Short-term variations in plasma LH and testosterone in bull calves from birth to 1 year of age
- 1 January 1979
- journal article
- research article
- Published by Bioscientifica in Reproduction
- Vol. 55 (1), 81-85
- https://doi.org/10.1530/jrf.0.0550081
Abstract
Summary. LH and testosterone levels in bull calves were studied in the plasma samples collected sequentially at 15-min intervals every month during the first year of life. An episodic pattern of LH release occurred after birth and the frequency and magnitude of the LH peaks increased up to 4 months of age and decreased thereafter. A testicular response was not observed before this age. It is suggested that this episodic LH activity is responsible for the testicular development which then initiates puberty.This publication has 4 references indexed in Scilit:
- Androgen radioimmunoassay in the ram : results of direct plasma testosterone and dehydroepiandrosterone measurement and physiological evaluationAnnales de Biologie Animale Biochimie Biophysique, 1978
- Temporal fluctuations of plasma LH and testosterone in Charolais bull calves during the first year of lifeAnnales de Biologie Animale Biochimie Biophysique, 1976
- Thoughts on puberty. Initiation of the gonadotropic functionAnnales de Biologie Animale Biochimie Biophysique, 1976
- Variation of Plasma Testosterone in Developing Friesian BullsJournal of Animal Science, 1976