How to increase fish growth speed? Practical aquaculture methods shared
Add mugwort leaves. Mugwort leaves (Artemisia argyi) are a widely distributed plant, containing protein, fat, vitamins, and various essential amino acids, minerals, and more. According to experiments, adding 5% mugwort leaves to feed can increase the weight gain rate of 1-year-old pond-cultured common carp by 15.4%-22.4%, and the weight gain rates of silver carp and bighead carp cultured in the same pond are also significantly increased; the weight gain rate of 1-year-old common carp in cage culture can be increased by 14.5%.
Add @#@254@#@ Earthworms contain 50.4%-65.8% crude protein, with a complete range of amino acids, especially limiting amino acids, and are also rich in vitamins. Because earthworm meat has a special odor, it easily attracts and stimulates fish appetite; adding 5% earthworms to compound feed can significantly reduce the feed conversion ratio of tilapia, and increase economic benefits by 74.5%. Adding 7.14%-10% dried earthworms to compound feed can increase the growth speed of common carp by 63%.
Add vitamins. Vitamin C: when raising common carp, add 700 mg of vitamin C per kg of feed; when raising eel, add 500 mg of vitamin C per kg of feed; the weight gain effect is very significant. Adding 60 g of vitamin C per kg of feed for catfish can increase daily weight gain by 50% and save 29% of feed. Vitamin E: add vitamin E to fish feed so that the vitamin E content per kg of feed is 40-70 mg, which can increase the daily weight gain of fish by more than 10%.
Add photosynthetic bacteria. Photosynthetic bacteria used as feed additives for fish, shrimp, soft-shelled turtles, and shellfish can increase the survival rate of these animals by 45%-70%. Used for fry and fingerling cultivation of freshwater fish, it can increase the survival rate by 6.53%, increase the growth rate by 15.2%, increase the weight gain rate by 25.2%, and reduce the feed conversion ratio by 25.96%. Usage methods: 1. Add to feed. Spray the well-propagated photosynthetic bacteria liquid onto the feed and mix evenly; the amount of bacterial liquid used is 1% of the amount of feed fed, and it should be prepared and used immediately. 2. Spray into water bodies. Spraying photosynthetic bacteria into water bodies can improve water quality, prevent and treat fish diseases, and cultivate beneficial algae. Choose a sunny day, dilute the well-propagated photosynthetic bacteria liquid with pond water, and splash it evenly over the whole pond; use 5-10 mL of photosynthetic bacteria liquid per cubic meter of water, and each mL of bacterial liquid should contain 1 billion-1.5 billion photosynthetic bacteria. The frequency of applying photosynthetic bacteria is determined according to water quality conditions. If water quality is good, apply once every 15 days; if water quality is poor, especially for high-yield ponds in the later stage of aquaculture, apply once every 7-10 days. The well-propagated photosynthetic bacteria liquid should be used as soon as possible; storage at room temperature should not exceed 2 weeks, and metal containers must not be used for storage.