Study the defects of mitochondrial architecture in mid piece of sperms in young and aged local bulls

Abstract

This study was conducted in kerbala, vet. Med.lab University of kerbala, to determine the effect of age on sperm activity and quality in bulls. The study included the collection of 30 semen samples from the tail of epididymis from local healthy bulls (15 from young and 15 from aged bulls) .The results revealed abnormal mid piece of sperms in 4 (26.66%) samples in young bulls, gives 5 defects as the following: 3 (20%) thickness, 1(6.66%) irregular, and 1(6.66%) absent) in young samples, while the abnormalities of aged shows 13(86.66%) samples gives 42 defects as the following: 10 (66.66 %) thickness, 8 (53.33%) interrupted, 6 (40%) irregular, 5 (33.33%) thin, 4 (26.66%) short, 4 (26.66%) pseudo droplet, 3 (20%) absent, 2 (13.33%) double. Statistical analysis revealed, there is significant variation P ≤ 0.01 in abnormalities of sperm mid piece between young and aged bulls.