Fertility in postpartum dairy cows in winter or summer following estrus synchronization and fixed time AI after the induction of an LH surge with GnRH or hCG

Author： Rensis F.D.   Marconi P.   Capelli T.   Gatti F.   Facciolongo F.   Franzini S.   Scaramuzzi R.J.  

Publisher： Elsevier

ISSN： 0093-691X

Source： Theriogenology, Vol.58, Iss.9, 2002-12, pp. : 1675-1687

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