Introduce three kinds of high-quality fish feed

After the fermentation of cow dung, it has the special odor of yeast and it is powdery. It is a full-price high-quality fish feed. It was determined that the fermented cow manure contained 30.4% crude protein, 5.1% crude fat, 9.9% crude fiber, 25.9% nitrogen-free extract, and rich nutrition. The method of fermenting cow dung is: using 30% cow dung as the base material, mixing with 70% of the pig's compound feed, and then mixing the mixed yeast with the cultivated yeast in a ratio of 1:500, and adding water to the handgrip. It is advisable to have water in the fingers but not to drip, and finally seal it with plastic film. Fermentation time depends on the temperature conditions, 20-23 °C fermentation 7-9 days, 23-31 °C fermentation for 4 days, 31 °C above fermentation for 1 day, you can feed fish.

Second, watermelon rind

The watermelon rind contains sugar and crude protein, crude fat, crude fiber, chlorophyll and other nutrients needed by fish. It also contains vitamins such as carotene, thiamine, riboflavin, niacin and ascorbic acid, and calcium, phosphorus and iron. And other mineral salts. As the harvest of watermelons is mainly concentrated in July-August, the direct use of watermelons is limited. Therefore, it is necessary to store them in order to make full use of them and play a role in feeding.

There are two common ways to use fresh and dry feed: (1) fresh feed. After the collected watermelon rind is beaten with a beater, (to be fine, it is suitable for fish species to swallow), Quanchiposa, cultivated oysters, oysters, grass, squid species, etc., 2 times a day, according to water quality, per acre The surface of the water is splashed with 80-90 kilograms of watermelon rind every day, or 60-80 kilograms of watermelon rind per thousand fish. In this way, the fish can directly ingest the watermelon rind. At the same time, the watermelon rind can also be used to cultivate water quality. To cultivate natural food effects. (2) dry feed. The watermelon rind is shaved with a planer and dried and ground into a powder. The watermelon rind powder is 2-3 kilograms per mu of fish seedlings per day, and the application is performed three times per day, and the effect of feeding with other feeds is better.

Three, grass cultivation fish

Adopting grass and fish farming is an effective way to solve fish feed, reduce fish feed costs, and increase the economic benefits of fish farming. When the green feed is planted, as long as it is scientifically arranged and the seasons converge, green feed can be used year round to meet the needs of fish. The high quality pastures used for fish farming include ryegrass, sudangrass, leeks, coriander, bitter leeks, pennisetum, red and white clover. The annual output of these pastures is between 2500-5000 kg per mu. If the leek is rich in nutrients, its crude protein content is 35-40% higher than that of Sudangrass, which is known as the “king of forages”. The young leaves of leeks contain a lot of carbohydrates, good palatability, utilization rate is almost as high as 100%, and it is the best green feed for fish. Amaranth is the best “green forage” that can be used as a “grainy food” for herbivorous fish and can also be used to cultivate blues, grasses, and grasshoppers before the off season of ryegrass and the arrival of the Sudan grass season. The "food" of other species.

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