Articles | Volume 61, issue 2
Arch. Anim. Breed., 61, 191–195, 2018
Arch. Anim. Breed., 61, 191–195, 2018

Original study 08 May 2018

Original study | 08 May 2018

Age-related changes in testicular parameters and their relationship to thyroid hormones and testosterone in male Murrah buffaloes

Vyankat Gangadhar Jadhav et al.

Related subject area

Subject: Livestock physiology | Animal: Cattle
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Cited articles

Ahmad, E., Ahmad, N., Naseer, Z., Aleem, M., Khan, M. S., Ashiq, M., and Younis, M.: Relationship of age to body weight, scrotal circumference, testicular ultrasonograms, and semen quality in Sahiwal bulls, Trop. Anim. Health Prod., 43, 159–164, 2011. 
Amann, R. P. and Almquist, J. O.: Reproductive Capacity of Dairy Bulls: VIII. Direct and Indirect Measurement of Testicular Sperm Production, J. Dairy Sci., 45, 774–781, 1962. 
Ariyaratne, H. B., Mendis-Handagama, S. M., and Mason, J. I.: Effects of triiodothyronine on testicular interstitial cells and androgen secretory capacity of the prepubertal Rat, Biol. Reprod., 63, 493–502, 2000. 
Bailey, T. L., Hudson, R. S., Powe, T. A., Riddell, M. G., Wolfe, D. F., and Carson, R. L.: Caliper and ultrasonographic measurements of bovine testicles and a mathematical formula for determining testicular volume and weight in vivo, Theriogenology, 49, 581–594, 1998. 
Bates, J. M., St. Germain, D. L., and Galton, V. A.: Expression profiles of the three iodothyronine deiodinases, D1, D2, and D3, in the developing rat, Endocrinol., 140, 844–851, 1999. 
Short summary
Developmental changes in testicular parameters and their association with plasma triiodothyronine (T3), thyroxine (T4), and testosterone in male Murrah buffaloes were determined. Plasma T4 and testosterone increased significantly with age. Plasma T4 levels were positively correlated with testicular parameters and plasma testosterone, whereas plasma T3 was not associated with either. This study demonstrated the developmental and steroidogenic effects of thyroid hormones on the testis.