高产奶牛产后护理关键节点控制及对受胎率的影响
Control of Key Points of Postpartum Care in High-yielding Dairy Cows and Its Effect on Pregnancy Rate
刘长彬 1倪建宏 1卢守亮 1张振良 1傅祥伟 2卢春霞3
作者信息
- 1. 新疆农垦科学院畜牧兽医研究所/省部共建绵羊遗传改良与健康养殖国家重点实验室,新疆 石河子 832000
- 2. 中国农业大学动物科技学院,北京 100083
- 3. 新疆农垦科学院畜牧兽医研究所/省部共建绵羊遗传改良与健康养殖国家重点实验室,新疆 石河子 832000;长江师范学院现代农业与生物工程学院,重庆 408100
- 折叠
摘要
本试验旨在研究奶牛产后子宫复旧的生理变化规律,制定出一套产后护理技术程序,能够促进产后奶牛子宫复旧,缩短产后复旧时间和产犊间隔,提高高产奶牛的受胎率.本试验共分为4组,分别为奶牛产后监护组与自然恢复组、无抗治疗组与PGF2α治疗组、繁殖障碍监护组与对照组、妊娠检测直肠把握组与B超组.结果表明:(1)奶牛产后监护组的淘汰率显著低于自然恢复组,而妊娠率明显高于自然恢复组,且差异显著(P＜0.05);(2)因乳品抗生素残留的存在,试验中采用了无抗组和激素处理组,产后奶牛的两种处理方法均取得较为理想的效果,但是两组之间的差异不显著(P＞0.05);(3)将产后奶牛护理程序应用到大群试验中,监护群的受胎率为90.8%,极显著高于对照群(P＜0.05).(4)分别对复旧后的奶牛进行配种,在配种后30d和45d,采用B超法和直肠把握法进行妊娠检测,在30d时,两种妊娠检测方法差异显著(P＜0.05),在45d时,两种妊娠检测方法之间没有差异性,都可以达到100%的妊娠检测准确性.综上所述,在本试验条件下,在奶牛产后的关键时间节点进行护理是十分必要的,可以达到早配种、早妊娠、缩短产犊间隔,增加高产奶牛养殖的经济效益和生态效益.
Abstract
The purpose of this experiment was to study the physiological changes of postpartum uterine rejuvenation of dairy cows,and to develop a set of postpartum nursing technical procedures,which can promote postpartum uterine rejuvenation of dairy cows,shorten postpartum rejuvenation time and calving interval,and improve the conception rate of high-yield dairy cows.This study was divided into 4 groups,which were postpartum monitoring group and natural recovery group,non-anti-treatment group and PGF2α treatment group,reproductive disorder monitoring group and control group,pregnancy detection rectal control group and B ultrasound group.The results showed as follows:(1)The elimination rate of PGF2α postpartum monitoring group was significantly lower than that of natural recovery group,and the pregnancy rate was significantly higher than that of natural recovery group,and the difference was significant(P<0.05);(2)Due to the existence of antibiotic residues in dairy products,the experimental study was conducted in the no-antibiotic group and the hormone-treated group.Both of the two treatment methods for postpartum cows achieved satisfactory re-sults,but the difference between the two groups was not significant(P>0.05);(3)The fertilization rate of the monitoring group was 90.8％,which was significantly higher than that of the control group(P<0.05).(4)The restored cows were inbred respectively.At 30 and 45 days after inbreeding,B-ultrasound method and rectal grasp method were used for pregnancy detection.At 30 days,there was a significant difference between the two pregnancy detection methods(P<0.05);at 45 days,there was no difference between the two pregnancy detection methods,and both could achieve 100％accuracy of pregnancy detection.To sum up,under the conditions of this experiment,it is very necessary to carry out nursing at the critical time node of postpartum dairy cows,which can achieve early.
关键词
高产奶牛/产后护理/关键节点/受胎率Key words
High-yield dairy cows/Postpartum care,Key node/Pregnancy rate引用本文复制引用
基金项目
兵团科技合作项目(2023AB009-01)
兵团农业GG项目()
出版年
2023
国家科技期刊平台
NSTL
维普
万方数据