Crab feeding requirements
There are three types of feeds that are commonly used in river crab breeding: compound feeds, plant feeds, and animal feeds. The specific requirements and types of the three types of feeds are as follows: The compound feeds required for aquaculture should meet the growth and nutrition requirements of river crabs, and comply with the regulations of “NY5072-2001 Pollution-free food and fish feed compound feed safety limit†and “GB13078-2001 Feed Hygiene Standardsâ€. The feed. Plant feeds should use moldless corn, wheat, bean cakes, and various fresh water plants. Animal feed should use non-polluting live snails, live river clams, fresh fish, etc.
Feeding crabgrass on the nets should be adjusted according to the nutrient requirements of the growth of the crabs, the water quality of the surrounding area and the natural food. The overall principle should follow the ratio of animal feed ratio of 7:3 in mid-June, 5:5 in late June to mid-August, and 8:2 in late August to mid-October. Care should be taken during June and August. The number of aquatic grasses in the net enclosure area should not be supplemented if it is insufficient. The daily feed intake should be 3% to 6% of crab weight. Feeding twice a day is appropriate every day at 7 a.m. and 4 p.m., accounting for 30% to 40% of the total in the morning and 60% to 70% of the total in the afternoon. Special attention is paid to the fact that fresh live animal feed should be thrown at any time to avoid deterioration.
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