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) 9.43 27
Liver Fluke (%) 80% (V High) 33.42 5

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 (%) 1790 4810 10% of progeny were TB Reactors 133445 8% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 1789 4808 10% of progeny were TB Reactors 133146 8% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 405 451 57% of progeny had damaged livers 1830 42% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 404 450 57% of progeny had damaged livers 1829 42% 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 1790 1789 405 404
Total Progeny Records 4810 4808 451 450
Average Progeny Prevalence 10% of progeny were TB Reactors 10% of progeny were TB Reactors 57% of progeny had damaged livers 57% of progeny had damaged livers
Total Herdmate Records 133445 133146 1830 1829
Average Herdmate Prevalence 8% of herdmates were TB reactors 8% of herdmates were TB reactors 42% of herdmates had damaged livers 42% 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