ABSTRACT The objective of this study was to evaluate the effect of different stocking densities and the presence/absence of two artificial substrates on water quality and production rates of marine shrimp in a biofloc shrimp nursery culture. Two experiments were performed: different stocking densities with mosquito netting substrate and the presence/absence of polyester-type substrate. The first experiment lasted 38 days, and shrimp at an initial weight of 0.013±0.010 g were stocked in 24 tanks. The second experiment lasted 35 days, […]

The objective of this study was to evaluate the effects of stocking density and strain on performance, carcass yield and cuts and quality parameters of breast meat (cooking weight loss, shearing force and pH) of broilers chickens. Two thousand and nine hundred and twenty five day-old chicks were alocated in a randomized 3x3x2 factorial design, with tree commercial strains (Ross 308, Cobb 500 and Hybro PG), three densities (10, 13 and 16 birds/m2) and two sex with two replications with […]

The effect of stocking density on the larviculture of Pimelodus maculatus post-larvae was evaluated. The experiment was conducted at the Sao Carlos hatchery (EPISCar), SC. Post-larvae were daily fed zooplankton at the rate of 300 organisms/post-larvae/day at the following densities: T1. 5 post-larvae/L; T2. 15 post-larvae/L; and T3. 30 post-larvae/L. Survival rates were evaluated on the third and fifth day of the experiment. After three days, density did not affect survival rates; however, on the fifth day survival rate was […]