De-adhesion of Common Carp Fish Eggs (Cyprinus carpio L.) Using Strawberry Natural Juice Solution During Artificial Reproduction Process

Abstract

One of the most important problems during artificial reproduction of Common carp is the adhesion of its egg. Disposal of adhesive material on eggs increasing its hatching rate activity. In this research three different concentrations of Strawberry Juice were used (10, 15 and 20% respectively) to treat the eggs of Common carp fish in order to remove the adhesive materials comparing with the control (salt, urea and Tannin solutions). The results showed that using Strawberry Juice after eggs fertilization with concentration of 20 and15 % have the possibility of removing the adhesive substances with short time of about 5 and 7 minutes respectively with significant effect ( p>0.05) as compared with the control treatment which it takes about75 minutes to remove this substance. While the concentration of10 %the adhesive materials were not removed. Additionally there was a surpassing effect (p>0.05) at the rat of eggs fertilization and hatching in the both concentrations (15%; 20 %) which was higher than that treated with Tannin and fertilizing solution, and the results also showed that eggs at the two treatments (T2 and T3) with Strawberry Juice , have a shorter period of incubation which was(66 and 64 hours)as compared with the control (71 hours to hatches at 22Cº).