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Reaction time, seminal fructose, fructolytic index and blood testosterone profile in Holstein-Friesian and crossbred bulls*

Indian Agricultural Research Journals

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Title Reaction time, seminal fructose, fructolytic index and blood testosterone profile in Holstein-Friesian and crossbred bulls*
 
Creator PATEL, K V
CHAUHAN, M K
MEHTA, V M
DUGWEKAR, Y G
 
Subject Breeding bulls, Fructolytic index, Reaction time, Seminal fructose, Testosterone profile
 
Description This study was carried out at a central sperm station Over a period of 10 months on 11 sexually mature (4-6 year-old) healthy breeding bulls of 3 genetic groups (4 HE; 4 K HF and 3 K J) under weekly twice semen collection schedule. The overall means of reaction time, seminal fructose and fructolytic index recorded at monthly intervals were 88.25 ± 14.19 sec, 546.38 ± 29.02 mg% and 1.08 ± 0.06 respectively. The serum testosterone profile studied once on each bull at 10 min, 6 hr and 24 hr post-semen collection averaged 7.11 ± 1.05, 3.66 ± 0.44 and 5.44 ± 0.62 ng/ml, respectively. The influence of breed was significant only for testosterone levels, which also varietl significantly between breeds and between sampling intervals. The values were higher in K J bulls and also at 10 min and 24 hr post-semen collection in all the 3 breeds. The results suggest that semen collection time or actual collection evokes stimulatory response through hypothalamus on Leydig cells to secrete greater amount of testosterone, although the correlations of above traits with seminal attributes and fertility rates of bulls were very low and nonsignificant.
 
Publisher Directorate of Knowledge Management in Agriculture
 
Contributor —
 
Date 2014-01-08
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
—
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAnS/article/view/36416
 
Source The Indian Journal of Animal Sciences; Vol 71, No 2 (2001)
0367-8318
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAnS/article/view/36416/16216
 
Rights Copyright (c) 2014 The Indian Journal of Animal Sciences