The one with more nipples have an advantage.
Things to consider:
The animal came from a sow with a good record.
Legs should be without deformity.
It should also have a good FCR.
Growth rate, if the animal averages 85 kg above in 150 days is a good candidate.
If you would need around 20 new sow you need to have around 40 candidates to monitor.  Start to choose at around 2-3  months old then final selection would be at 150 days or 5 month.
							
				
