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 : 2025-05-15 Epub 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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斑点斑斑巴比伦鱼饲料效率的遗传评价

斑巴比伦鱼（Babylonia areolata）是中国新兴的水产养殖品种。饲料费用占斑巴比伦养殖总费用的40 - 60%，因此饲料效率是该品种遗传改良的最重要性状之一。本研究对22科528只斑点巴比伦鱼进行了为期56天的生长和饲料效率评价，试验分为两个阶段：初始1-28天和29-56天。饲料效率（FER）和剩余采食量（RFI）在两个时期均表现出遗传相关性，遗传力分别为0.20±0.077和0.14±0.064，分别为中遗传力和低遗传力。RFI与日采食量（DFI）具有较高的遗传和表型相关性，FER与特定生长率（SGR）和DFI具有较高的遗传和表型相关性。采用群饲方式对11个科进行了对比试验。结果表明，两种模式在饲料效率、生长性状和摄食性状上均无显著差异。本研究建立了单个体饲养模式下斑点巴比伦饲料效率的评价方法，发现斑点巴比伦饲料效率具有良好的养殖潜力。

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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.