Authors : S. Tabatabaei, M. Chaji and T. Mohammadabadi
Abstract: The goal of present study was to evaluate the effect of Indigenous broiler breeder rooster age on some of the semen quality parameters. For this research, 15 Indigenous broiler breeder Roosters were classified in three treatment groups according their ages: 26, 34 and 45 weeks and evaluation of semen repeated 4 times for each group. Semen was collected from all roosters by abdominal massage method. After dilution, semen samples were examined microscopically for quality parameters (concentration, motility, viability and morphological defect rates of spermatozoa). The difference of spermatozoa concentration between 26 and 34 weeks roosters was not significant; but sperm concentration reduced significantly in 45 weeks roosters. Sperm motility and viability rates reduced significantly with ageing of roosters. Morphological defect rates of spermatozoa. Morphological defect rates of spermatozoa increased significantly with ageing of roosters. Among observed morphological defects, Larger head, smaller head and 180° bent head, increased significantly with ageing of roosters. While, tail knotting and 180° bent tail decreased significantly with ageing of roosters. The differences of other defects between groups were not significant. It is concluded that concentration, motility and viability rates of spermatozoa in indigenous broiler breeder roosters reduced with increasing the age from 26-45 weeks. While in this period, morphological defect rates of spermatozoa increased. Therefore, present study confirmed that semen quality reduced with ageing of indigenous broiler breeder roosters.
S. Tabatabaei, M. Chaji and T. Mohammadabadi, 2010. Correlation Between Age of Rooster and Semen Quality in Iranian Indigenous Broiler Breeder Chickens. Journal of Animal and Veterinary Advances, 9: 195-198.