The Effect of Substrate on The Growth and Survival of Abalone (Haliotis squmata) Recirculation System

Abstrak

Abalone (Haliotis squamata) is a high-value economic commodity that has great potential for cultivation, but selecting the right substrate is a key factor in increasing cultivation productivity because it affects the level of attachment, feeding activity, growth, and survival in a recirculation system The purpose of this study was to determine the effect of the right substrate in supporting the growth and survival of abalone (Haliotis squamata).This study used an experimental method with a Completely Randomized Design (CRD) with 5 substrate treatments (coral, gravel, sand, coral + sand, gravel + sand) with 3 replications. A total of 20 abalone seeds measuring 1.5-2.5 cm were reared for 60 days. The parameters observed included absolute length growth, absolute weight, specific growth rate (SGR), and survival rate (SR) measured every 15 days. Data were analyzed using ANOVA and a follow-up LSD test. The parameters observed included shell length increase, absolute weight, specific growth rate, survival rate, and water quality. The results showed that the coral reef substrate supported a growth rate of 0.94% per day with an 83% survival rate, while the sand substrate showed a growth rate of 0.59% per day with a 57% survival rate. It was concluded that the best treatment on the coral reef substrate.