Table 1.

Diet composition for phase 1 (days 0–14)

	Dietary treatment
Ingredients, %	Positive control	Novel Thr source	Negative control
Corn	47.13	47.06	47.33
Soybean meal	26.09	26.09	26.09
Zinc oxidea	0.38	0.38	0.38
Monocalcium phosphate	0.90	0.90	0.90
Calcium carbonate	0.91	0.91	0.91
Salt	0.35	0.35	0.35
Fishmeal	2.00	2.00	2.00
L-Lys	0.50	0.50	0.50
L-tryptophan	0.04	0.04	0.04
Soybean oil	2.50	2.50	2.50
Copper sulfate	0.08	0.08	0.08
Whey permeate	7.91	7.91	7.91
Dried whey	2.50	2.50	2.50
Oat groats	5.00	5.00	5.00
VTM premixb	0.50	0.50	0.50
Blood plasma	2.50	2.50	2.50
L-isoleucine	0.08	0.08	0.08
DL-methionine	0.28	0.28	0.28
Thr sourcec	0.20	0.27	–
L-valine	0.15	0.15	0.15
Total	100.00	100.00	100.00
Calculated composition
Metabolizable energy, Mcal/kg	3.126	3.126	3.126
Crude protein, %	21.10	21.10	21.10
Fat, %	5.00	5.00	5.00
Calcium, %	0.76	0.76	0.76
Available phosphorus, %	0.40	0.40	0.40
Sodium, %	0.32	0.32	0.32
Lactose, %	8.00	8.00	8.00
SID Lys, %	1.42	1.42	1.42
SID Ile:Lys	0.55	0.55	0.55
SID Leu:Lys	0.87	0.87	0.87
SID M+C:Lys	0.58	0.58	0.58
SID Thr:Lys	0.60	0.60	0.46
SID Trp:Lys	0.18	0.18	0.18
SID Val:Lys	0.67	0.67	0.67

Ingredients are listed as percentage of inclusion in the diet and reported on an “as-fed” basis.

^aProvided 3,000 ppm zinc.

^bVitamin and trace mineral; provided 6,614 IU vitamin A, 827 IU vitamin D, 26 IU vitamin E, 2.6 mg vitamin K, 29.8 mg niacin, 16.5 mg pantothenic acid, 5.0 mg riboflavin, 0.023 mg vitamin B12, 165 mg Zn (zinc sulfate), 165 Fe (iron sulfate), 39 mg Mn (manganese sulfate), 17 mg Cu (copper sulfate), 0.3 mg I (calcium iodate), and 0.3 mg Se (sodium selenite) per kilogram of diet.

^cL-Thr in positive control; ThrPro (CJ America Bio, Fort Dodge, IA) in novel Thr source.