Compound feed for river crabs and preparation method of compound feed

Abstract

The invention belongs to the breeding field and particularly relates to a compound feed for river crabs and a preparation method of the compound feed. The compound feed contains the following components in parts by weight: 10-15 parts of bean pulp, 5-10 parts of peanut meal, 10-15 parts of meat meal, 20-25 parts of domestic fish meal, 20-30 parts of flour, 1-5 parts of sleeve-fish cream, 0.1-0.5 part of soybean oil, 1.0-1.5 parts of phospholipid oil, 1-5 parts of calcium dihydrogen phosphate, 1-5 parts of bentonite, 1-5 parts of spray-dried blood cells, 0.1-0.5 part of an adhesive, 0.1-0.5 part of choline, 0.1-0.5 part of a shelling element, 0.01-0.05 part of Yuxiahuan, 0.01-0.05 part of carnitine, 0.2-0.5 part of amino acid, 0.3-0.4 part of compound vitamins and 0.2-0.6 part of compound microelements. By mixing and matching various nutrients, the compound feed can meet the nutrition requirements of the river crabs from a megalopa stage to a crablet stage, and the nutrition full-value performance of the product is improved; meanwhile, by carrying out micro-grinding and post-curing treatment, the stability of the pellet feed is improved, and the digestibility of internal nutrients is increased; by carrying out curing treatment, the palatability of the feed can be improved, and the feed intake is increased; and the unit yield of the bred river crabs is increased, and the benefit of farmers is increased.

Description

technical field [0001] The invention belongs to the field of breeding, and in particular relates to a river crab compound feed and a preparation method thereof. Background technique [0002] River crab is a unique aquatic product in my country. It is well-known at home and abroad for its high nutritional value and unique flavor, and has become an important product for my country's export earnings. With the rapid development of river crab aquaculture, the quality requirements for compound feed are getting higher and higher. [0003] Different from the direct eating method of ordinary fish, river crabs take food slowly for cuddling, so the dissolution time of river crab compound feed in water is required to be longer, even more than 12 hours. At present, the common methods to improve the stability of river crab feed in water are to increase the granulation preparation time and ring die compression ratio, and to use binders, but these methods are limited by the current feed pr...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a river crab compound feed and its preparation method, which is developed for the nutritional needs of river crabs from megalopa to larvae, and overcomes the poor stability and low digestibility of river crab compound feed in water. The problem is that the feed conversion rate is high and the stability is good, which improves the output of unit cultured crabs and the benefits of farmers