期刊论文

Study on the Regulations of Activity and Vaginal Electrical Resistance of Cattle during the Estrous Cycle

中文

畜牧兽医学报

0366-6964

2017

48

7

1221-1228

10.11843/j.issn.0366-6964.2017.07.006

奶牛产业技术体系北京市创新团队项目（bjcystx-ny-3） 国家自然科学基金（31372296） 中国农业科学院科技创新工程“家畜胚胎工程与繁殖创新团队”项目（ASTIP cxgc-ias-06） 石家庄市科学技术研究与发展计划项目（161500332A）

本校为其他机构

准确的发情鉴定与排卵时间预测对确定输精时间具有重要意义。本研究随机选择产后60~90d健康二胎西门塔尔牛与头胎荷斯坦奶牛各10头为试验牛,试验牛同期发情后,采用外部观察与直肠检查确定发情、排卵时间,并使用计步器每30min自动检测牛发情前后及排卵前后的活动量,同时,使用发情排卵仪每4h测定阴道黏液电阻值(简称电阻值)变化。结果表明,间情期电阻值(300±12)Ω显著高于发情期(P

It is important to determine the insemination time by using accurate estrous detection and ovulation prediction.In this study,10 multiparous Simmental cattle and 10 primiparous Holstein cows,which were 60 to 90 days postpartum,healthy and nonpregnant,were used as experiment animals.After estrus synchronization,the oestrus and ovulation time of cattle were detected by observation and rectal examination,and the corresponding activity and vaginal electrical resistance (VER) were measured by using pedometers in an interval of 30 min and estrus ovul...