Research Article: Hatchability improvement in ephippia Moina macrocopa through substitution of rice bran suspension with fishmeal suspension

Ephippia Moina macrocopa  hatching relates to the quality of nutrients received by the parent. Increasing the quality of the parent feed can improve the quality of the nutrient in eggs (ephippium) and can increase hatchability. This study was conducted to examine the addition of fatty acids in the feed through replacing rice bran suspension with fishmeal suspension on the quality and quantity of ephippia M. macrocopa. The treatment in this research was a substitution of rice bran suspension with fishmeal suspension by ۰, ۱۵, ۳۰, and ۴۵%.  This study indicated that substitution of rice bran suspension with fishmeal suspension of ۳۰% and ۴۵% in Moina culture produced the same ephippia production but with a higher degree of hatching. Moreover, the substitution  of rice bran suspension with fishmeal suspension by ۳۰% increased the concentration of n-۳ fatty acids (۱.۱۵%)  in the egg of ephippia M. macrocopa.

Keywords:

Mating , Hatching rate , Fatty acid , Egg , Ephippia