＜0.05).However,there were no significant changes in colostrum yield and colostrum quality in different months(P＞0.05).The birth weight of calves in southern farms was lowest in July and Au-gust(P＜0.05),being 3 kg lower in summer than in winter and lower than the corresponding data in northern farms(P＜0.05).Data for other months showed no significant differences between northern and southern farms(P＞0.05).The calf survival rate in northern farms showed a clear seasonal variation pat-tern(P＜0.05),with higher rates in summer and lower rates in winter.In summary,there are significant monthly variations in feed intake of cattle in southern farms,calf survival rate in northern farms,calving rate and calf birth weight in both northern and southern farms.Feed intake of cattle in northern farms,calf survival rate in southern farms,colostrum yield and quality in both northern and southern farms are not influenced by monthly variations.
关键词
南北方牧场/围产牛/繁殖性状/采食量/初乳质量Key words
farms in the north and south/perinatal cattle/reproductive traits/feed intake/colostrum quality引用本文复制引用
基金项目
内蒙古重大专项(2020ZD0004)
2022年陕西省农业科技创新驱动项目(陕农计财[2022]29号-107)
出版年
2024
国家科技期刊平台
NSTL
万方数据