WROBEL, KH and NIEDERLE, P and DOCCHIO, MJ and GIFFORD, DR and SETCHELL, BP (1990) TESTICULAR MORPHOLOGY OF SHORTHORN BULLS ACTIVELY IMMUNIZED AGAINST TESTOSTERONE AND ESTRADIOL-17-BETA. REPRODUCTION IN DOMESTIC ANIMALS, 25 (6). pp. 283-290. ISSN 0936-6768,
Full text not available from this repository.Abstract
Testicular morphology of Shorthorn beef bulls at the age of 14 months (controls, n = 3) was compared with that of animals prepuberally actively immunized against testosterone (anti-T, n = 3) or estradiol-17-beta (anti-E, n = 3). The volume percentage of the Leydig cell compartment in anti-T-animals was significantly higher than in the 2 other groups. Nuclear and cellular volumes of a single Leydig cell of anti-E-bulls were significantly smaller than in the other groups. Absolute number of Leydig cells per testis in anti-T-bulls was significantly higher than in controls. There were no significant differences in the relative volume percentages of Leydig cell organelles between the 3 groups. However, since anti-T-bulls have the highest Leydig cell mass per testis (10.8 +/- 2.2 g) as compared with controls (6.0 +/- 1.1 g) and anti-E-bulls (5.6 +/- 0.3 g), the Leydig cell mitochondrial, nuclear and SER masses per testis, which reflect the steroidogenic capacity of the organ, are also higher in anti-T-animals than in controls or anti-E-bulls.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HOLSTEIN BULLS; HORMONE; CALVES; TESTIS; TESTIS; BULL; LEYDIG CELLS; IMMUNIZATION AGAINST TESTOSTERONE, ESTRADIOL-17 BETA |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:48 |
| URI: | https://pred.uni-regensburg.de/id/eprint/55217 |
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