The Use of Pineapple Extract to Remove Egg Adhesiveness in the Production of Asian Redtail Catfish Fry (Hemibagrus nemurus CV)

Asian redtail catfish (Hemibagrus nemurus) is one of the freshwater fish commodities that have high economic value and are popular with the public. To meet the consumption needs of the community, this fish farming business has started to be carried out, but the provision for the cultivation needs is still an obstacle that is always encountered. This is because of the high adhesion of the eggs in the hatching that is carried out so it will affect the fertilization and hatching values obtained. The purpose of this study was to analyze the use of pineapple extract with different doses on egg adhesion, fertilization, hatching, growth, and survival of Asian redtail catfish fry. This research was conducted from April to June 2022 at the Laboratory of Fish Hatchery and Breeding, Faculty of Fisheries and Marine Science, Riau University. The design used was a completely randomized design with a dose of pineapple extract consisting of a P0 dose of 0% (control treatment without soaking pineapple solution), P1 dose of 0.75% (immersion treatment with a dose of 0.75 ml pineapple solution/liter of water). P2 at a dose of 1.00% (immersion treatment with a dose of 1.00 ml of pineapple solution/liter of water) and P3 at a dose of 1.25% (immersion treatment with a dose of 25 ml of pineapple solution/liter of water). The results showed that the best treatment was obtained at P2 treatment at a dose of 1.00% (immersion treatment with a dose of 1.00 ml pineapple solution/liter of water) with a fertilization value of 89.50%, hatching value of 82.37%, egg adhesion value 26, 16%, absolute weight growth of 1.3151 g, absolute length growth of 4.74 cm, a daily weight growth rate of 13,8057 % and survival rate of 72%.