Table 2. Growth performance and carcass traits of growing-finishing pigs fed diets based on soybean meal (SBM) or rapeseed meal (RSM).
Diet | SEM | p-value; effect of diet | ||
---|---|---|---|---|
SBM | RSM | |||
Number of pigs | 42 | 42 | ||
Live weight, kg | ||||
Initial | 29.2 | 28.8 | 0.19 | 0.139 |
End of growing period | 64.4 | 62.2 | 0.46 | 0.002 |
At slaughter | 112.2 | 107.5 | 0.66 | 0.001 |
Days in experiment | 88.1 | 88.1 | 0.45 | 0.777 |
Growing period | ||||
ADG1, g | 837.6 | 795.2 | 9.16 | 0.002 |
ADFI2, g | 1707.0 | 1678.0 | 13.00 | 0.119 |
FCR3, g feed/g gain | 2.0 | 2.1 | 0.02 | 0.007 |
NE:gain, MJ/kg gain | 19.0 | 19.5 | 0.17 | 0.017 |
Finishing period | ||||
ADG, g | 1039.4 | 986.9 | 11.04 | 0.002 |
ADFI, g | 2557.0 | 2470.0 | 17.70 | 0.002 |
FCR, g feed/g gain | 2.5 | 2.5 | 0.02 | 0.223 |
NE:gain, MJ/kg gain | 22.9 | 23.2 | 0.21 | 0.390 |
Overall period | ||||
ADG, g | 942.9 | 895.0 | 7.69 | 0.001 |
ADFI, g | 2151.0 | 2088.0 | 13.40 | 0.004 |
FCR, g feed/g gain | 2.29 | 2.34 | 0.01 | 0.012 |
NE:gain, MJ/kg gain | 21.2 | 21.6 | 0.12 | 0.047 |
Carcass traits4 | ||||
Carcass weight, kg | 78.7 | 73.8 | 0.51 | 0.001 |
Dressing percentage | 70.1 | 68.7 | 0.26 | 0.001 |
Carcass lean percentage | 61.9 | 62.1 | 0.25 | 0.845 |
Kg feed: kg carcass | 2.4 | 2.5 | 0.01 | 0.001 |
1Average daily gain
2Average daily feed intake
3Feed conversion ratio
4 SBM diet: N = 41 and RSM diet: N = 42