Feeding frequencies influence growth and feeding efficiencies and thus knowing the optimal protocol is important to minimize operational costs. The present study evaluated different feeding frequencies during the pilot‐scale nursery phase of a biofloc system: T1 (1 feeding/day), T3 (3 feedings/day), and T6 (6 feedings/day), each with three replicates. In a greenhouse with nine 35 m² tanks, the postlarvae of Litopenaeus vannamei with a mean weight of 0.037 g were stocked at a density of 2,000 shrimp m⁻². Feeding rate was adjusted according to the shrimp biomass. Parameters of water quality, microorganisms, and production performance of shrimp were monitored. The experiment lasted 40 days. Data on the water quality, final weight, survival, and feed conversion ratio (FCR) showed no differences among the T1, T3, and T6 treatments, respectively (p > .05). The results show that it is possible to reduce the feeding frequency during the nursery phase without affecting the water quality and the growth performance of shrimp.

中文翻译：

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在生物絮凝系统超集约培养的中试苗圃阶段，饲喂频率对南美​​白对虾凡纳滨对虾的影响

进料频率会影响生长和进料效率，因此了解最佳操作规程对于最小化运营成本很重要。本研究评估了生物絮凝系统中试阶段苗圃阶段的不同饲喂频率：T1（每天饲喂1次），T3（每天饲喂3次）和T6（每天饲喂6次），每个重复三次。在一个有9个35 m ²罐的温室中，以2,000只虾m ^-2的密度放养平均重量为0.037 g的南美白对虾（Litopenaeus vannamei）的幼体。根据虾的生物量调节饲喂速度。监测虾的水质，微生物和生产性能参数。实验持续了40天。关于水质，最终重量，存活率和饲料转化率（FCR）的数据分别显示T1，T3和T6处理之间无差异（p  > .05）。结果表明，在不影响虾的水质和生长性能的情况下，可以减少苗期的饲喂频率。