Soya saponin improves egg-laying performance and immune function of laying hens

Table 1 Test diet composition and nutrition level of air-dry basis

Ingredients	Contents, %	Nutritional parameters^c	Levels
Corn, 7.8% pro	67.55	ME, MC/kg	2.701
Dephenolized cottonseed protein, 50%	14.00	Crude protein, %	16.530
Limestone powder	8.154	Calcium, %	3.630
Corn gluten meal, 51.3%	5.00	Total phosphorus, %	0.764
Soybean meal, 48%	2.00	Available phosphorus, %	0.434
Ca (HCO₃)₂	1.86	Methionine + Cystine, %	0.681
NaCl	0.35	Lysine, %	0.791
Trace minerals^b	0.30	Methionine, %	0.408
L-Lysine HCl, 78%	0.25	Threonine, %	0.576
DL-Methionine	0.12	Tryptophan, %	0.164
Choline chloride, 50%	0.12	Digestible Lysine, %	0.725
Tryptophan	0.02	Digestible Methionine, %	0.386
Multi-vitamins^a	0.03	Digestible Threonine, %	0.505
Sandaquin	0.03	Digestible Tryptophan, %	0.148
Phytase	0.016
Zeolite powder	0.2
Total	100

The diet was formulated with reference to NY /T33–2004. The content of SS in our SS additives was 45.1%, and the actual measured values of SS in each group of diets are as follows. The content of SS in the diet of the control group was 9.5 mg/kg. The contents of SS in the 50 SS and 500 SS groups were 31.3 and 275.7 mg/kg, respectively. ^aVitamin premix (provided per kilogram of feed) the following substances: vitamin A, 12,500 IU; vitamin D₃, 2500 IU; vitamin K₃, 2.65 mg; vitamin B₁, 2 mg; vitamin B₂, 6 mg; vitamin B₁₂, 0.025 mg; vitamin E, 30 IU; biotin, 0.0325 mg; folic acid, 1.25 mg; pantothenic acid, 12 mg; niacin, 50 mg. ^bTrace element premix (provided per kilogram of feed) the following substances: copper, 8 mg; zinc, 75 mg; iron, 80 mg; manganese, 100 mg; selenium, 0.15 mg; iodine, 0.35 mg. ^cCalculated value based on the analysis of experimental diets

ISSN: 2049-1891