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Home▶ Journals▶ Indian Journal of Veterinary Sciences and Biotechnology▶Archive▶Vol. 12 No. 4 (2017)▶Prepubertal Serum Testosterone Concentration In Vembur Rams…
Indian Journal of Veterinary Sciences and Biotechnology
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Prepubertal Serum Testosterone Concentration In Vembur Rams At Different Rearing System

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R Selvakumar — Instructional Livestock farm Complex, Veterinary College and research Institute, Tirunelveli- 627 358 Tamil Nadu Veterinary and Animal Sciences University
T Sivakumar — Instructional Livestock farm Complex, Veterinary College and research Institute, Tirunelveli- 627 358 Tamil Nadu Veterinary and Animal Sciences University
S Ganesh Kumar — Instructional Livestock farm Complex, Veterinary College and research Institute, Tirunelveli- 627 358 Tamil Nadu Veterinary and Animal Sciences University
P Anuradha — Instructional Livestock farm Complex, Veterinary College and research Institute, Tirunelveli- 627 358 Tamil Nadu Veterinary and Animal Sciences University
Published 5 May 2015 Vol. 12 No. 4 (2017), pp. 84-86 ● Open access
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Abstract

The present investigation was carried out to study the prepubertal testosterone pattern and age at puberty in Vembur rams reared under farm and farmers field condition. A total number of 8 Vembur ram lambs each from farm and farmers field were selected. The measurement of testosterone was performed by Radioimmunoassay (RIA). The serum testosterone level from 6th to 20th month of age ranged from 0.132 ± 0.04 to 3.823 ng/ml in semi intensively maintained farm males and 0.138±0.04 to 3.456±0.17 ng/ml in animals maintained at farmer’s holdings. The serum testosterone levels were crossing the concentration of 2.5 ng/ml at the age of 17 to 18th weeks and successful mounting, intromission and ejaculation were noticed after this age. 

KeywordsTestosteronepubertyVembur sheepdifferent management, RIA

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