Effect of eggs immersion in tanin solution against embryonic development of common carp fish (Cyprinus carpio L.)

Abstract

Common carp (Cyprinus carpio L.) is a freshwater fish that has great potential to be developed, because it have high nutritional content. The eggs carp that is cultivated naturally have a high mortality rate, almost 80. Tannins have the ability to bind and precipitate proteins the caused by the presence of a number of functional groups that will bond strongly with protein molecules interacted which in turn will generate substantial crosslinking and tannin-protein complex that. This study was conducted to determine the effect of soaking the eggs in a solution of tannin on the embryonic development of carp. Method used in this study using quantitative descriptive method. The results showed that the soaking time tannin solution can affect to the rate of embryonic development of common carp at each phase. In the treatment of 120 and 180 seconds embryos develop faster in the early phase and the final phase is slower than the control. This suggests that the tannin solution can Accelerate the development of the embryo in the early phase and the discovery of abnormal larvae hatch in the treatment of 180 seconds.