Breeding can help protect your herd from TB and Liver Fluke infection.

PTAs are interpretative of the expected prevalence of TB or Liver Fluke infection in that animal's progeny.
Therefore, lower PTAs are more desirable.

Across All Dairy Breeds

Trait Reliability PTA Percentile
TB (%) 97% (V High) 6.41 90
Liver Fluke (%) 64% (High) 31.48 95

Progeny and Herdmate Performance

Date of Evaluation Trait Total Herds Total Progeny Records Average Progeny Prevalence Total Herdmate Records Average Herdmate Prevalence Interpretation
Sep 2025 TB (%) 169 461 5% of progeny were TB Reactors 19679 5% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 168 460 5% of progeny were TB Reactors 19658 5% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 150 170 35% of progeny had damaged livers 825 31% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 149 169 36% of progeny had damaged livers 823 31% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
Field TB (Current) TB (Previous) Liver Fluke (Current) Liver Fluke (Previous)
Date of Evaluation Sep 2025 May 2025 Sep 2025 May 2025
Trait TB (%) TB (%) Liver Fluke (%) Liver Fluke (%)
Total Herds 169 168 150 149
Total Progeny Records 461 460 170 169
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 35% of progeny had damaged livers 36% of progeny had damaged livers
Total Herdmate Records 19679 19658 825 823
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 31% of herdmates had damaged livers 31% of herdmates had damaged livers
Interpretation Progeny had same prevalance as herdmates Progeny had same prevalance as herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates