Determination of Late Embryonic Death Rates by Pregnancy Associated Glycoproteins and Rectal Examination in Cows

Abstract

In this study, it was aimed to make the pregnancy diagnosis with the determination of glycoproteins (PAG) associated pregnancy after insemination in the cows, and to determine the late embryonic mortality rates. As material, 2919 head cows in different races and ages were used in farms and family businesses in Kahramanmaraş province. Milk sample was taken on the 25–30 day after artificial insemination from cows. The level of PAG in these milk samples was analyzed by using the Milk Pregnancy Test Kit for cows. This kit was used according to the manufacturer's instructions. During the study, it was determined that 1660 cows were pregnant, 188 were suspicious and 1071 were not pregnant. The pregnant animals were examined by rectal palpation on the 50th day when their pregnancy was continued. Controls performed on the 50th day of pregnant cows showed that 1623 cows were still pregnant and 37 cows had late embryonic deaths. As a result, early pregnancies can be accurately detected by measuring the level of PAG in the cow's milk using the Milk Pregnancy Test Kit. It was concluded that late embryonic mortality rates could be detected and that this analysis could be used routinely. © 2020