Use of hempseed meal, poultry by-product meal, and canola meal in practical diets without fish meal for sunshine bass ( Morone chrysops× M. saxatilis)

In an effort to reduce fish meal (FM) use in diets for sunshine bass, a feeding trial was conducted. Four practical floating diets were formulated to contain 40% protein, similar energy levels, and without FM. A fifth diet was formulated to contain 30% FM and served as the control diet. Ten fish were stocked into each of 20 110-l aquaria and were fed twice daily (0730 and 1600 h) amounts of diet similar to that of the aquarium consuming the most diet at that feeding. Diets were formulated to contain as major protein sources: Diet 1, 35% soybean meal (SBM) and 35% meat-and-bone meal (MBM); Diet 2, 27% SBM+27% MBM+20% hempseed meal (HSM); Diet 3, 30% SBM and 30% poultry by-product meal (PBM); Diet 4, 27% SBM+27% MBM+20% canola meal (CM). The control diet (Diet 5) had 30% SBM and 30% FM. At the conclusion of the feeding trial, percentage weight gain of sunshine bass fed Diet 1 was significantly ( P