Table 1 Ingredient composition and nutrient content of control (CON), ptimal (OPT) and Optimal + leucine (OPTLEU) diets (g/kg, as-fed basis)
CON | OPT | OPTLEU | |
|---|---|---|---|
Ingredient composition | |||
Corn, yellow dent | 591.7 | 614.5 | 612.1 |
Soybean meal1 | 300.0 | 140.0 | 140.0 |
Soy hulls | – | 105.7 | 105.7 |
Sugar food product2 | 50.0 | 50.0 | 50.0 |
Beef tallow | 33.5 | 50.2 | 48.1 |
L-Lysine·HCl, 78.8% | – | 4.7 | 4.7 |
L-Valine | – | 2.9 | 2.9 |
L-Threonine | – | 2.0 | 2.0 |
L-Phenylalanine | – | 1.3 | 1.3 |
DL-Methionine | – | 1.1 | 1.1 |
L-Isoleucine | – | 0.8 | 0.8 |
L-Histidine | – | 0.7 | 0.7 |
L-Tryptophan | – | 0.5 | 0.5 |
L-Leucine | – | – | 4.5 |
Limestone | 11.8 | 9.3 | 9.3 |
Dicalcium phosphate | 4.5 | 7.8 | 7.8 |
Sodium chloride | 5.0 | 5.0 | 5.0 |
Vitamin and mineral Premix3 | 2.5 | 2.5 | 2.5 |
Titanium dioxide | 1.0 | 1.0 | 1.0 |
Calculated nutrient4 | |||
Net energy, MJ/kg | 10.8 | 10.8 | 10.8 |
Crude protein | 192.4 | 140.0 | 143.4 |
Fermentable fiber | 115.8 | 115.8 | 115.7 |
SID5 amino acids | |||
Arginine | 11.7 | 7.1 | 7.1 |
Histidine | 4.7 | 3.7 | 3.7 |
Isoleucine | 7.1 | 5.2 | 5.2 |
Leucine | 14.7 | 10.3 | 14.7 |
Lysine | 9.0 | 9.0 | 9.0 |
Methionine6 | 2.7 | 3.0 | 3.0 |
Methionine + cysteine | 5.4 | 4.9 | 4.9 |
Phenylalanine | 8.4 | 6.7 | 6.7 |
Phenylalanine + tyrosine | 13.8 | 10.3 | 10.3 |
Threonine | 6.1 | 5.8 | 5.8 |
Tryptophan | 2.1 | 1.7 | 1.7 |
Valine | 7.7 | 7.9 | 7.9 |
Nitrogen | 26.3 | 18.8 | 19.3 |
Total calcium7 | 6.5 | 6.5 | 6.5 |
STTD8 phosphorus7 | 2.3 | 2.3 | 2.3 |