TABLE 1.

Ingredients and nutrient composition of the basal diet (%, unless stated otherwise)

Ingredients	Treatment 1 (control group)	Treatment 2	Treatment 3	Treatment 4
Corn	67.6	67.6	67.6	67.6
Soybean meal (44% CP)	21	21	21	21
Wheat bran	0.15	0.15	0.15	0.15
Soybean oil	0.07	0.07	0.07	0.07
Lime stone	3	3	3	3
Oyster shells	5.47	5.47	5.47	5.47
Dicalcium phosphate	1.64	1.64	1.64	1.64
NaHCO3	0.18	0.18	0.18	0.18
Common salt	0.19	0.19	0.19	0.19
Min. premix a	0.25	0.25	0.25	0.25
Vit. premix b	0.25	0.25	0.25	0.25
DL‐methionine	0.15	0.15	0.15	0.15
Lavender essential oil	0	0.025	0	0.025
Mint essential oil	0	0	0.025	0.025
Nutrient composition (as fed basis)
2,750	ME (Kcal/kg)
14.7	Crude protein
3.64	Calcium
0.37	Available phosphorus
0.15	Sodium
2.32	Crude fiber
207	(Na + K)‐Cl (meg/kg)
0.71	Lysine
0.37	Methionine
0.63	Methionine + cystine
0.54	Threonine
0.16	Tryptophan

^aVitamin mixture per 2.5 kg of diet provides the following: vitamin A, 7,700,000 IU; vitamin D₃, 3,300,000 IU; vitamin E, 6,600 mg; vitamin K₃, 550 mg; thiamine, 2,200 mg; riboflavin, 4,400 mg; vitamin B6, 4,400 mg; capantothenate, 550 mg; nicotinic acid, 200 mg; folic acid, 110 mg; choline chloride, 275,000 mg; biotin, 55 mg; vitamin B₁₂, 8. 8 mg.

^bMineral mixture per 2.5 kg of diet provides the following: Mn, 66,000 mg; Zn, 66,000 mg; Fe, 33,000 mg; Cu, 8,800 mg; Se, 300 mg; I, 900 mg.