Effect of dietary defatted diatom biomass on egg production and quality of laying hens

Table 2 Compositions and nutrient concentrations of experimental diets

Ingredient,% as fed	Control	7.5% Algae	7.5% Algae	15% Algae
Ingredient,% as fed	Control	-SBM	-SBM/Corn	-SBM/Corn
Corn (yellow)	65.65	65.28	59.45	52.55
Vegetable oils	0.55	1.55	2.30	4.30
Soybean meal	22.50	15.00	20.50	18.50
(48.5% crude protein)	22.50	15.00	20.50	18.50
Dicalcium phosphate	1.50	1.40	1.35	1.20
Limestone	8.80	8.40	8.40	7.95
Salt	0.50	0.00	0.00	0.00
Vitamin mix¹	0.25	0.25	0.25	0.25
Mineral mix²	0.15	0.15	0.15	0.15
DL-methionine	0.10	0.10	0.10	0.10
Defatted algae	0.00	7.50	7.50	15.00
Amino acids premix³	0.00	0.37	0.00	0.00
Total	100.00	100.00	100.00	100.00
Nutritional composition (% except for ME)
ME, Kcal/g	2.80	2.80	2.80	2.80
Protein	16.49	14.26	16.43	16.30
Fat	3.27	4.73	5.31	7.58
Fiber	2.32	3.12	3.21	4.08
Ca	3.75	3.76	3.76	3.76
P	0.60	0.59	0.60	0.60
Avail. P	0.38	0.40	0.40	0.42
Arg	1.03	0.86	1.03	1.02
Lys	0.84	0.84	0.85	0.85
Met	0.36	0.36	0.38	0.39
Cys	0.28	0.23	0.26	0.23
Gly	0.68	0.61	0.70	0.73
Ser	0.80	0.68	0.80	0.79
His	0.44	0.36	0.42	0.40
Ile	0.67	0.67	0.68	0.69
Leu	1.50	1.33	1.48	1.46
Phe	0.78	0.67	0.78	0.78
Tyr	0.64	0.55	0.64	0.64
Thr	0.61	0.61	0.63	0.65
Trp	0.21	0.21	0.21	0.22
Val	0.76	0.68	0.78	0.79

¹Provided (in IU/kg of diet): vitamin A, 6,500; vitamin D₃, 3,500; vitamin E, 25 and (in mg/kg of diet): riboflavin, 25; d-calcium pantothenate, 25; nicotinic acid, 150; cyanocobalamin, 0.011; choline chloride, 1,250; biotin, 1.0; folic acid, 2.5; thiamine hydrochloride, 7.0; pyridoxine hydrochloride, 25.0; menadione sodium bisulfite, 5.0; and ethoxyquin, 66.
²Provided (in mg//kg of diet): CuSO₄^.5H₂O, 31.42; KI, 0.046; FeSO₄^.7H₂O, 224.0; MnSO₄^.H₂O, 61.54; Na₂SeO₃, 0.13; ZnO, 43.56; Na₂MoO₄^.2H₂O, 1.26.
³Provided 1.4 g Lys, 0.1 g Met, 0.9 g Ile, 0.6 g Thr, 0.3 g Trp per kilogram of diet.

ISSN: 2049-1891