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 (%) 99% (V High) 7.89 62
Liver Fluke (%) 82% (V High) 33.56 3

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 (%) 692 1580 4% of progeny were TB Reactors 78844 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 686 1573 4% of progeny were TB Reactors 78110 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 639 772 26% of progeny had damaged livers 4827 19% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 637 770 26% of progeny had damaged livers 4812 19% 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 692 686 639 637
Total Progeny Records 1580 1573 772 770
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 26% of progeny had damaged livers 26% of progeny had damaged livers
Total Herdmate Records 78844 78110 4827 4812
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 19% of herdmates had damaged livers 19% 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