Abstract Shrimp farming is supported by fast-growth and high-resistance genotypes. Protein requirement is important for shrimp perfomance. Fishmeal is the main source, but their limited production increase feed formulation costs for aquaculture. This study evaluated the effect of genotype and protein source on performance of two shrimp genotypes. Shrimps with fast-growth (FG) and high-resistance (HR) were randomly assigned to two dietary treatments (animal and vegetal protein) in a 2 × 2 factorial design. A 36-day bioassay was realised in clear-water hyper-intensive system to compare FG and HR performance using three replicate tanks for each genotype and dietary treatment. Each tank was seeded with 10 shrimp with average initial weight of 2.03 ± 0.10 g for FG genotype and 2.07 ± 0.02 g for HR genotype, at a density of 250 shrimp/m3. A weekly biometry was realised to monitor the shrimp performance. We observed a significant interaction (p < .05) between genotype and diet for shrimp growth performance. Compared with HR shrimp, FG shrimp showed higher growth and better feed efficiency. The maximum weight gain was recorded, FG shrimp was significantly higher than HR shrimp independently of protein source. Diet with different protein source significantly influence the performance of FG shrimp, while in HR shrimp there is no significant difference between dietary treatment. The comparison showed that genotype, diet and their interactions influenced the performance of Litopenaeus vannamei. This research may be useful for improving genetic selection programmes, reducing feed costs for shrimp industry and design-feeding strategies for shrimp genotypes. Highlights Litopenaeus vannamei genotypes respond differently to diet. Fishmeal reduction on diet is posible in shrimps with high resistance. Genotype and diet interaction influence shrimp performance.

中文翻译：

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基因型和蛋白质来源对南美白对虾（Litopenaeus vannamei）生产性能的影响

摘要 对虾养殖受到快速生长和高抗性基因型的支持。蛋白质需求对虾的性能很重要。鱼粉是主要来源，但其有限的产量增加了水产养殖的饲料配方成本。本研究评估了基因型和蛋白质来源对两种虾基因型性能的影响。具有快速生长 (FG) 和高抗性 (HR) 的虾在 2 × 2 因子设计中被随机分配到两种日粮处理（动物和植物蛋白）。在清水超密集系统中实现了 36 天的生物测定，以针对每种基因型和饮食处理使用三个重复池来比较 FG 和 HR 性能。每个水槽接种 10 只虾，FG 基因型的平均初始重量为 2.03 ± 0.10 g，HR 基因型的平均初始重量为 2.07 ± 0.02 g，密度为 250 只虾/m3。实现了每周一次的生物测量来监测虾的表现。我们观察到对虾生长性能的基因型和饮食之间存在显着的相互作用（p < .05）。与HR虾相比，FG虾表现出更高的生长和更好的饲料效率。记录了最大增重，FG 虾显着高于 HR 虾，与蛋白质来源无关。不同蛋白质来源的日粮对FG虾的生产性能有显着影响，而在HR虾中，日粮处理之间没有显着差异。比较表明，基因型、饮食及其相互作用影响了凡纳滨对虾的生产性能。这项研究可能有助于改进遗传选择计划、降低对虾产业的饲料成本和设计对虾基因型的饲养策略。亮点 南美白对虾基因型对饮食的反应不同。在高抵抗力的虾中，日粮减少鱼粉是可能的。基因型和饮食相互作用影响虾的生产性能。