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What are the key technical points for feeding management of broodstock?

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1. The feeding condition of broodstock directly affects the quality of gonadal development, the quality of eggs, and the survival rate of fry. Broodstock feed generally includes frozen fresh fish, mackerel, oysters, large sandworms, and small sandworms, among which small sandworms are the best, because small sandworms are suitable for large yellow croaker to swallow, and if not eaten, they will not die after sinking to the bottom, which can reduce pollution in the water. 2. When the broodstock is heated to about 20°C, the feed intake must reach at least 3% of body weight, and the feeding time is generally divided into 2 to 3 times per day according to the daily feeding condition.

1. The feeding condition of broodstock directly affects the quality of gonadal development, the quality of eggs, and the survival rate of fry. Broodstock feed generally includes frozen fresh fish, mackerel, oysters, large sandworms, and small sandworms, among which small sandworms are the best, because small sandworms are suitable for large yellow croaker to swallow, and if not eaten, they will not die after sinking to the bottom, which can reduce pollution in the water.

2. When the broodstock is heated to about 20°C, the feed intake must reach at least 3% of body weight, and the feeding time is generally divided into 2 to 3 times per day according to the daily feeding condition.

3. During the cultivation period, the daily water exchange volume is 1/3 in the early stage and 1/2 in the middle and late stages, with siphon cleaning once every 2 to 3 days.

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