| Abstrakt: |
In this study, reproduction efficiency and some blood indices and sex hormones of female Cyprinus carpio var. Sazan were studied due to the injection of Ovapas and Ovulin hormones. For this purpose, 24 male and female broodstocks were injected with 0.5 mL/kg of Ovapas and Ovulin hormones during one and two stages. The results of the reproductive efficiency indices showed that the injection of Ovapas and Ovulin hormones had an effect on the number of eggs, fertilization percentage, hatching rate and larval survival percentage (P<0.05), so that the highest fertilization percentage, hatching rate and larval survival percentage were in two-stage injection of Ovapas and the lowest in one-stage injection of Ovapas (P<0.05). The injection of Ovapas and Ovulin hormones had no effect on female broodstocks red and white blood cells, hemoglobin, hematocrit and lymphocytes (P>0.05). However, the number of neutrophils in the two-stage injection of Ovapas increased significantly in the post-injection stage compared to the previous stage (P<0.05). Also, the levels of serum glucose and cortisol increased significantly in the post-injection phase compared to the previous phase in all treatments (P<0.05). Thus, the highest increase in cortisol was in the two-stage injection of Ovulin and the lowest in the two-stage injection of Ovapas. But no effect has seen on calcium, sodium and total protein (P>0.05). In addition, the amount of sex hormones estradiol, progesterone and testosterone increased in all four treatments after the injection of hormones (P<0.05). Thus, the amount of estradiol in one-stage injection of Ovulin and the amount of progesterone and testosterone in two-stage injection of Ovapas were higher than other treatments (P<0.05). The results of this study showed that two-stage injection of Ovapas improves reproductive performance in female broodstocks of Cyprinus carpio var. Sazan. [ABSTRACT FROM AUTHOR] |
