Table 4.
Economic analysis of nursery pigs fed diets with supplementation of soy protein concentrate (SPC) replacing animal protein supplements
| Item | SPC replacement, %1 | SEM | P value | |||||
|---|---|---|---|---|---|---|---|---|
| 0 | 33 | 66 | 100 | Linear | Quad. | SPC 0% vs. others | ||
| Feed cost/ pig, $2 | 11.99 | 10.73 | 9.50 | 7.71 | 0.74 | <0.001 | 0.645 | <0.001 |
| Feed cost/ kg gain, $3 | 0.80 | 0.74 | 0.74 | 0.72 | 0.02 | 0.009 | 0.402 | 0.008 |
Dietary treatments were supplemented with soy protein concentrate (X-Soy 200, CJ Selecta, MG, Brazil) at four levels replacing animal protein supplements including fish meal, poultry meal, and blood plasma (N = 32 total, n = 8 for each replacement level).
Feed cost/pig = (phase 1 cost + phase 2 cost + phase 3 cost)/pig.
Feed cost/kg gain = (feed cost/pig)/(weight gain/ pig).