pig feed1 feed2 feed3 feed4
1 60.8 68.7 92.6 87.9
2 57.0 67.7 92.1 84.2
3 65.0 74.0 90.2 83.1
4 58.6 66.3 96.5 85.7
5 61.7 69.8 99.1 90.3