Vol. 7, Issue 2 (2019)
Strain and age related changes of semen attributes in white leghorn roosters
Author(s): R Richard Churchil, Lijo John, P Ezhil Praveena and Stella Cyriac
Abstract: The present study was conducted to assess the semen quality parameters at young (32 weeks) and old (64 weeks) age in two pedigreed populations of single comb White Leghorn selected for egg production for 21 generations. The roosters of IWP strain had yielded significantly (p<0.05) high volume of semen with better (p<0.05) appearance score at 32 weeks of age and significantly (p<0.05) high motility at both the ages compared to their counterparts in IWN strain. The percent live sperm was significantly (p<0.05) more in IWN strain at 64 weeks of age. A clear interaction of age was evident in this study as all the semen quality parameters deteriorated significantly (p<0.01) at older age in both IWN and IWP strains. On phenotypic scale, appearance score was having high positive correlation with motility, concentration and percent live sperms in both the strains but negative correlation with percent abnormal sperms. Semen volume was having significant positive correlation with motility in IWN (p<0.05) and IWP (p<0.01) strains but strong (p<0.01) negative association with concentration in both the strains. The sperm motility had a strong (p<0.01) association on positive direction with live sperms in both the strains.
Pages: 1838-1842 | 401 Views 115 Downloads
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How to cite this article:
R Richard Churchil, Lijo John, P Ezhil Praveena, Stella Cyriac. Strain and age related changes of semen attributes in white leghorn roosters. Int J Chem Stud 2019;7(2):1838-1842.
