Comparison of pH of seminal plasma and blood serum in males and effects of female broodstocks on male sperm quality parameters in Cyprinus Carpio

This research was conducted in 2007 on Cyprinus carpi° in Alvand High School in Ghasreshirin. We randomly selected 20 broodstock male fishes in 2 age classes (2, 3 years old). In each year class, 10 males were selected and after sperm striping, seminal plasma were allocated in different groups, and pH was measured. Seminal plasma pH had significant difference among two age classes of males and in 2 male age class was 8.2±0.2 while in 3 males was 8.5±0.4. This value in 3 year group was the highest and in 2 age class was the lowest. Blood serum pH was not significantly different between the two male age classes and in 2 male age class was 7±0.1 while in 3 males was 710.12. Duration of sperm motility in 2 male age class was 83.82±1.2s and for 3 males was 89.3 1.4s. This value in 2 male age class was the lowest and showed significant difference with other groups. Spermatocrit in 2 age class was (45±0.7) significantly different than 3 (47±0.6) at the level of 5%. In males kept. ....