Growth, Nutrient Retention, Waste Output, and Antioxidant Capacity of Juvenile Triangular Bream (Megalobrama terminalis) in Response to Dietary Selenium Yeast Concentration

Table 1

Formulation (g/kg), proximate composition (g/kg), contents of energy (MJ/kg), and selenium (mg/kg) in the test diets.

Ingredients	Se0	Se1	Se3	Se9	Se12
Steam dried red fishmeal	70	70	70	70	70
Soybean meal	240	240	240	240	240
Rapeseed meal	90	90	90	90	90
Cottonseed meal	70	70	70	70	70
Poultry by-product meal	50	50	50	50	50
Rice bran	160	160	160	160	160
Wheat flour	200	200	200	200	200
Zeolite powder	20	20	20	20	20
Calcium hydrophosphate	20	20	20	20	20
Vitamin premix	7	7	7	7	7
Se free mineral premix	3	3	3	3	3
Brewer’s dried yeast	30	29	27	21	18
Selenium yeast	0	1	3	9	12
Fish oil	40	40	40	40	40
Total	1000	1000	1000	1000	1000
Proximate analyses
Crude protein	324	324	324	324	324
Crude fat	67	67	67	67	67
Crude ash	73	73	73	73	73
Gross energy	17.3	17.3	17.3	17.2	17.1
Selenium content	1.46	4.10	8.24	22.87	29.96

Vitamin and mineral premix (per kg diet): thiamin, 20 mg; riboflavin, 20 mg; pyridoxine, 20 mg; cyanocobalamine, 2 mg; retinyl palmitate, 1.38 mg; calciferol, 0.5 mg; phylloquinone, 10 mg; folic acid, 5 mg; d-calcium pantothenate, 50 mg; phaseomannite, 100 mg; all-rac-α-tocopheryl acetate, 10 mg; mineral premix provides per kg of feed: NaCl, 0.8 mg; MgSO₄·7H₂O, 12 mg; NaH₂ PO₄·7H₂O, 20 mg; KH₂PO₄, 25.6 mg; Ca(H₂PO₄)₂·H₂O, 16 mg; FeSO₄, 2 mg; Ca(CH₂CHCOO)₂·5H₂O, 2.8 mg; ZnSO₄·7H2O, 0.028 mg; MnSO₄·4H₂O, 0.013 mg; CuSO₄·5H₂O, 0.0025 mg; CoC_l2·6H₂O, 0.0008 mg; KIO₃·6H₂O, 0.0024 mg.