Pungky Slamet Wisnu Kusuma, Dyah Hariani, Akhmad Taufiq Mukti
This study aimed to determine the effects of fermented feed using probiotics and laser-firing to accelerate the mature broodstocks and seed productions of African catfish (Clarias gariepinus). Fish has used male and female broodstocks of catfish. The method was used a completely randomized design with three treatments: unfermented feed as control, probiotic-fermented feed (PFF), and probiotic-fermented feed+laser firing (PFF+Li). In the first study, a laser-firing dose of 1.125 Joule was performed on fish broodstocks every 15 days. The gonadal maturity time of male and female broodstocks was observed. The second study, treated female broodstocks, was mated with mature male broodstocks without any prior treatments (control). Fertilization rate, hatching rate, and seed production performances such as survival rate and total length were measured. The results showed that treatment of PFF+Li has a significant effect (P<0.05) on the gonadal maturity time of males and females. This treatment reaches the fastest time to mature of the female gonad (31-41 days) and the male gonad (32-37 days) than other treatments (P<0.05). This treatment also produced the highest fertilization, hatching, and survival rates of more than 90%, respectively, and the highest seed yield of 2.1-3.0 cm size compared to other treatments (P<0.05) in African catfish. © 2022, Central Fisheries Research Inst. All rights reserved.
Study Program of Biology, Faculty of Technology Science, Universitas PGRI Adi Buana, Jl. Ngagel Dadi IIIB/37 Wonokromo East Java, Surabaya, Indonesia; Study Program of Biology, Faculty of Mathematic and Natural Science, Universitas Negeri Surabaya, Jl. Ketintang Wiyata 48, Gayungan East Java, Surabaya, Indonesia; Department of Aquaculture, Faculty of Fisheries and Marine, Universitas Airlangga, Kampus C Unair, Jl. Mulyorejo East Java, Surabaya, Indonesia
