Meet fish nutrition, ensure feed quality, and effectively promote the rapid growth of high-quality fish species in a high-quality environment.
In the newly hatched larvae, the fish mostly use plankton in water, especially zooplankton, as bait. Cultivating water quality at this stage and breeding enough plankton for feeding larvae are crucial for raising the survival rate of larvae. As the fish body grows and develops, and enters the fingerling stage, the feeding performance changes and differentiates.
The grass carp and the head lice, the larval stage, use zooplankton as the main food intake, and they migrate to omnivorousness at the young fish (fish species) stage. As the development of the digestive system continues to improve, when the grass carp up to 7 to 10 centimeters, head lice up to 4 to 5 centimeters, they turned to herbivorous, that is, aquatic plants as the main bait. Grass carp likes to eat black leaf algae, Malayan caterpillar, bitter grass, etc.; group head cicada eats black leaf algae, bitter grasses, especially likes to eat the leaves of aquatic vascular plants. Under feeding conditions, these two fishes can ingest terrestrial plant roots, bean cakes, rapeseed cakes, cottonseed cakes, rice bran, wheat bran, barley, corn, fish meal, etc., and they also like to eat artificial compound feeds.
Salmon and trout are typical filter-feeding plankton fish. In addition, they also filter organic humus and bacteria. Under feeding conditions, artificially fed feeds such as bean cakes, rapeseed cakes, bean dregs, wheat bran, fishmeal, and artificial pelleted feeds can also be ingested, as well as soybean milk and straw pulp.
The herring and juveniles mainly feed on zooplankton. When they are 15 centimeters in length, they start to feed small snails and clams. The food composition of adult fish is almost entirely molluscs, benthic shrimp, aquatic insects and larvae. Under feeding conditions, herring eats snails, alfalfa and various types of cakes, cocoons, bran, grain and formulated pellet feed. However, it belongs to carnivorous fish. When formulating pellet feed, it must contain appropriate amounts of animal feed such as fish meal, silkworm meal, blood meal, etc., and the crude protein content should be 35% to 40%.
In the natural waters, squid are mainly fed with animal diets, mainly including chironomid larvae, snails, river otters and other benthic animals, aquatic insects, and shrimps. They also like to eat seeds, young shoots and plants of higher aquatic plants. Crumbs. Under feeding conditions, carp can eat a variety of commercial feeds and compound feeds, but the requirement for crude protein in feed is higher than that of grass carp and group carp, ranging from 32% to 38%, and animal protein accounts for a sufficient proportion.
Carp and silver carp, usually based on plant foods, such as water grass, diatoms, filamentous algae, organic debris, etc., also eat snails, chironomid larvae, leech, Cladocera and copepod zooplankton.
Carp, belonging to carnivorous fish, likes to eat small fish, shrimp, crabs, snails, crickets, clams, rotifers, aquatic insects, and dead bodies of terrestrial animals. The feeding habit of squid has obvious stages: White larvae mainly eat larvae of rotifers, leeches, leeches, aquatic insects, and also feed on shellfish and organic debris. A 5-gram cub began chasing seedlings, shrimp, or biting various animal carcasses. Under feeding conditions, larvae are mainly fed with leeches, and tilapia and compound feeds can be fed at other times, and compound feeds are mainly fed during seedlings and adult stages.
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