Title :
The effects of supplemental GnRH on reproductive performance in lactating Holstein dairy cows during the summer and winter.
Author :
C.S. Whisnant استاد راهنما , M. Hockett استاد مشاور , P.W. Farin استاد مشاور
University :
Virginia Polytechnic Institute and state University
Major :
Master of Science )Animal Science(
Keyword :
Progesterone , HEAT STRESS , Pregnancy rates
