Feed formula for common fish
1. Carp feed formula. ① bran 43%, fish meal 30%, bean cake 15%, barley 10%, additive 2%. ② bean cake 50%, fish meal 15%, wheat bran 15%, rice bran 15%, vitamin 1%, inorganic salt 1%, antibiotics, leftovers 1%, adhesive 2%.
two。 Grass carp feed formula. ① rice bran 40%, wheat bran 38%, bean cake 10%, fish meal 10%, yeast 2%. ② corn meal 70%, fish meal 10%, soybean meal 15%, wheat bran 5%. On this basis, it was added (based on the total amount of basic diet): sweet potato powder 12%, salt 0.5%, auxin 2%, calcium hydrogen phosphate 2%. ⑧ sweet potato rattan powder 80%, bean cake powder 15%, wheat bran 5%. On this basis, it was added (based on the total amount of basic diet): sweet potato powder 12%, salt 0.5%, auxin 2%, calcium hydrogen phosphate 2%.
3. Tilapia feed formula. ① rice bran 45%, bean cake 35%, silkworm pupa powder 10%, secondary powder 8%, bone powder 1.5%, salt 0.5%. ② bean cake 35%, wheat bran 30%, fish meal 15%, barley flour 8.5%, corn flour 5%, locust leaf powder 5%, bone meal 1%, salt 0.5%.
4. Herring feed formula. ① rice straw powder 40%, silkworm pupa powder 30%, rapeseed cake powder 10%, barley flour 20%. ② dried grass powder, cottonseed meal (detoxification) 30%, soybean cake powder 10%, rapeseed cake powder 5%, silkworm pupa powder 5%, fish meal 5%, barley meal 5%.
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Application of fish gum clarifier
Fish glue is a kind of collagen product which is prepared and purified from the swim bladder of tropical and subtropical fish. The triple helix structure of collagen is the active part of fish glue. The fish glue solution can be added in the process of the beer fermentor, or the yeast can be removed and added after the pre-fermentation is completed in the single-pot method. In the pH environment of beer, the positively charged fish gel can attract negatively charged yeast, which can quickly form larger particles and settle to the bottom of the container. Fish gel clarifier can also settle other small particles that can cause turbidity or filtration problems. In beer
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Excessive reproduction of cyanobacteria in Bengtang should be prevented in midsummer.
The high water temperature and strong light in summer is the high incidence season of cyanobacteria. Once cyanobacteria multiply in large numbers on the surface, the water quality will become thinner. It is not easy for pearl clams to digest cyanobacteria after eating cyanobacteria (cyanobacteria cell wall thickness). Cyanobacteria adhere to the clam's costal gills, affecting respiration. At the same time, after the death of cyanobacteria, the protein decomposes to produce hydroxylamine, which combines with toxic substances such as hydrogen sulfide in water, which can cause Yuzhu poisoning and death. Therefore, the excessive reproduction of cyanobacteria should be strictly controlled and targeted control should be carried out in summer. First, the summer temperature is high and the bottom layer is high.
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