Four technical problems to be solved in farming blackfish
In recent years, the blackfish market has become popular, and pond-fish cultured blackfish have emerged. In the case of sluggish trout farming, breeding blackfish has brought considerable economic benefits to fish farmers. The farmer friends have to solve the following four problems to breed black fish: First, the pond ponds that choose to breed blackfish should not be too large. The general area is 3 mu -5 mu. The water depth of the pond is 1.5-2.0 meters, and the bottom mud is 15-20 cm. The water source is sufficient and the water injection is convenient. Second, the specifications of fish fingerling and fish fingering are based on market fish specifications. At present, blackfish have a good sale with a weight of 0.7-2.0 kg. Therefore, the size of stocked fish should be 75-100 grams per tail. The stocking density should be determined based on factors such as the source of feed and breeding techniques. In general, 2000 to 2500 tails per mu are used. At the same time, 400 to 500 fish species can be cultivated. The fish species size is 100 grams to 150 grams per tail. Third, the feed for feeding black fish is a fierce carnivorous fish, eat both live and eat dead food, mainly for small eels and other wild fish for food. Artificial feeding, timing, domestication and feeding methods. Feed twice a day, 10 a.m. and 3 p.m. Normal fish species will be released for 5 days - 7 days will be able to float to the surface to catch food. When feeding, observe carefully the feeding conditions of the black fish near the food table. If there are few black fish near the food table and the food is not intensely fed, it means that the fish is full and you can stop feeding. Fourth, feeding and management blackfish large diet, excrement and more quickly make the pond water become fat. Fertilizer can make the plankton multiply, it is easy to cause oxygen in the pond water. Therefore, special attention should be paid to the change of dissolved oxygen in the water. In the event of hypoxia, aerators should be opened in time. If the lack of oxygen is more serious, you can take part of the water surface to kill the method, that is, in the pond 2 meters to 3 meters of water surface spilled dipterex, the concentration of 0.5ppm ~ 1.0PPm. Blackfish have strong resistance to disease and rarely get diseases in captivity. However, in the late autumn, blackfish can also get sick if it is poorly managed, there is insufficient feed, and there is a serious water environment. Therefore, this stage must be carefully observed, once the disease should be treated promptly. RP International Ltd is top Gelatin Supplier and Manufacturer in China. Gelatin Thickener,Food Thickener Gelatin,Gelatin Food Grade,Thickeners Edible Gelatin RP International Ltd , http://www.rp-foodadditives.com
Gelatin or gelatine is a translucent, colorless, brittle (when dry), flavorless food derived from collagen obtained from various animal body parts. It is commonly used as a gelling agent in food, pharmaceutical drugs, vitamin capsules, photography, and cosmetic manufacturing. Substances containing gelatin or functioning in a similar way are called "gelatinous". Gelatin is an irreversibly hydrolyzed form of collagen, wherein the hydrolysis results in the reduction of protein fibrils into smaller peptides, which will have broad molecular weight ranges associated with physical and chemical methods of denaturation, based on the process of hydrolysis.
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