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 (%) 98% (V High) 5.76 96
Liver Fluke (%) 75% (High) 30.99 99

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 (%) 458 1183 3% of progeny were TB Reactors 53602 4% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 454 1179 3% of progeny were TB Reactors 53035 4% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 556 692 22% of progeny had damaged livers 4101 20% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 552 687 22% of progeny had damaged livers 4065 20% 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 458 454 556 552
Total Progeny Records 1183 1179 692 687
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 22% of progeny had damaged livers 22% of progeny had damaged livers
Total Herdmate Records 53602 53035 4101 4065
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 20% of herdmates had damaged livers 20% of herdmates had damaged livers
Interpretation Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates