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What is the optimal protein level in fish feed?

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Protein is the main nutritional indicator of compound feed for fish, and the protein level directly affects the intrinsic quality of the fish feed. Different fish species and different growth stages have different optimal protein requirements. Too high a protein content not only wastes feed protein resources, but also increases the pressure of pond water quality management. Too low a protein content, on the one hand, causes slow fish growth and poor disease resistance, and on the other hand, delays production timing. Therefore, mastering the optimal protein level of fish feed is of great

Protein is the main nutritional indicator of compound feed for fish, and the protein level directly affects the intrinsic quality of the fish feed. Different fish species and different growth stages have different optimal protein requirements. Too high a protein content not only wastes feed protein resources, but also increases the pressure of pond water quality management. Too low a protein content, on the one hand, causes slow fish growth and poor disease resistance, and on the other hand, delays production timing. Therefore, mastering the optimal protein level of fish feed is of great benefit to guiding fishery production.

1. Carp feed. Carp is the most common farmed fish in our province, and carp feed accounts for more than 90% of the province's total fish feed production. The optimal protein content of feed at the fry and fingerling stage is 40%-45%, the optimal protein content of feed at the fingerling stage is 35%-40%, and the optimal protein content of feed at the adult fish stage is 30%-35%.

2. Grass carp feed. With the promotion of grass carp immunization injection technology, grass carp farming has gradually been accepted by many farmers in our province. The optimal protein content of feed at the grass carp fingerling stage is 30%, and the optimal protein content of feed at the adult fish stage is 22%-25%.

3. Blunt snout bream feed. Blunt snout bream, also known as Wuchang bream, has nutritional requirements similar to those of grass carp. The optimal protein content of feed at the fingerling stage is 25%-30%, and the optimal protein content of feed at the adult fish stage is 22%-25%. 4. Tilapia feed. This fish is a warm-water fish, and due to its relatively short growth period, the optimal protein content of feed throughout its growth is 30%-31%. 5.@#@241@#@ feed. This fish is a cold-water fish. The optimal protein content of feed at the fry stage is 45%, the optimal protein content of feed at the fingerling stage is 40%-45%, and the optimal protein content of feed at the adult fish stage is 30%-35%. 6. Channel catfish feed. The optimal protein content of feed at the fry stage is 35%-40%, the optimal protein content of feed at the fingerling stage is 30%-35%, and the optimal protein content of feed at the adult fish stage is 28%-35%.

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