Question: asking about breed of pig 
Answer: recommended to  1. large white yorkshire  2. middle white yorkshire  3. landrace   
economic traits

litter size
weight at birth.
weaning weight.
litter size at weaning.
growth rate: 
birth to weaning  : weaning wt.- ­­–birth wt./ 56
weaning to 154 days: weight at 154 days-weaning weigh/ 98 days
weight at 154 days to 210 days : wt.at 210 days- wt. at 154 days / 154 days.
feed efficiency:  feed consumed per of kg of live weight.