2.synchronization of oestrus;
5.having one estrous cycle per year.
6.The next estrus was delayed.
7.The average estrous period of ewe is20.8±1.47days,estrus duration48.3±15.4hours.
母羊
发情周期为20.8±1.47d,
发情持续期48.3±15.4h;
8.To use endocrine to induce sexual desire or labour.
9.The results showed as follows:1)It was applied synchronized estrus in Boer goats and Tangshan milk goats to the CIDR+PMSG and CIDR+FSH groups respectively,which the percentage of effective estrus is 75 % and 73 % respectively.
试验结果表明:CIDR+PMSG组对布尔山羊同期
发情,有效
发情率为75%; CIDR+FSH组对唐山奶山羊同期
发情,有效
发情率为73%;
10.Environment can sometimes alter the rut age of an animal