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Artificial reproduction method for Pseudobagras ussuriensis

A technology of artificial reproduction and Ussuri, which is applied in fish farming, application, climate change adaptation, etc. It can solve the problems of germplasm resource destruction and inconformity with the development direction of sustainable sea bream, and achieve high sperm maturity and fertilization rate Guaranteed effect

Inactive Publication Date: 2013-11-27
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the artificial reproduction method of killing the male fish and extracting the sperm in the prior art is a great damage to the germplasm resources, and is not in line with the sustainable development direction

Method used

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  • Artificial reproduction method for Pseudobagras ussuriensis
  • Artificial reproduction method for Pseudobagras ussuriensis
  • Artificial reproduction method for Pseudobagras ussuriensis

Examples

Experimental program
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Effect test

preparation example Construction

[0049] The preparation method of the artificial compound feed containing testosterone hormone is: mix a small amount of flour in warm boiled water to form a thin paste, then evenly mix 17α-methyltestosterone (white powder, odorless, tasteless) into the thin paste, and then Fully mix this thin paste with artificial compound pellet feed to obtain artificial compound feed containing testosterone hormone, and finally put it in a cool and ventilated place to dry and then feed it.

[0050] Broodstock rearing ponds must be fed with artificial compound pellets with a protein content greater than 20%. Set up a bait platform in the parent fish pond, and position and feed on the bait platform. At 9:00 am and 17:00 pm, 30% and 70% were fed respectively. It is advisable to feed the amount of bait in 60 minutes each time. Pay attention to observe the activity of the fish when feeding the bait, and do not feed the bait excessively. See Table 1 for the daily feeding amount. When the water ...

Embodiment 1

[0073] The inventor did the first experiment according to the above-mentioned technical scheme from February to June, 2010, and its specific implementation method is as follows:

[0074] (1) Selection of broodstock

[0075] In February, 660 male broodstock (average 215.3 g per fish) were selected from 3-year-old and above Ussuri broodstock with large individuals, strong physique, no disease, complete fin rays, and no damage.

[0076] (2) Breeding of broodstock

[0077] The female and male broodstock were put into different breeding ponds for cultivation. From April 22 (when the pond water temperature reached 17°C), 17α-methyltestosterone (17α-MT) was added to the breeding ponds of the male broodstock. The artificial compound feed was fed continuously for 30-36 days (1 and 2 batches of artificial breeding were continuously fed for 30 days, and artificial breeding batches 3 and 4 were continuously fed for 36 days, Table 3). The artificial compound feed containing 17α-methyltes...

Embodiment 2

[0085] The inventor has done the second experiment according to the above-mentioned technical scheme from February to June, 2011, and its specific implementation method is as follows:

[0086] (1) Selection of broodstock

[0087] In February, large, healthy, disease-free, complete fin rays and no damage were selected from 3-year-old and above Ussuri broodstock. Among them, 854 male broodstock (average 206.5 g per fish).

[0088] (2) Breeding of broodstock

[0089] The female and male broodstock were put into different breeding ponds for cultivation. From April 22 (when the pond water temperature reached 17°C), 17α-methyltestosterone (17α-MT) was added to the breeding ponds of the male broodstock. Artificial compound feed, continuous feeding for 28-38 days (artificial breeding 1, 2 batches of continuous feeding for 28 days, artificial breeding 3, 4 batches of continuous feeding for 32 days, artificial breeding 5, 6, 7 batches of continuous feeding 38 days. Table 4). The arti...

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Abstract

The invention discloses an artificial reproduction method for Pseudobagras ussuriensis and aims to solve the problem in the prior art that the maturity of male adult Pseudobagras ussuriensis gonads is poor under routine parent fish breeding and induced spawning conditions and the artificial reproduction is implemented by killing fish and collecting sperms. The method allows natural maturity, natural spermiation and estrus of male Pseudobagras ussuriensis by adding exogenous hormones and changing environmental conditions. Besides, the sperms resulting from natural spermiation have a high degree of maturity, which provides guarantee for fertilization rate. Both natural fertilization and artificial fertilization can successfully produce a large amount of fertilized eggs. More importantly, male and female parent fish are not injured and both applied to artificial reproduction production in the next year, which provides germplasm support for seed preservation and breeding of Pseudobagras ussuriensis. The invention overcomes the problem in the prior art that the artificial reproduction is implemented only by killing fish and collecting sperms.

Description

technical field [0001] The invention relates to an artificial propagation method of edible fish, in particular to an artificial propagation method of Ussuri breamus. Background technique [0002] Pseudobagrus ussuriensis belongs to the order Silurformes, Bagridae, and the genus Pseudobagrus. It is distributed in the water systems from the Heilongjiang to the Pearl River in my country, as well as in the Taihu Lake and the flood waters of the Yangtze River and Huaihe River systems in my country. Zehu and other waters, but its resources have decreased sharply in recent years. The fish has tender meat, delicious taste, no intermuscular thorns, and strong market demand; it has a wide appetite, strong temperature adaptability (temperature resistance of about 0-36°C), less disease, and faster growth, and is very popular among consumers and farmers. I like it, and the future of breeding is very broad. Therefore, it is necessary to carry out its artificial breeding and commercial fi...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 黄鹤忠周凤建强小刚贾一何
Owner SUZHOU UNIV
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