Tag Wilson Wasielesky

Pacific white shrimp reared with green and red lights grew much larger but showed little differences for survival, feed conversion or productivity. 

Un estudio determinó el rendimiento zootécnico del camarón blanco del Pacífico bajo diferentes regímenes de luz. Los camarones expuestos a la luz tienen mejores parámetros zootécnicos que aquellos con exposición reducida o nula. 

The stable isotopes technique with δ13C and δ15N can be used to determine the relevance of different food sources to shrimp feeding during the pre-nursery phase of Litopenaeus vannamei culture. During this trial, different types of commercial feed, microalgae, Artemia sp. nauplii and bioflocs were used as food sources. 

The authors performed a study to determine the tolerance of shrimp postlarvae to the crowding effects of high-density stocking in terms of production performance. Postlarvae were stocked in heavily aerated microcosm tanks with biofloc at 1,500; 3,000; 6,000 or 9,000 shrimp/m3. High survival was observed at all densities. Final biomass values increased with higher stocking densities, but there was no significant difference between the 6,000 and 9,000 shrimp/m3 treatments or the 1,500 and 3,000 shrimp/m3 treatments. 

In a study, “pre-fertilization” in the nursery phase of a biofloc system for shrimp was tested. The objective was to accelerate the biofloc formation to minimize ammonia concentrations, avoiding high peaks during culture. 

The use of biofloc systems for shrimp culture requires monitoring of water quality parameters, particularly suspended solids levels.