Table 1.

Ingredients and chemical compositions of the diets.

	Treatments 1
Ingredients (g/kg unless Otherwise Stated)	Basal	Zinc Oxide	Mushroom	Vit D2 Mushroom
Ground wheat	355.4	352.3	353.4	353.4
Full-fat soya bean	170	170	170	170
Soya bean meal (48% CP)	105	105	105	105
Whey powder (900 g CP/kg)	50	50	50	50
Mushroom Powder	0	0	2	2
Zinc oxide	0	3.1	0	0
Soya oil	30	30	30	30
Soybean concentrate	65	65	65	65
Flaked wheat	130	130	130	130
Flaked maize	70	70	70	70
L-Lysine-HCl	4	4	4	4
DI-Methionine	2	2	2	2
L-Threonine	1.8	1.8	1.8	1.8
L-Tryptophan	0.3	0.3	0.3	0.3
Sodium bicarbonate	2	2	2	2
Monocalcium phosphate	4	4	4	4
Vitamin and mineral premix 2	2.5	2.5	2.5	2.5
Calcium carbonate (limestone)	6	6	6	6
Salt	2	2	2	2
Analysed chemical analysis
Gross energy (MJ/kg)	16.9	16.9	16.8	16.9
Dry matter	899	899.5	897.5	898.1
Crude protein	208	208.3	208.5	208.5
Lysine (%) 3	1.4	1.4	1.4	1.4
Threonine (%) 3	0.9	0.9	0.9	0.9
Methionine and cysteine (%) 3	0.8	0.8	0.8	0.8
Tryptophan (%) 3	0.3	0.3	0.3	0.3
Standardised ileal digestible lysine 3	13.0	13.0	13.0	13.0
Crude fat	79.9	80.3	80.1	80
Crude fibre	28	28	28.2	28.3
Neutral detergent fibre	99	98.7	99.5	99.3
Ash	46.2	46.1	46	46.2
Vitamin D3 (µg/kg) 3	50	50	50	50
Additional vitamin D2 (µg/kg)	0	0	0	99
Β-glucan (mg/kg)	0	0	198	205

¹ Treatments: (1) basal diet; (2) basal diet + ZnO (3100 mg/kg d 1–14, 1550 mg/kg d 15–35 and withdrawn entirely d 36–45); (3) basal diet + mushroom powder (2 g/kg feed) containing 200 mg/kg β-glucan; (4) basal diet + Vitamin D₂-enriched mushroom powder (2 g/kg feed) containing 200 mg/kg β-glucan with 100 ug/kg additional vitamin D2. ² Provided (per kg diet): 1.8 mg retinol; 0.025 mg cholecalciferol; 67 mg tocopherol; 4 mg menaquinone; 0.1 mg cyanocobalamin; 2 mg riboflavin; 12 mg nicotinic acid; 10 mg pantothenic acid; 250 mg choline chloride; 2 mg thiamine; 0.015 mg pyridoxine; 25 mg copper; 140 mg iron; 47 mg Manganese; 120 mg Zinc; 0.6mg iodine; 0.3 mg sulphur. ³ Calculated for the tabulated nutritional composition [25].