Table 2.
NRC-recommended minimal content of arginine in diets for pigs and Wu-recommended optimal content of arginine in diets for pigs (values are % of total diet, unless indicated otherwise)
| Nursery piglets (5 kg BW) |
Weanling piglets (10 kg BW) |
Growing-finishing pigs (20 to 100 kg BW) |
Gestating pigs (140 kg BW at breeding) |
Lactating sows | |
|---|---|---|---|---|---|
| NRC (2012) 1 | 0.75 | 0.68 | 0.62 (20 kg BW)0.38 (100 kg BW) |
0.36 (days 0 to 90) 0.47 (days 90 to 114) |
0.60 (parity 1)2 0.54 (parity 2)2 |
| NRC (1998) 3 | 0.59 | 0.54 | 0.37 (20 kg BW) 0.19 (100 kg BW) |
0.0 | 0.0 |
| Wu (2014) 4 | 1.19 | 1.01 | 0.83 (20 kg BW) 0.64 (100 kg BW) |
1.03 (days 0 to 90) 1.03 (days 90 to 114) |
1.37 |
1Nutrient Requirements of Swine, NRC (2012), minimal content of Arg in diets.
2Standardized ileal digestible value.
3Nutrient Requirements of Swine, NRC (1998), minimal content of Arg in diets.
4Wu-recommended optimal content of true digestible Arg in swine diets. Feed intake for gestating swine is 2 kg/d (days 0 to 90) and 2.3 kg/d (days 90 to 114).