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) 6.41 90
Liver Fluke (%) 81% (V High) 30.59 100

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 (%) 686 1555 4% of progeny were TB Reactors 82705 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 686 1555 4% of progeny were TB Reactors 82701 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 682 795 22% of progeny had damaged livers 4644 20% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 680 793 22% of progeny had damaged livers 4630 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 686 686 682 680
Total Progeny Records 1555 1555 795 793
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 22% of progeny had damaged livers 22% of progeny had damaged livers
Total Herdmate Records 82705 82701 4644 4630
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 same prevalance as herdmates Progeny had same prevalance as herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates