--- Extend the growth period and increase fish production. In the spring, the release of fish generally refers to the release of fingerlings in April. From October to November of the same year, the growth period is only 7.8 months, while the autumn harvest is 9 years in the first year. The fry is stocked in October and harvested from October to November in the second year. During the entire growth period, the weight can be increased by about one time.
Second, to expand the water area, the survival rate is high. The concentration of fry on “spring release†will cause pressure on the limited fry overwintering pool, and the implementation of “fall†will make full use of the waters of fish ponds and increase the survival rate of winter fry.
Third, reduce fish disease and promote growth. When spring fry is released, the seasonal temperature is low, and the fry have less food intake and weaker constitution. A slight scrape will cause illness when the fry is transported and put in. In the autumn, when the fish grows vigorously, the body is strong and it is not easy to bruise. In addition, the fry adapt to the new water environment in the winter and will soon enter the growing season when the water temperature rises in the coming year. Of course, in the autumn, fry rearing, it is necessary to strengthen management during the winter, adhere to the morning and evening patrol ponds, regular disinfection to improve the water body, feeding feed to achieve timing, positioning, qualitative, quantitative, timely removal of feed residue. Found fish diseases, timely diagnosis, symptomatic treatment. In the winter, attention should be paid to ice-breaking oxygen, and the water level and depth should be known in time.
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Hormones & Its Intermediates
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