The quality and good perform of broodstock is needed in aquaculture activities to get good quality and quantity of spawning and egg production. It can be seen from several aspects such as the origin of the broodstock, the quality of the water where the broodstock lives and the feed given to the broodstock. One of the determining factors in the gonad maturation of the broodstock is maintaining feed management, including the quality of feed, complete nutrition, and feeding technique . This activity aimed to im proving the quality and quantity in spawning and egg production of silver pompano Trachinotus blochii broodstock through feed management in Batam Mariculture Center , it was done in January-December 2023 . The method that was conducted was carried out with good feeding management including the feeding schedule, frequency of feeding, type of feed and additional supplements. The feeding schedule for broodstock was given daily from Monday until Saturday whit the frequency 2 times a day. The types of feed given we re fresh fish (frozen fish ), fresh squid and moist pellets (consisting of commercial pellet with 42% of protein, rebon/trasi shrimp and squid oil). The supplement given was vitamin E (capsulated, 250 iu per piece). The feed dose given was 2-3% of body weight. The parameters observed were the spawning (type and frequency) of broodstock and fertilized rate (FR, %) of the eggs.
Before this activity was carried out, from the 15 selected silver pompano Trachinotus blochii broodstock , 10 were male and 5 were female. Hormonal spawning is carried out, with a spawning frequency once a month or in the full moon with amount of the egg 300.000-500.000 eggs with fertility (FR) < 70%. After improving with feed management in this activity, the quality and quantity of spawning was better with the same broodstock. The result showed that the spawning occured in natural spawning 2 times a month (full and dark moon) with a number of eggs > 500.000 eggs with FR > 90 %. The silver pompano Trachinotus blochii broodstock spawning regularly every month for a year. From the results, it can be concluded that feed management was very important and effect to improving the quality and quantity of spawning.