TY - SER AU - Alnimer,M.A. AU - Alfataftah,A.A. AU - Ababneh,M.M. TI - A comparison of fertility with a cosynch protocol versus a modified osvsynch protocol which included estradiol in lactating dairy cows during the summer season in Jordan KW - GADO LEITEIRO KW - FERTILIDADE ANIMAL KW - ESTRADIOL ER -