Carbon Sub Index breakdown

Date of Evaluation Date of Eval. Index Trait PTA *Carbon Cost (€) Contribution Contrib.
PTA * Carbon Cost
May 2025 Milk Sub Index 2.88
Milk (kg) -99.00 -0.014 1.39
Fat (kg) -1.02 -0.375 0.38
Prot (kg) -2.53 -0.441 1.12
Fertility Sub Index 2.30
Calving Interval (days) -1.12 -1.459 1.63
Survival (%) 0.60 1.117 0.67
Calving Sub Index 3.81
Gestation Length (days) -4.14 -0.919 3.81
Beef Sub Index 0.33
Carcass Weight (kg) -2.20 -0.528 1.16
Age of Slaughter (days) 1.93 -0.432 -0.83
Maintenance Sub Index Maint. Sub Index 4.14
Live WT (kg) -13.50 -0.307 4.14
Total Carbon Sub Index 13.46

* Based on an €80/tonne carbon price