3Zicarelli L,De Filippo C,Francillo M,et al.Influence of insemination technique and ovulation time on fertility percentage in synchronized buffaloes.Proc.[J].Fifth world buffalo congress,Caserta,Italy,13~16,October 1997:732-734.
4Moioli B M,Napolitano F,Puppo S,et al.Pattern of estrous,time of LH release and ovulation and effects of time of artificial insemination in Mediterranean buffalo cows[J].Anim.Sci.,1998,66:87-91.
5Ohashi O M.Estrous detection in buffalo cow[J].Buffalo J,1994; (Suppl.2):61-64.
6Baruselli P S.Control of follicular development applied to reproduction Biotechnologies in buffalo[J].In:Proc Ⅰ Congresso Nazionale sull'allevamento del bufalo; 2001.p.128-46.