Powdery compound feed for Anguilla bicolor in elver stage

Abstract

The invention relates to the field of fish feeds and particularly relates to a powdery compound feed for Anguilla bicolor in an elver phase. The powdery compound feed is prepared from the following components in percentage by weight: 49.0%-72.0% of fish meal, 17.0%-38.0% of pregelatinized starch, 1.0%-10.0% of fish oil, 0.5% of multi-mineral, 0.5%-2.0% of calcium dihydrogenphoshate, 0.2% of choline chloride, 0.5% of multi-vitamin and 0.1%-0.2% of coated vitamin C. Compared with a traditional feed, the powdery compound feed has comprehensive nutrition, high protein and low fat and can meet the requirement on nutrition of the Anguilla bicolor in an elver phase; the food coefficient is low and the feed conversion rate is high; the Anguilla bicolor in an elver phase, which is fed with the compound feed, has strong disease resistance and high digestion utilization rate; the production process of the compound feed is similar with that of a common powdery feed and thus the compound feed is convenient to popularize in a large scale.

Description

technical field [0001] The invention relates to the field of fish feed, and more specifically relates to a powdery compound feed for two-color eel juvenile stage. Background technique [0002] bicolor eel ( Anguilla bicolor ), also known as bicolor eel, is widely distributed in tropical and subtropical regions. It is an eel species that eel farmers in various countries have tried to artificially breed in recent years. It has good meat quality, delicious taste, rich in protein and unsaturated fatty acids, and has extremely high economic value. [0003] With the influence of overfishing, the blocking of normal migration channels, and the deterioration of the habitat and growth environment, the resources of traditional two-color eels, including Japanese eels and European eels, have declined sharply. At present, Hainan, Guangdong, Fujian and other places in my country are actively developing Two-color eel breeding industry, in order to replace the traditional eel breeding speci...

AI Technical Summary

Problems solved by technology

However, limited by the scale of breeding and the level of breeding technology, the breeding technology of bicolor eel is still immature, especially the research on the nutritional requirements of bicolor eel is very little, and the feed of bicolor eel is mostly Japanese eel compound feed. This also leads to frequent occurrence of bicolor eel diseases during the breeding process, high bait coefficient, and lack of high-quality feed formula obviously limit the development of bicolor eel aquaculture.

[0004] The Chinese patent with the notification number CN102018144B discloses a powdery compound feed for young Japanese eels, the components of which are partly similar to those of the compound feed of the present invention, and the preparation process of the feed is compared with that of the present invention. It is more complicated to say. In addition, the specification of the authorized patent does not provide intuitive data to prove the impact of the prepared compound feed on the body weight of eels

[0005] The Chinese patent with the notification number CN102771680B discloses a powdery compound feed for the juvenile eel stage of flower eel. The specification of the patent also does not provide intuitive data to prove the effect of the prepared compound feed on the body weight of eels

[0006] At present, although there are patents on the powdery compound feed for the juvenile eel stage of Japanese eel and flower eel, due to the significant difference in physiological characteristics between the two-color eel and the Japanese eel and flower eel, the two-color eel has different requirements for breeding conditions and techniques. Nutritional requirements are also different from Japanese eels and flower eels, so it is necessary to formulate scientific artificial compound feeds according to the physiological characteristics and habits of bicolor eels

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