Abstract
This study aims to determine the substitution rate of Artemia naupli to Phronima sp., which produces high-quality seahorses H. Barbouri juveniles This research was carried out using CRD (Completed Randomized Design) with five treatments and three replications. The treatments were natural feeding with different levels of substitution, (A) 100% Artemia nauplii, (B) 75% Artemia nauplii+25% Phronima sp. (C) 50% Artemia nauplii +50% Phronima, (D) 25% Artemia nauplii+75% Phronima sp. and (E) 100% Phronima sp. Data were analyzed with Analysis of Variance and W-Tuckey test to determine the significant difference between the treatments. The parameters of the study included the analysis of feed quality (proximate and amino acid analysis) and survival. Results of the ANOVA indicated that the substitution of Artemia nauplii to Phronima sp. had a significant effect (P <0.05) on survival rate. Based on the result of the proximate analysis of Phronima, the protein and fat content is insufficient for juvenile requirements, which only ranged from 37,12% and 3,82%. The results of the amino acid analysis of Phronima, the total of essential amino acids are deficient in juvenile requirements. The treatments of C and D produces the highest survival value of 96,67%. While in E treatment produce the lowest survival value of 63,33%. Based on the juvenile quality analysis, it can be concluded that the use of Phronima as an alternative feed for seahorse juveniles H. barbouri can be given at a substitution rate of up to 75%.
Highlights
Seahorses are fish species that have high economic value and have been widely traded as ornamental fish, souvenirs, and dried as a raw material for traditional Chinese medicines (Rosa et al, 2011)
This study aimed to determine the level of substitution of Phronima in replacing Artemia naupli as an alternative feed for the rearing of H. barbouri juveniles so that it will produce the best survival
The total feed energy produced in all treatment A, B, C, D, and E was lower with increasing percentage substitution of Artemia naupli with Phronima sp
Summary
Seahorses are fish species that have high economic value and have been widely traded as ornamental fish, souvenirs, and dried as a raw material for traditional Chinese medicines (Rosa et al, 2011). Some countries are known to have carried out seaweed hatchery activities, among others; the Philippines, Vietnam, China, India, and Australia. Whereas in Indonesia, the development of seaweed hatchery activities in both the mass and the backyard scale has been carried out in Lampung Sea Cultivation Center and in South Sulawesi on the island of Sabutung of Pangkep Regency and Badi Island, Mattiro Deceng Village of Pangkep Regency. The type of natural feed given by seahorse juvenile is Artemia salina naupli, because, in addition to being natural in the culture process, it is available commercially (Payne &Rippingale, 2000). Artemia salina is one of the natural feed with high selling prices in the market. There’s the need for alternative feed that can replace Artemia salina
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