How to Prevent and Treat Vitamin Deficiency in Fish? A Detailed Guide to Practical Methods

Vitamin A group: When fish lack vitamin A, it causes poor eyesight, dry eye disease, night blindness, bleeding of the skin and eyes, keratinization of epithelial tissue, bleeding at the base of the fins, deformed gill lamellae that often fuse together with enlarged tips, abnormal bone development, loss of appetite, and slow growth. To address these symptoms, increase the vitamin A content in fish feed and use vitamin blends in combination. For example, when raising herbivorous and omnivorous fish, green fodder, carrots, and yellow corn can be added to and combined with the feed.

Vitamin B group: Fish lacking vitamin B1 stop eating, and their muscles atrophy, with convulsions, edema, slow growth, and loss of balance; fish lacking vitamin B2 stop eating, grow slowly, have eye bleeding, cloudy lenses, abnormal swimming, and anemia; fish lacking vitamin B6 stop eating and show nervous system disorders, epilepsy, anemia, abdominal edema, rapid breathing, soft and deformed gill covers, bulging eyes, abnormal swimming, and spinning movements; fish lacking vitamin B12 have reduced appetite, lowered hemoglobin, ruptured red blood cells, anemia, frequent congestion of the skin, eyes, and fins, slow movement, loss of coordination, darkened body color, and increased mortality. The feed formula needs to be adjusted by adding mixed vitamin preparations to fish feed or increasing the amount of B vitamins according to the symptoms. At the same time, more feed rich in B vitamins should be given, such as green fodder, brewer's yeast, fish meal, rice bran, oilseed cake meal, wheat bran, @#@245@#@ powder, and meat-and-bone meal.