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 (%) 96% (V High) 6.68 87
Liver Fluke (%) 51% (Average) 30.28 100

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 (%) 219 581 3% of progeny were TB Reactors 29837 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 207 547 2% of progeny were TB Reactors 28422 3% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 120 165 7% of progeny had damaged livers 1975 8% of herdmates had damaged livers Progeny had lower (better) prevalance than herdmates
May 2025 Liver Fluke (%) 116 161 7% of progeny had damaged livers 1950 8% of herdmates had damaged livers Progeny had lower (better) 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 219 207 120 116
Total Progeny Records 581 547 165 161
Average Progeny Prevalence 3% of progeny were TB Reactors 2% of progeny were TB Reactors 7% of progeny had damaged livers 7% of progeny had damaged livers
Total Herdmate Records 29837 28422 1975 1950
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 8% of herdmates had damaged livers 8% of herdmates had damaged livers
Interpretation Progeny had same prevalance as herdmates Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates