Pengaruh Pemberian Asam Amino Lisin pada Pakan Komersial dengan Feeding Rate yang Berbeda terhadap Pertumbuhan dan Kelangsungan Hidup Ikan Patin (Pangasius pangasius)

Abstract

Catfish (Pangasius pangasius) is one of the most widely farmed fish species in Indonesia due to high demand in both domestic and international markets. L-lysine is an essential amino acid that cannot be synthesized by fish themselves and must be obtained through feed. This study aims to evaluate the effects of L-lysine supplementation in commercial feed with different feeding levels on the growth and survival of catfish. The research was conducted from September to October 2023 using an experimental method with a factorial randomized block design (RBD). This study consisted of two factors: lysine levels (2%, 3%, and 4% per kg of feed) and feeding levels (3%, 4%, and 5%), each with three replications. The results show that lysine supplementation in commercial feed significantly affects the feeding rate, which in turn affects the growth and survival of catfish. The best results were observed in treatment A3F3 (4% lysine with a feeding rate of 5%), which produced the highest weight increase of 26.84 grams and a high survival rate of between 90-100%, supported by adequate feeding nutrition and good water quality. Additionally, the most efficient feed utilization, indicated by the lowest feed conversion ratio (FCR) of 2.00, was achieved in treatment A3F1 (4% lysine with a feeding rate of 3%), suggesting that this combination is the most effective in promoting optimal growth and survival of catfish.