Histological Characteristics of the Endometrium and its Affecting Factors in Dairy Cattle <i>(Bos taurus)</i> on Embryo Transfer Day

Abstract In cows embryo transfer occurs on the 7 th day of oestrous cycle. Embryo survival and successful pregnancy depend many factors, including early interaction between endometrium. Therefore, aim our research was to describe histo-morphological characteristics endometrium in donor recipient obtaining day, respectively (7 oestrus cycle). addition, progesterone oestradiol levels, ipsilateral contralateral corpus luteum, animal age, lactation number days postpartum were determined. The results study revealed a significant difference endometrial gland cell size, vacuolisation glandular epithelium cytoplasm, stromal oedema cows. However, these parameters related only level blood, no other investigated factors this study.