Hostname: page-component-669899f699-tzmfd Total loading time: 0 Render date: 2025-05-01T01:20:40.718Z Has data issue: false hasContentIssue false
  • English
  • Français

Changes in testicular size, body weight and plasma testosterone concentration in Iranian Holstein bull during the growth period

Published online by Cambridge University Press:  23 November 2017

A Towhidi  and
H Gholami
A Towhidi*
Affiliation:
Department of Animal Science, University of Tehran, Karaj, Iran
H Gholami*
Affiliation:
Department of Animal Science, University of Tehran, Karaj, Iran
*
Email: [email protected]
Email: [email protected]
Get access

Extract

Testicular development of bulls, during the post-weaning period, is associated to the age and breed of the animals, environmental conditions, and nutritional regime. A positive correlation between testicular development and fertility has been documented through numerous studies (Bailey et al. 1996). Scrotal and testicular measurements, which are simple and inexpensive to obtain, have been used to predict sperm production and semen quality. However, because SC is an indirect measurement of testicular mass which discounts variation in scrotal wall thickness and individual testis shape, the length and width measurements could provide a useful tool for predicting bull fertility. Therefore we conducted a study to evaluate testicular growth during puberty and to determine 1) appropriate models for analysis of phenotypic relationships of testicular dimension and growth traits to age during puberty; and 2) correlations of testis width and length to plasma testosterone and body weight in pubertal Holstein bulls under environmental conditions of Iran.

Type
Poster presentations
Information
Proceedings of the British Society of Animal Science , Volume 2006 , March 2006 , pp. 149
Copyright
Copyright © 2016 The American Society of International Law

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

Aponte, P. M., Rooij, D. G. and Baastidas., P. 2005. Testicular development in Brahman bulls. Theriogenology. 64: 1440-1455.Google Scholar
Bailey, T. L., Monkey., D., Hudson., R. S., Wolfe., D. F., Carson., R. L. and Riddell., M. G. 1996. Testicular shape and its relationship to sperm production in mature Holstein bulls. Theriogenology. 46: 881-887.CrossRefGoogle ScholarPubMed