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) 7.92 62
Liver Fluke (%) 78% (High) 31.37 97

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 (%) 907 2308 4% of progeny were TB Reactors 132849 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 866 2236 4% of progeny were TB Reactors 126924 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 633 900 11% of progeny had damaged livers 7839 10% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 611 876 11% of progeny had damaged livers 7667 10% 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 907 866 633 611
Total Progeny Records 2308 2236 900 876
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 11% of progeny had damaged livers 11% of progeny had damaged livers
Total Herdmate Records 132849 126924 7839 7667
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 10% of herdmates had damaged livers 10% of herdmates had damaged livers
Interpretation Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates