Table 6. Analyzing the priority of maintenance characteristics

Layer2 Layer3 Priority Ranking I.R.
Maintenance characteristics Resistance to the cold 0.1482 5 0.0022
Resistance to the dry 0.1760 2
Resistance to the pollution 0.1727 3
Resistance to the disease 0.2387 1
Resistance to the transplant 0.1100 6
Growth rate 0.1544 4