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Journal : Aquacultura Indonesiana

Feed Enrichment with Amylolytic Lactic Acid Bacteria to Stimulate the Growth of Freshwater Crayfish (Cherax quadricarinatus) Dahlia, Dahlia; Hasniar, Hasniar; Seniati, Seniati; Ardiansyah, Ardiansyah; Idris, Andi Puspa Sari; Hartinah, Hartinah
Aquacultura Indonesiana Vol 19, No 1 (2018)
Publisher : Indonesian Aquaculture Society (MAI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (304.376 KB) | DOI: 10.21534/ai.v19i1.114

Abstract

The goal of feed enrichment with amylolytic Lactic Acid Bacteria (LAB) was to get an optimal feed formula in stimulating the growth of freshwater crayfish (Cherax quadricarinatus). The research design used a completely randomized block design, which consists of 2 groups (Group I = probiotic HS7 with inoculum density 108 and Group II = probiotic HS7 with density 1010). Each group were given 4 different treatment (Feed A = protein 50%-carbohydrate 20%; Feed B= protein 40%-carbohydrate 30%; Feed C= protein 30%-carbohydrate 40%; and Feed D= protein 20%-carbohydrate 50%), with 2 repetition. The parameter observed in this study was daily growth rate and absolute growth. The result showed that Feed C, composed by protein 30%-carbohydrate 40% with LAB enrichment and inoculum density of 108  gives the best growth, with daily growth rate of ± 0.22-0.23 % each day and absolute growth of ± 13.10-13.20 gram in 75 days.
Performance of Total Haemocyte Count and Survival Rate The Tiger Prawn Penaeus Monodon Fabricius Juvenile Rearing at High Density Tayibu, Hartinah; La Sennung, La Paturusi; Ratnasari, Ratnasari; Hamal, Rimal; Dahlia, Dahlia; Rustam, Rustam
Aquacultura Indonesiana Vol 18, No 1 (2017)
Publisher : Indonesian Aquaculture Society (MAI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (305.384 KB) | DOI: 10.21534/ai.v18i1.77

Abstract

High density is one of the common consequences of intensive shrimp culture. High density can induce stress on the shrimp. Nonetheless, stress is not always harmful. In limited period, stress can trigger metabolism process and the hormonal system of the body. This study aimed to determine how high-density rearing causes stress on juvenile shrimp. The experiment consisted of three different density treatments, 60, 90 and 120 tiger prawn juveniles/m2  with two different weight groups,  3 to 10 g,  and 11 to 16g as test animals. Each treatment with 3 replications, and 2 stocks were provided for treatment A, B, and C respectively (the stock was prepared to substitute the test animals at hemolymph sampling). Total Haemocyte Count (THC) was the main parameter used as a reference in assessing the response of tiger prawn juveniles to hight density. Based on the 3 treatments densities tested, the results showed that THC of the juvenile tiger prawns reared at 3 densities increased up to 24 h observation and decreased at 36 h observation. In fact, THC of the shrimp at the highest rearing density of 120 juveniles/m2 increased, which is one of the alleged treatment of tiger prawn juveniles tried to increase the tiger  prawn's body defence. But the decline in THC was observed in the lowest rearing density of 60 shrimps/m2, in which the treatment did not cause stress on the tiger prawns  in the lower weight group of 5 to10g (treatment A). In contrast, THC of the tiger prawn  in the medium and highest rearing density (treatment B and C) drastically declined due to stress on tiger prawn juvenile and led to the tiger prawn  dead.  However, it is assumed that the tiger prawn juvenile that can adapt to the stressful condition, stress may become a stimulus that can trigger moulting, which is olso known as an indicator of growth.