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) 7.67 67
Liver Fluke (%) 76% (High) 29.91 100

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 (%) 790 1845 5% of progeny were TB Reactors 80389 5% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 786 1838 5% of progeny were TB Reactors 79659 5% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 515 566 38% of progeny had damaged livers 2596 34% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 514 565 38% of progeny had damaged livers 2588 34% 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 790 786 515 514
Total Progeny Records 1845 1838 566 565
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 38% of progeny had damaged livers 38% of progeny had damaged livers
Total Herdmate Records 80389 79659 2596 2588
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 34% of herdmates had damaged livers 34% 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