Content of endogenous hormones in the blood serum of milking breeds bulls-producers in the conditions of Tatarstan region

Relevance and methods. 35 bulls-producers of milking breeds  (holstein of black-and-white paint, holmogorskaya of Tatar type with flow of holstein blood, black-and-white) were inspected in the age 1,8–8 years old in the autumn season in conditions of Tatarstan Republic (Volga region, Povolzhye). The subject of the work is to research the concentration of endogenous hormones (testosterone, estradiol, thyroxin) and their precursor — cholesterol in the blood serum in the day of semen collection and their intercommunication reproductive function.

1. Abilov, A.I., Amerkhanov Kh.A., Eskin G.V., Fedorova E.V., Zhavoronkova N.V., Kombarova N.A., Varennikov M.V. Endogenous hormones in sire bulls in a new generation and their relationship with the titer of autoimmunity. Animal science. 2013;(9):25-28. (In Russ.)

2. Aliev, A.A. Metabolism in ruminants. M.: Research Center “Engineer”. 1997. 419 p. (In Russ.)

3. Amerkhanov Kh.A., Abilov A.I., Eskin G.V., Kombarova N.A., Turbina I.S., Fedorova E.V., Varenikov M.V., Gusev I.V. The content of testosterone and cholesterol in the blood serum of bulls producers, depending on the season of the year. Agricultural biology. 2014;(2):59-66. (In Russ.)

4. Gutorova, N.V., Osadchuk L.V., Kleschev M.A. and others. Sperm quality and levels of reproductive hormones in men of the Kemerovo population. Reproduction problems. 2010;(6):86-90. (In Russ.)

5. Zvereva. G.V., Khomin S.P. Gynecological diseases of cows. Monograph. Kiev: Harvest. 1976. 148 p. (In Russ.)

6. Kalinchenko S.Yu., Tyuzikov I.A. Practical andrology. M.: Practical Medicine. 2009. 400 p. (In Russ.)

7. Kozlo N.E., Legoshin G.P. Organization and technique of reproduction of farm animals. Monograph. M.: Kolos. 1979. 176 p. (In Russ.)

8. Milovanov V.K. Reproduction biology and artificial insemination agricultural animals. M. 1962. 696 p. (In Russ.)

9. Reznikov A.G. Sex hormones and brain differentiation. Kiev: Naukova Dumka. 1982. 252 p. (In Russ.)

10. Reznikov A.G., Varga S.V. Antiandrogens. M.: Medicine. 1988. 208 p. (In Russ.)

11. Sverdloff R., Bhasin Sh. Sexual dysfunction in men. Endocrinology. Practice: under. ed. N.M. Avalanche. M., 1999. P.369-392. (In Russ.)

12. Tyuzikov I.A., Kalinchenko S.Yu., Vorslov L.O., Tishova Yu.A. The role of estrogen in the male body. Andrology and Genital Surgery. 2014;(4):8-12. (In Russ.)

13. Schill, VB, Komhair F., Hargreave T. Clinical andrology. M.: GEOTAR-Media. 2011. 800 p. (In Russ.)

14. Chacur, M.G.M., Mizusaki K.T., L.R.A. Filho Gabriel, Oba E., Ramos A.A Seasonal effects on semen and testosterone in Zebu and Taurine bulls. Acta Scientiae Veterinariae. 2013;(41):1110.

15. Fejes I., Koloszar S., Zavaczkiz Z.. et al. Effect of body weight on testosterone, estradiol ratio in oligozoospermie patients. Andrologi archive. 2006. Р.52, 97-102.

16. Gates M.A. R.A.Mekary, G.R. Chiu et al. Sex steroid hormone levels and body composition in men. J Clin Endocrinol Metab. 2013;98(6):2442–2450.

17. Javed M.T., Abrar K., Mumtaz A. Influence of season on seminal plasma testosterone and oestrogen in healthy and abnormal bulls and their relationship with other semen parameters. Veterinary Archive. 2000;70(3):141-149.

18. Jockenhovel F. Male hypogonadism. Auflage-Bremen: UNI-MED. 2004. 188 р.

19. Kozumplik J. The level of plasma testosterone during the prenatal and postnatal period of development in bulls. Acta Vet. Brno. 1981;(50):27-32.

20. Kumanov P., Nandipati K., Tomova A., Agarwal A. Inhibin B is a better marker of spermatogenesis than other hormones in the evaluation of male factor infertility. Fertil. Steril. 2006;86(2):32-338

21. Schneider G., Kirschner M.A., Berkowitz R. and Ertel N.H. Increased estrogen production in obese men. The Journal of Clinical Endocrinology & Metabolism. 1979;48(4):633–638.

22. Wagner R.K. Acta endocrinology. 1978. Р.73.

23. Zumoff B., G.W. Strain, J. Kream et al. Obese young men have elevated plasma estrogen levels but obese premenopausal women do not. Metabolism. 1981;30(10):1011–1014.