First, breeding seedlings
For a long time, the big seedlings of the Xianbiao have been caught from rivers or artificially propagated. The number of seedlings is not large enough to meet the needs of production and development. In the early 1990s, after many years of practice, Lunjiao Town Fish Farm and other units in Shunde City finally mastered the artificial propagation technology of the maggots, producing nearly 200,000 fishes per year. Its artificial propagation method is the same as that of carp, and the injection of drugs is similar. The key is the cultivation of broodstock, the matching of male and female broodstock, and the appropriate time for aphrodisiac.
Some fish farms in Zhongshan City and Shunde City have also successively cultivated a batch of “imitation big bones†that resemble the big heads of Xian Bone. Although the features of some big bones are preserved, the taste is slightly worse. Most of what we see in hotels and restaurants are imitation bighead fish.
Second, artificial breeding
The big bones of the nymphs feed mainly on zooplankton in ponds and also feed artificially fed, smaller-diameter powdered feeds. According to research, the crude protein content of feed can be 25% to 30%. Fish species are bred through seedlings, mid-seedlings and large seedlings. According to the pond's fatness and the actual situation of the cultured species structure, the fish species specifications are better with 150-200 g per tail and 30-40 tails per acre.
The growth rate of the big head of the nymph is relatively slow, which is half that of the conventional squid. It takes two years of breeding to reach the commercial fish size of 750 to 1,000 grams, but it is expensive, and the price per 500 grams is equivalent to that of the common squid. ~5 times, very suitable for polyculture.
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