Epinephelus septemfasciatus parent fish reproduction and maturing bait and preparation method thereof

A grouper and bait technology, applied in animal feed, animal feed, application and other directions, can solve the problems of limited promotion of gonad development, unstable nutritional effect, and ingredients that cannot meet the nutrition required for gonad development, and achieves improved production. Effects of egg volume and egg quality, improving developmental rate, and promoting synchronous development of gonads

Inactive Publication Date: 2013-09-11
MARICULTURE INST OF SHANDONG PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the broodstock breeding of seven-banded grouper uses more traditional fresh baits, such as fresh miscellaneous fish (pieces) or common artificial compound feeds for cultured grouper, etc., and is not used to cultivate broodstock for breeding seven-banded grouper and special bait for gonad stimulation
Although the bait currently used is relatively convenient to obtain, it is not designed for the nutritional needs of the broodstock of the seven-banded grouper. The nutritional effect is unstable, and its ingredients cannot meet the nutrition required for its gonad development. The promotion of gonad development in broodstock for breeding is very limited

Method used

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Examples

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Effect test

Embodiment 1

[0022] In the spring and summer of 2010, in the production of artificial breeding of seven-banded grouper in Longkou City, Yantai, Shandong Province, the screening and cultivation of parent fish of seven-banded grouper and the research on artificial reproductive regulation to promote the gonad development of parent fish were carried out. Green scale sardine, Squid, oyster meat, mackerel and other fresh miscellaneous fish and shellfish meat are used as bait, and the seven-banded grouper parent fish are directly fed. However, the gonad development of the broodstock was not good that year, and only 2 female broodstock had better gonad development among more than 30 broodstock. From the appearance, it can be seen that the abdomen was enlarged, and the ovary felt soft when touched by hands. The fertilized eggs of seven-banded grouper were not obtained that year, so seed breeding failed in 2009.

[0023] In the spring and summer of 2011, in the breeding and production of seven-bande...

Embodiment 2

[0027] In the summer of 2011, in the artificial breeding of seven-banded grouper in Laizhou City, Yantai, Shandong Province, the traditional oyster, squid, mackerel, blue-spotted mackerel, small yellow croaker and other fresh miscellaneous fish and shellfish were used as bait and directly fed. , The development of the broodstock gonads is not good, no spawning is formed, and the production effect is not good. In July 2012, the unit used the broodstock bait formula in the present invention to make bait for use in broodstock breeding. As a result, nearly 10 of the more than 23 broodstocks had mature gonads. A total of more than 4.1 million high-quality fertilized eggs and more than 2.2 million larvae were obtained in that year, and good production results were obtained.

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Abstract

The invention provides an epinephelus septemfasciatus parent fish reproduction and maturing bait and a preparation method thereof. The epinephelus septemfasciatus parent fish reproduction and maturing bait is formed by following components in percentage: 30% of artificially-matched powder feed (main components comprise fish meal, starch, soybean meal powder, peanut bran powder and the like), 10% of opossum shrimp powder, 10% of oyster / mya arenaria linnaens meat (fresh and alive products or chilled products), 20% of sardinella zunasi (chilled products), 3.2% of concentrated micro-mud marimo, 10% of loligo japonica (fresh and alive products or chilled products), 10% of clam worms (fresh and alive products or chilled products), 5% of brine shrimp powder, 0.5% of compound vitamin, 0.4% of astragalus membranaceus powder, 0.4% of lecithin powder and 0.5% of immune polysaccharides. The bait disclosed by the invention not only can guarantee the nutritional requirement of parent fish, but also can effectively improve the developmental rate of parent fish sexual glands, accelerate the sexual glands to synchronously develop and improve the egg laying amount and the ovum quality of female parent fish, so as to lay a foundation for large-scale larval rearing of epinephelus septemfasciatus.

Description

technical field [0001] The invention relates to a method for cultivating fish and a method for preparing bait, in particular to a bait for promoting maturation of broodstock of seven-banded grouper and a preparation method thereof. Background technique [0002] Seven-banded Grouper ( Epinephelus septemfasciatus ) is commonly known as seven-banded spot, true fat, roe fish, grouper, tiger spot, and cross fish. It belongs to Actinopterygii, Perciformes, Serranidae, and grouper belongs to Epinephelinae because of its unique appearance and body color pattern. Very easy to distinguish. Seven-banded grouper is an important rare seawater fish in cold-temperate sea areas. Its meat is fresh and tender, rich in nutrition, high in economic value, wide in adaptability, fast in growth, able to grow in warm and cold water, strong in disease resistance, and easy to domesticate. And other characteristics, the market at home and abroad is vast, and it has great promotion prospects. With th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/14A23K1/10A23K1/18
Inventor 关健
Owner MARICULTURE INST OF SHANDONG PROVINCE
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