Open AccessEffect of feeding frequency on the white shrimp Litopenaeus vannamei during the pilot‐scale nursery phase of a superintensive culture in a biofloc system
Author(s) -
Wasielesky Wilson,
Bezerra Aline,
Poersch Luis,
Hoffling Flávia Banderó,
Krummenauer Dariano
Publication year - 2020
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/jwas.12694
Subject(s) - litopenaeus , shrimp , biology , zoology , feed conversion ratio , fishery , biomass (ecology) , aquaculture , water quality , ecology , body weight , fish <actinopterygii> , endocrinology
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 m 2 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.