Fish feeding techniques

Scientific feeding is not only conducive to the healthy growth of fish, but also can save feed and improve the efficiency of fish farming.

Formulated feeds are based on the type of fish and use palatable compound feeds. General herbivorous fish feed contains 25% to 30% protein, omnivorous fish 35% to 45%, and carnivorous fish 35% to 45%. Feed the feed directly on the food table and feed it according to the principle of “less-more-less” and “slow-fast-slow”. That is, when the feeding is started and near the end, a small amount of slow throw is used. When the fish rushes to eat, they can invest more at a time and the speed can be faster.

According to the seasonal changes, adjust the bait rate. When the water temperature is above 15°C in the spring, the daily feed rate is controlled to about 1% of the fish's body weight. When the water temperature is about 20°C in summer, the daily feed rate is controlled at about 3%. When the water temperature rises above 25~30°C, the appetite of the fish is strong, and the daily feeding rate is controlled at 4% to 5%, but the feed quality must be ensured and overfeeding should be prevented, and the water quality should be adjusted frequently. In autumn, the water temperature has been reduced, but the water quality is still stable, the fish continue to grow, and the daily feeding rate can be controlled at 3% to 4%. In winter, the food intake of fish is reduced. When the weather is fine and the water temperature is above 8°C, it is still necessary to feed a small amount of feed to keep the fish plump.

Green feed Sudangrass, ryegrass, goosegrass, etc. should be timely harvested to avoid stem and leaf aging. Melon leaves, cabbage leaves and other clean before feeding. Feed small fish, chopped or beaten the green feed, add 0.2% salt and mix well, spill and feed. Such as the melon leaves, cabbage and other chopped and cooked, stir in the right amount of bran, soda, fish more like to eat. In general, the amount of fish fed before April is about 10% of the fish's body weight, which gradually increases from May to June to 20% to 30%, and from July to September it is about 50%. The fish is eaten for 2 hours.

Feeding small fish into cake feed should break feed, soak, and grind the feed. Feed the big fish and dip it.

Cereal feed grains, such as corn, should be processed and crushed to feed fish. Small grains, such as grains, can germinate and feed the fish. The young grain white buds have high nutritive value, and the fish eat easily digestible and increase weight.

If the feed is fed to small fish, the feed should be soaked and softened. When feeding big fish, it is advisable to ferment it until it has aroma. The first small amount of feed, after gradually increasing, but not more than 30% of the total daily feed.

Animal feed such as cockroaches, fly pupae, insects, etc., can be fed directly, or dried and processed into powder and then fed with other feeds. Bulk animal feeds should be shredded and ground, and the binder added to form small pellets.

The feces feed will be dried ground into chicken powder, pig feces, cow dung, etc., and then use a certain proportion with other feeds. The proportion is generally 40% to 50% of chicken manure, or 30% to 50% of pig manure or 50% to 70% of cow manure.

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