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Multi-parental hybrid breeding method of tilapia

A technology for hybrid seed production and tilapia, which is applied in the field of multi-hybrid tilapia seed production, can solve the problems of low seedling quantity, unstable male rate, influence on the utilization of Neo's hybrid vigor and hybrid promotion, etc. High, high offspring male rate, the effect of improving offspring male rate

Active Publication Date: 2015-04-29
广东伟业罗非鱼良种有限公司 +1
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

But in actual production, Nile tilapia♀×Olia tilapia Hybridization also has the phenomenon of low seedling emergence and unstable male rate, which affects the utilization of hybrid vigor and the promotion of hybrids to a certain extent.

Method used

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  • Multi-parental hybrid breeding method of tilapia

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Embodiment 1

[0023] 1 Materials and methods

[0024] 1.1 Test material

[0025] The experimental parents of tilapia were provided by the Weiye Tilapia Breeding Farm in Maoming City, Guangdong Province, including the new Jifu strain Nile tilapia (selected by Shanghai Ocean University F15), the Sudan strain Nile tilapia (bred from Sudan in 2008 Introduced from the confluence of the White Nile and the Blue Nile), the Maoming strain Olia tilapia (introduced by the Guangzhou Fisheries Research Institute in 1981) and the Israeli strain Olia tilapia (introduced from the Pearl River Fisheries Research Institute in 2003, derived from Israel). In July 2013, the intraspecific binary hybrid parents of Nile tilapia and Oria tilapia were prepared respectively, Nile tilapia: New Gifu♀×Sudan 、Sudan♀×Xin Jifu , Olia tilapia: Israel ♀×Maoming , Maoming♀×Israel . After emergence in August, they were cultivated in outdoor cement pools (5×9×1.5m), fed with compound feed for tilapia, with an average d...

Embodiment 2

[0049] A kind of embodiment of tilapia multi-parent hybridization seed production method of the present invention, described seed production method comprises the following steps:

[0050] (1) take the female fish in the new Jifu strain Nile tilapia as the female parent, and the male fish in the Sudan strain Nile tilapia as the male parent to carry out intraspecific hybridization to obtain the offspring generation Nile tilapia;

[0051] (2) With the female fish in the Nile tilapia of the daughter generation obtained in step (1) as the female parent, the male fish in the Maoming strain Oria tilapia is the male parent to carry out interspecific hybridization to obtain hybrid offspring Generation, namely said tilapia.

Embodiment 3

[0053] A kind of embodiment of tilapia multi-parent hybridization seed production method of the present invention, described seed production method comprises the following steps:

[0054] (1) take the female fish in the new Jifu strain Nile tilapia as the female parent, and the male fish in the Sudan strain Nile tilapia as the male parent to carry out intraspecific hybridization to obtain the offspring generation Nile tilapia;

[0055](2) With the female fish in the Nile tilapia of the first generation obtained in step (1) as the female parent, and the male fish in the Israeli strain Oria tilapia as the male parent, carry out interspecific hybridization to obtain hybrid offspring Generation, namely said tilapia.

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Abstract

The invention provides a breeding method of tilapia. The breeding method comprises the steps of performing intra specific hybrid breeding for new Gift tilapia and Sudan tilapia to obtain the first filial generation tilapia; performing interspecific hybrid breeding by using raun of the first filial generation tilapia as a female parent and milter of blue tilapia as a male parent to obtain the hybrid generation which is the tilapia. According to the method, the breeding technology combining specific hybrid breeding and interspecific hybrid breeding of tilapia is adopted; various outstanding properties are collected; therefore, the output of fries and male rate of the later generations are increased, and as a result, the breeding output and benefits of tilapia are increased. The invention further provides tilapia bred through the breeding method; the tilapia has the advantages of being high in output of fries and male rate of the later generations.

Description

technical field [0001] The invention relates to a seed production method of tilapia, in particular to a seed production method of multivariate hybrid tilapia. Background technique [0002] Tilapia is one of the main species of freshwater aquaculture in my country, and it is also an important export aquatic product species (see Li Sifa. The development prospects and bottlenecks of my country's tilapia industry [J]. Science Fish, 2003, 12 (9): 3 -5.). Due to the significant difference between the growth of female and male fish, single (male) breeding has obvious economic benefits. Interspecific hybridization is the safest and most practical biological method for large-scale parthenogenesis of tilapia. A large number of experiments have shown that Oreochromis niloticus♀×O.aureus The hybrid vigor obtained by the hybrid combination is the most obvious. The first generation of hybrids not only has a high male rate, but also has a fast growth rate (see Li Sifa, Chen Lin, Cai Wanq...

Claims

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Application Information

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IPC IPC(8): A01K61/00A01K61/10
CPCA01K61/00Y02A40/81
Inventor 简伟业伍勇赵金良
Owner 广东伟业罗非鱼良种有限公司
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