Table 2.

Composition of the experimental diets.

Feed ingredient (g/kg)	Diet 1	Diet 2	Diet 3	Diet 4	Diet 5	Diet 6	Diet 7
Maize ground	543	594	654	714	716	464	804
Maize whole	0	0	0	0	0	250	0
Soybean meal	355	309	253	195	192	195	0
Whey protein concentrate	0	0	0	0	0	0	124
Soy oil	47.2	38.0	26.8	14.9	14.1	14.9	0
l- lysine HCl	0.869	2.238	3.895	5.629	5.731	5.629	2.215
d,l-methionine	1.842	2.043	2.288	2.545	4.301	2.545	1.700
l- cysteine	0.902	1.090	1.309	1.560	1.369	1.560	0.544
l- threonine	0.931	1.552	2.305	3.094	3.142	3.094	0.941
l- tryptophan	0	0	0.138	0.442	0.460	0.442	0.010
l- valine	0.144	0.919	1.859	2.845	2.905	2.845	1.630
l- arginine	0	0.196	1.793	3.465	3.563	3.465	6.858
l- isoleucine	0	0.384	1.344	2.330	2.390	2.330	0.991
l- leucine	0	0	0	0.590	0.653	0.590	0
l- histidine	0	0	0	0.259	0.293	0.259	0.655
Sodium chloride	2.37	1.93	1.35	0.70	0.67	0.70	1.82
Sodium bicarbonate	2.24	2.91	3.78	4.76	4.81	4.76	3.33
Limestone	5.63	5.61	5.57	5.54	5.54	5.54	5.35
Dicalcium phosphate	21.72	22.32	23.06	23.83	23.88	23.83	26.88
Choline chloride	0.80	0.80	0.99	1.35	1.38	1.35	1.88
Vitamin-mineral premix	2.00	2.00	2.00	2.00	2.00	2.00	2.00
Celite	15.0	15.0	15.0	15.0	15.0	15.0	15.0

¹The vitamin–mineral premix supplied per tonne of feed: [MIU] retinol 12, cholecalciferol 5, [g] tocopherol 50, menadione 3, thiamine 3, riboflavin 9, pyridoxine 5, cobalamin 0.025, niacin 50, pantothenate 18, folate 2, biotin 0.2, copper 20, iron 40, manganese 110, cobalt 0.25, iodine 1, molybdenum 2, zinc 90, and selenium 0.3.