HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Gray, R. C. Articles by Tribble, L. F. Search for Related Content PubMed PubMed Citation Articles by Gray, R. C. Articles by Tribble, L. F.

Testosterone Levels of Boars at Various Ages^{1, 2,}

Missouri Agricultural Experiment Station, ^,5 Columbia 65701

Abstract

Testosterone was identified in the spermatic vein blood of the boar. This steroid was also present in measurable amounts in the peripheral venous blood. Analysis of variance showed that the testosterone level in spermatic vein blood of boars with the highest backfat was significantly higher than the testosterone level of boars with the lowest backfat.

Testosterone levels of spermatic vein blood of boars sampled from 3 months to 9 months of age indicated that peak production is reached between 5 and 7 months of age, which is when sexual maturity is reached.

¹ Contribution from Missouri Agricultural Experiment Station. Journal Series No. 5056. Approved by the Director.

² This investigation was supported by a PHS Pre-doctoral Fellowship No. 5-F1-GM-20, 014 from the National Institutes of Health, Public Health Service.

³ Present address: Department of Animal Science, Wisconsin State University, River Falls.

⁴ Present address: Department of Animal Science, Texas Technological University, Lubbock.

⁵ Department of Animal Husbandry.