Summer Flower Fish: mainly raise one fish without putting carp feed combined with strong feeding

Summer flower fish species are small and delicate, and their ability to resist adverse environment is weak, coupled with the transformation of summer flower feeding at this stage, but the structure and function of their digestive system are not yet well developed, and their digestive ability is poor. If the feeding method is improper, there will be a large number of deaths. Through the experiment, the author found that the following culture methods can significantly improve the survival rate and culture benefit of summer flowers.

Scientific stocking and reasonable matching of traditional breeding methods are mainly mixed culture of multiple varieties. However, from the perspective of production practice, due to the different eating habits of fish, this culture method is easy to cause uneven eating of various fish species, so the survival rate of fish species is relatively low, generally about 40%. Moreover, this culture method is also prone to individual growth differences, which aggravates the pressure of survival competition among different fish species, inhibits the normal growth of fish species, and the culture yield is not high.

After continuous experiments for many years, we found that there is mainly one species, accounting for more than 90%, generally 15,000 to 20,000 per mu, and about 10% of other fish species are matched according to the feeding habits and habitat water layers of different fish species. in order to make full use of water space and bait resources, can significantly improve the efficiency of culture. The following points should be paid attention to when releasing fish stocks:

First, the main species will be stocked for 5 or 7 days before matching fish species, so as not to adversely affect the main species.

The second is to select large fish species as much as possible in the same pond to ensure the excellent growth performance of fish species.

Third, beware of mixing with carp fry. Because the carp fry have a strong ability to compete for food, under the same specifications and the same culture conditions, the growth rate of carp is nearly 10 times higher than that of other fish (summer flower species are generally raised for an average of 85 days), which not only poses a threat to the survival of the main fish culture, but also stirs up the bottom sediment and destroys the water quality.

Fourth, strictly disinfect and fertilize the water quality. Before stocking fish fry, the pond must be thoroughly disinfected with quicklime, injecting 1.4 to 1.6 meters of water, applying sufficient basic fertilizer, applying 200 kg of organic fertilizer, 15 kg of urea and 30 kg of phosphate fertilizer per mu to cultivate the natural food of summer flower fish fry into the pond.

According to the physiological characteristics of the changing period of feeding habits of summer flower fish, the feeding method was improved.

One is to feed a sufficient amount of high-quality feed. In order to ensure the nutritional requirements for the rapid growth of summer flower fish, the feed protein content should reach more than 30%. The proportion of feed formula is: fish meal 15%, bean cake 40%, hemp cake 30%, @ # @ 245 powder 15%. Mix the above feed evenly and knead it with water to form a soft and hard feed ball and throw it on the food table. The feeding amount shall be finished in 1-1.5 hours. The amount of feed will be increased gradually in the future.

The second is to apply fertilizer in time depending on the quality of the water. Topdressing is mainly inorganic fertilizer, with a small amount of organic fertilizer, which can not only increase the content of dissolved oxygen, but also provide rich natural bait. This combination of feed and fertilizer culture method, can improve the growth rate of fish species, reduce production costs, generally only about 20 days, summer flower fish size can reach more than 5 grams. At this time, the summer flower has basically had the feeding habits of adult fish. After 2-4 days of "training and feeding", most young fish have developed the habit of floating to the surface for food, and can be fed pellet feed with a diameter of 2 mm.

Timely pond division to promote the growth of summer flower fish species after a period of intensive feeding, the individual growth is larger, if not in time, the growth is often inhibited due to excessive density and deterioration of the living environment, and the survival rate will be reduced. Therefore, it is necessary to divide the pool in time to reduce the density in order to keep the individual uniformity of the population and improve the survival rate. When dividing the pond, the larger fish species are screened out by fish sieve and cultivated in a special pond, or they can be fed in adult fish ponds with lower density. After pulling the net and dividing the pool, it avoids the competition for food between the small fish and the big fish, and after the intensive stimulation exercise, the fish discharges too much water in the body and secretes a large amount of mucus, which enhances the disease resistance and adaptability to the adverse environment. However, the operation of pulling net and screening should be light and handy, so as to prevent the fish from being bruised and infected with disease.