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Artificial mature-promoting culturing method for epinephelus lanceolatus parent fish

A breeding method and technology of saddle grouper, applied in the field of artificial maturation of saddle grouper broodstock, can solve the problems of unsatisfactory synchronous maturation of saddle grouper broodstock, poor gamete quality, and few maturation techniques, etc. To achieve the effect of improving utilization rate and production capacity

Inactive Publication Date: 2005-09-07
SUN YAT SEN UNIV
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Problems solved by technology

Some countries and regions in the world have carried out research on artificial breeding, seed breeding, and hormone-induced sex conversion of other groupers, but there are not many mature technologies that can be applied in production
At present, it mainly relies on fish oxytocic agents to promote maturation, and there are problems such as unsatisfactory synchronous sexual maturation of saddle grouper broodstock and poor quality of gametes (sperm and eggs).

Method used

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  • Artificial mature-promoting culturing method for epinephelus lanceolatus parent fish
  • Artificial mature-promoting culturing method for epinephelus lanceolatus parent fish
  • Artificial mature-promoting culturing method for epinephelus lanceolatus parent fish

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Embodiment 1

[0021] From 1999 to 2001, a total of 627 2-3kg saddle groupers were purchased from Hainan and Taiwan. After several years of domestication and artificial breeding, by 2004, there were 213 individuals that could be selected as broodstock, weighing 8 to 63 kg. In the fishing raft of Longqizhuang Industrial Development Co., Ltd., Dapeng Bay Sea Area, Shenzhen City, broodstock were cultivated in sea area net cages. The size of the net cage was 5m×3m×3m. The cultivation time was from February 2004 to April 2004. Fresh oysters And crabs are used as bait, cast twice a day, and the bait rate is 4%. Add 7g of yeast cell wall, 7g of inorganic salt mixture, 3g of phytase, 1.5mg of methyl testosterone, and multivitamins (mainly containing vitamins) per kilogram of bait. C, vitamin E) 3g and α-starch 12.5g binding feed. The water temperature in the sea area ranges from 13 to 27°C, and the salinity ranges from 2.5% to 3.0% by mass fraction.

[0022] In March 2004, 76 male broodstock were ...

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Abstract

The invention relates to an artificial forced mature method to girth rockfishes, characterized in that adding yeast cell wall, mixture with abio salinous, phytic acid enzyme and methyl testis ketone, etc, into bait to force male parent fish to mature in web box on sea and enhanced feed in doors' pool, then by injecting DOM and ecology stimulus forces parent fish gonad to mature and oviposit naturally. This invention can achieve artificial control on parent fish sex of girth rockfishes with at least 70% triumph rate on sex adjustment. Meanwhile young functional male fish gained can be also used to production, which makes more than 50% parent fish come to sex mature and oviposit naturally and obtains mass high class gamete, thereby improve utilization rate of parent fish and productive capacity.

Description

technical field [0001] The invention relates to a method for cultivating broodstock of saddle grouper, in particular to a method for artificially promoting maturation of broodstock of saddle grouper. Background technique [0002] Saddle banded grouper (Epinephelus lanceolatus) belongs to Perciformes (Perciformes, Serranidae), grouper subfamily (Epinephelinae), grouper genus (Epinephelus), also known as gentian grouper. This is the grouper It is the largest one in the species and is known as the king of groupers. [0003] Since the grouper is a hermaphroditic protogyn fish, there is a process of sex conversion before the senior fish turns into a male fish, and the source of male fish is relatively difficult. Therefore, obtaining the technology of inducing the gonad development and synchronous maturation of the saddle grouper is the basis for realizing the artificial propagation and fry cultivation of the saddle grouper. [0004] At home and abroad, the technology of inducin...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 黎祖福
Owner SUN YAT SEN UNIV
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