How to treat vitamin deficiency in fish
Vitamin A: lack of vitamin An in fish can cause poor vision, dry eye disease, night blindness, skin and eye bleeding, epithelial tissue keratosis, bleeding at the base of the fin, Gill deformity, Gill valve often linked together, tip hypertrophy, abnormal bone development, loss of appetite, slow growth. In view of these symptoms, it is necessary to increase the content of vitamin An in fishing feed, combined with the use of vitamin mixtures. If raising herbivorous and omnivorous fish, you can add and match green feed, carrots and yellow corn in the feed.
Vitamin B: fish lacking vitamin B1 do not eat, fish muscle atrophy, convulsion, edema, slow growth, loss of balance; fish lacking vitamin B2 do not eat, slow growth, eye bleeding, lens turbidity, abnormal swimming, anemia Fish lacking vitamin B6 do not eat, nervous system disorder, epilepsy, anemia, abdominal edema, shortness of breath, soft and deformed operculum, exophthalmos, abnormal swimming, rotational movement; fish lacking vitamin B12, loss of appetite, decreased hemoglobin, red blood cell fracture, pelvic blood, skin, eyes and fins are often congested, slow movement, movement disorders, body color darkening, increased mortality. Feed formulations need to be adjusted, mixed vitamins added to fish feed or symptomatic increase in the amount of B vitamins. At the same time, we should feed more feed rich in vitamin B, such as green fodder, beer yeast, fish meal, rice bran, cake, wheat bran, @ # @ 245mm powder, meat and bone meal and so on.
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Eight treasures fresh soup fish swallow
The basic materials send out six taels of fish and swallows. Brief introduction of Lentinus edodes, Crab fillet, Jinhua Ham, Meretrix Meretrix, Shrimp Salt, Monosodium glutamate and White Pepper: fish swallow is made from natural fresh sea eel and stuffed with fresh shellfish, abalone head, dried fish and so on. This product is a combination of Fujian capital and Hong Kong and Guangdong flavor, can be called a unique food world! Yuyan series products are very popular in the catering market recently. Because this kind of dishes are easy to operate and sell like generous, and the taste is very delicious, very
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Matters needing attention in Freshwater Shark Culture in North China
Freshwater sharks are mainly distributed in Southeast Asia. According to body color, freshwater sharks can be divided into four types: black shark, white shark, gray shark and red shark. The sharks of the first three body colors are mostly raised as edible fish, with gray sharks growing the fastest, and red sharks also known as crystal Pattinus. In the juvenile stage, they are mostly raised as ornamental fish. The freshwater shark is a tropical fish with an optimum growth temperature of 20 ℃ and an optimum water temperature of 22 ℃. The freshwater shark has a weak tolerance to low temperature. When the water temperature drops below 18 ℃, the food intake and activity of the fish decrease obviously, and the water temperature decreases obviously.
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