Genetic evaluation and investment appraisal of the multi-trait selection breeding program in Chinese shrimp <em>Fenneropenaeus chinensis</em>

LUAN Sheng; JIN Wu; KONG Jie; LUO Kun; MENG Xianhong; ZHANG Tianshi; WANG Qingyin

doi:10.3969/j.issn.0253 4193.2013.02.014

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LUAN Sheng, JIN Wu, KONG Jie, LUO Kun, MENG Xianhong, ZHANG Tianshi, WANG Qingyin. Genetic evaluation and investment appraisal of the multi-trait selection breeding program in Chinese shrimp Fenneropenaeus chinensis[J]. Haiyang Xuebao, 2013, 35(2): 133-142. doi: 10.3969/j.issn.0253 4193.2013.02.014

Citation:

LUAN Sheng, JIN Wu, KONG Jie, LUO Kun, MENG Xianhong, ZHANG Tianshi, WANG Qingyin. Genetic evaluation and investment appraisal of the multi-trait selection breeding program in Chinese shrimp Fenneropenaeus chinensis[J]. Haiyang Xuebao, 2013, 35(2): 133-142. doi: 10.3969/j.issn.0253 4193.2013.02.014

Citation:

LUAN Sheng, JIN Wu, KONG Jie, LUO Kun, MENG Xianhong, ZHANG Tianshi, WANG Qingyin. Genetic evaluation and investment appraisal of the multi-trait selection breeding program in Chinese shrimp Fenneropenaeus chinensis[J]. Haiyang Xuebao, 2013, 35(2): 133-142. doi: 10.3969/j.issn.0253 4193.2013.02.014

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Genetic evaluation and investment appraisal of the multi-trait selection breeding program in Chinese shrimp Fenneropenaeus chinensis

doi: 10.3969/j.issn.0253 4193.2013.02.014

1.
Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
2.
Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization, Ministry of Agriculture, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081, China

Received Date: 2012-05-02
Rev Recd Date: 2012-09-26

Abstract

Abstract

The genetic gain and economic benefit from a multi-trait breeding scheme with Chinese shrimp (Fenneropenaeus chinensis) were calculated after performing 20 selections. The breeding object was made up of harvest body weight (BW), survival rate (SR) and feed intake (FI), but the trait FI was not included in the selection index. Selection response and genetic gain of the breeding object were estimated based on selection index theory. Economic benefit was predicted after nucleus shrimp was multiplied by a pyramid breeding structure (nucleus, multiplication and production populations). The sensitivity of profit (RP) and benefit/cost ratio (BCR) to a number of factors were examined. It comprises biological parameters (heritability value, accounting for feed intake), economic parameters (price of shrimp, price of feed, discount rate, initial investment, annual cost), and operational parameters (the year when first return occurs, multiplication efficiency). For the base situation, selection responses on BW, SR and FI were 0.81 g,1.41% and 1.30 g, respectively; their economic values were CNY 32, CNY 20 and CNY-8, respectively; the overall gain in economic units for the breeding object was CNY 43.69; the RP and BCR of this program were CNY 8 660.99 and 14.34 after preforming 20 selections. Heritability values had a moderate effect for RP and BCR. Greater heritabilities resulted in greater RP and BCR. The RP and BCR were greater than those of base situation when the economic value of FI was set as 0. RP and BCR were sensitive to the change of the shrimp price. The changes from the feed price, discounted rate and annual cost had a relatively small effect on RP and BCR. Initial investment also had a small effect on RP, but had a great effect on BCR. Delays in obtaining the first return in this program resulted in reduced EB and BCR. However, the greatest contribution to variations in RP and BCR came from the improvements in the multiplication efficiency at the level of both the nucleus and the hatcheries. High multiplication efficiency could be achieved by use of the high fecundity and the pyramid industry structure in Chinese shrimp. RP and BCR were increased by 1 866.92% and 1 736.75% when the production population was multiplied by 1 736.15%.
- multi-trait integrated breeding program,
- selection response,
- genetic gain,
- profit,
- benefit/cost ratio

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References(30)

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