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Bream broodstock breeding method
Bred broodstock cultivation is very important, because the healthy, well-developed broodstock is the material basis for breeding trout. 1. Broodstock cultivation ponds: The area is suitable for 2 to 3 mu and the water depth is 1.5 to 2 meters. The bottom of the pool is required to be flat, with easy injection and drainage, fresh water, and a certain degree of fatness. 2. Broodstock stocking: 100-120 kilograms of broodstock broodstock per acre (more than 100 kilograms of broodstock per kilogram of fish), and, in addition, a small amount of fish such as cockroaches, clams, grass carp and grasshopper. Female and male broodstock are best kept in separate ponds. If they are polycultured, male and female fish must be reared separately about 1 month before the broodstock spawns. When separating ponds, males and females are strictly differentiated so as not to mix premature and spawning. 3. Feeding and management: Feeding squid broodstock requires frequent feeding and fertilization, mainly feeding. Commonly used feeds include bean cakes, bread cakes, compound feeds, rice bran, lettuce leaves, and snails. Squid is an omnivorous fish and do not feed a single feed for a long time. The amount of bait is about 3% to 5% of body weight, which is appropriately increased or decreased depending on the season.