DYNAMICS OF SEX STEROID HORMONES, CORTISOL AND TRIIODOTHYRONINE IN DOGS DURING THE ESTROUS CYCLE
DOI:
https://doi.org/10.37000/abbsl.2022.104.03Keywords:
progesterone, estradiol, cortisol, triiodothyronine, estrus, female dogsAbstract
The article presents the resulting data of study the relationship of estradiol, progesterone, cortisol and triiodothyronine in blood serum in the dynamics of their content during the estrous cycle in female dogs. Blood serum was used for the study, blood was collected from the lateral subcutaneous vein of the forearm on 1, 5, 10, 15, 20, 25 days of the estrous cycle. The analysis of the concentration of progesterone in the blood serum of bitches had regular changes during estrus. An increase in the concentration of cortisol in the blood serum during the first 10 days of estrus indicates that the changes occurring in the body during the cycle are stressful. The obtained data on the dynamics of estradiol during estrus correspond to other studies. Specifically, they indicate that during estrus, the estrogen content drops, and the progesterone level begins to rise.
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