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) 9.18 32
Liver Fluke (%) 68% (High) 33.44 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 (%) 600 1853 4% of progeny were TB Reactors 93742 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 554 1723 4% of progeny were TB Reactors 87688 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 341 522 10% of progeny had damaged livers 5440 6% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 329 509 10% of progeny had damaged livers 5344 6% 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 600 554 341 329
Total Progeny Records 1853 1723 522 509
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 10% of progeny had damaged livers 10% of progeny had damaged livers
Total Herdmate Records 93742 87688 5440 5344
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 6% of herdmates had damaged livers 6% 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