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PERFORMANCE OF SPAWNING BROODSTOCK MILKFISH, Chanos chanos ON GENERATION 1 (G1) IN THE CONTROL TANK  

Tony Setia Dharma, Ida Komang W, Gigih Setia Wibawa dan Irwan Setyadi
 
Institute of marine research aquaculture and development
Email: tonysetiadharma@gmail.com
Po Box 140 Singaraja 81101

                   The study was conducted in at BBRPBL, test animals used is milkfish selection results. The aim of this study was to determine the spawning is capable of producing eggs and the performance of milkfish brood stock selection results. This research was conducted by using as much as 2 concrete tank volume of 150 m³, respectively bath maintained 60 breeding with an average weight of 4.50 to 5.50 kg. The maintenance is done according to the standard (SOP) existing and expected to produce eggs and seeds G2.

The results showed that the length and weight growth of milkfish selection results are rear in the concrete tank (A) reach a total length of 81.87 ± 2.75 cm and a weight of 6.44 ± 0.90 kg and B) the total length of 81,10 ± 2.40 cm and a weight of 5.94 ± 0.76 kg. In the tank A and B are already spawning. A tank have the best eggs quality and spawn. In December number of spawn frequency were 23 time and 22 time. Total of spawn  6.352.550 eggs and 5.337.100 eggs. Fertility of egg around 44,40-73,64 %. Hatching rate of eggs around 75.20 to 90.30 %. Survival activity index (SAI) was 4.0 to 4.6 days after hatching. The pre brood stock generation 2 (G2) to conduct in ponds following the individual selection protocol (SOP) of 3 groups. Group 1 have old 5 months and 1 month group 2 and 3 in total length and average weight were 22.52 ± 2.85 cm and weight of 97, 26 ± 5.20 g. Group 2 and 3 total length around  4,50-5,85 cm and a weight of 6,90-7,50 g.

                           The results showed that the length and weight growth of milkfish selection results are rear in the concrete tank (A) reach a total length of 81.87 ± 2.75 cm and a weight of 6.44 ± 0.90 kg and B) the total length of 81,10 ± 2.40 cm and a weight of 5.94 ± 0.76 kg. In the tank A and B are already spawning, A tank have the best eggs quality and spawn. In December number of spawn frequency were 23 time and 22 time. Total of spawn  6.352.550 eggs and 5.337.100 eggs. Fertility of egg around 44,40-73,64 %. Hatching rate of eggs around 75.20 to 90.30 %. Survival activity index (SAI) was 4.0 to 4.6 days after hatching.

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