Table 1 Ingredient composition and nutrient levels of the experimental diets (as-fed basis, %)
Items | Protein levelsa | ||
|---|---|---|---|
AP (16 % CP) | MP (13 % CP) | LP (10 % CP) | |
Ingredient composition, % | |||
 Corn | 67.00 | 78.36 | 87.40 |
 Soybean meal | 23.76 | 15.00 | 5.50 |
 Wheat bran | 6.00 | 3.00 | 2.00 |
 Soybean oil | 0.88 | 0.90 | 1.71 |
 Lys | 0.01 | 0.27 | 0.55 |
 Met | 0.00 | 0.00 | 0.09 |
 Thr | 0.00 | 0.06 | 0.19 |
 Trp | 0.00 | 0.01 | 0.06 |
 CaHPO4 | 0.50 | 0.55 | 0.65 |
 Limestone | 0.55 | 0.55 | 0.55 |
 NaCl | 0.30 | 0.30 | 0.30 |
 1%Premixb | 1.00 | 1.00 | 1.00 |
 Total | 100.00 | 100.00 | 100.00 |
Nutrient levels, % | |||
 DE(MJ/kg)c | 14.20 | 14.20 | 14.20 |
 CP | 16.30 | 13.17 | 10.26 |
 Lys | 0.72 | 0.72 | 0.73 |
 Met + Cys | 0.50 | 0.42 | 0.43 |
 Thr | 0.56 | 0.50 | 0.49 |
 Trp | 0.17 | 0.13 | 0.13 |
 Arg | 0.94 | 0.70 | 0.44 |
 His | 0.39 | 0.31 | 0.22 |
 Ile | 0.60 | 0.45 | 0.30 |
 Leu | 1.32 | 1.13 | 0.91 |
 Phe | 0.71 | 0.57 | 0.41 |
 Val | 0.61 | 0.50 | 0.36 |
 Total calcium | 0.52 | 0.50 | 0.51 |
 Total phosphorus | 0.45 | 0.40 | 0.38 |
 Essential AA | 6.29 | 5.24 | 4.23 |
 Non-essential AA | 8.76 | 7.10 | 5.36 |
 Essential/Non-essential AA | 0.70 | 0.74 | 0.78 |