Genetic assessment of feed efficiency in the spotted Babylon Babylonia areolata

IF 3.9 1区农林科学 Q1 FISHERIES

Aquaculture Pub Date : 2025-02-11 DOI:10.1016/j.aquaculture.2025.742284

Linwei Nie , Yijie Kong , Ziyi Ma , Jingqiang Fu , Shengtai Liu , Xuan Luo , Weiwei You , Caihuan Ke

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Abstract

The spotted Babylon (Babylonia areolata) is an emerging aquaculture species in China. Feed accounts for 40–60 % of the total expense of spotted Babylon rearing, making feed efficiency one of the most important traits for genetic improvement in this species. This study evaluated the growth and feed efficiency of 528 spotted Babylons from 22 families for 56 days, comprising two periods: the initial 1–28 days and days 29–56. The feed efficiency ratio (FER) and residual feed intake (RFI) displayed genetic correlations in both periods, with heritability values of 0.20 ± 0.077 and 0.14 ± 0.064, respectively, indicating medium and low heritability, respectively. The RFI had a high genetic and phenotypic correlation with the daily feed intake (DFI), and the FER had a high genetic and phenotypic correlation with the specific growth rate (SGR) and a high genetic correlation with the DFI. A comparative experiment was conducted on 11 families under the group feeding mode. The results showed that there were no significant differences in feed efficiency, growth traits, or feeding traits between the two modes. The study established an evaluation method for determining the feed efficiency of the spotted Babylon using a single individual rearing mode and found that spotted Babylon feed efficiency exhibited good breeding potential.

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来源期刊

Aquaculture 农林科学-海洋与淡水生物学

CiteScore

8.60

自引率

17.80%

发文量

1246

审稿时长

56 days

期刊介绍： Aquaculture is an international journal for the exploration, improvement and management of all freshwater and marine food resources. It publishes novel and innovative research of world-wide interest on farming of aquatic organisms, which includes finfish, mollusks, crustaceans and aquatic plants for human consumption. Research on ornamentals is not a focus of the Journal. Aquaculture only publishes papers with a clear relevance to improving aquaculture practices or a potential application.