Tag Alberto J. P. Nunes

Results of this study showed that L. vannamei juveniles can be cultured at high densities with adequate survival, growth and feeding efficiency, and with minimal water exchange or full water reuse through recirculation. 

Este estudio evaluó el efecto de alimentar juveniles de L. vannamei varias veces al día versus dos y cuatro veces con una dieta baja en harina de pescado suplementada con aminoácidos cristalinos. 

This study evaluated the effect of feeding juvenile L. vannamei several times a day versus two and four times – manually or with an automatic feeder – with a low-fishmeal diet supplemented with crystalline amino acids. 

Authors present a practical review of modern formulation options including crystalline amino acids in fulfilling nutritional requirements in aquafeeds. 

Este estudio evaluó cinco dietas formuladas con niveles crecientes de metionina (Met) y Met + cisteína (Cys) y sus efectos sobre el crecimiento de juveniles de camarones blancos del Pacífico sembrados a 50, 75 o 100 animales/m2 en un sistema de agua verde. 

This study tested five diets formulated with increasing levels of methionine (Met) and Met + cysteine (Cys) and their effect on growth performance of juvenile Pacific white shrimp stocked at 50, 75 or 100 animals/m2 in a green water system. 

Feed plants deal with varied raw materials, formulations and feeds for different animals, which can lead to quality issues and nutrient variations. Near-infrared spectroscopy (NIRS) has been successfully applied in Brazil to ensure feed quality standards at the farm level. 

A deficiency of cholesterol in shrimp diets can result in slower growth and higher mortality rates. A study by the authors investigated krill meal as a partial replacement for a cholesterol supplement in diets for juvenile Litopenaeus vannamei shrimp. 

Authors evaluated how limiting dietary essential amino acids and long-chain polyunsaturated fatty acids would affect the growth performance of white shrimp raised in a zero-water-exchange biofloc system. The shrimp were fed diets with varied levels of fishmeal and fish oil and supplemented with soy products. 

Shrimp survival, weight, yield and feed conversion were better in farm units that operated with settling chambers for solids removal than in units without. 

The authors conducted a study to determine how replacement of salmon meal with various animal protein meals in feed affected the growth performance of white shrimp. 

In a 10-week study of nursery-reared Pacific white shrimp performance, the inclusion of Spirulina meal allowed reduction of fishmeal up to 25 percent with no detrimental effect on shrimp growth performance. 

A study evaluated Pacific white shrimp given plant protein-based diets with varied lipid content and soybean meal:soy protein concentrate ratios. 

Intensive nursery systems are an extension of hatcheries to acclimate postlarvae to farm conditions and assess quality and health prior to pond stocking. 

Much of Brazil’s expanding tilapia aquaculture takes place in floating cages with sturdy frames and nets made from plastic-coated steel or polypropylene.