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 (%) 98% (V High) 6.56 88
Liver Fluke (%) 71% (High) 31.73 91

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 (%) 358 775 4% of progeny were TB Reactors 32630 5% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 357 774 4% of progeny were TB Reactors 32383 5% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 338 441 34% of progeny had damaged livers 1988 27% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 338 441 34% of progeny had damaged livers 1983 27% 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 358 357 338 338
Total Progeny Records 775 774 441 441
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 34% of progeny had damaged livers 34% of progeny had damaged livers
Total Herdmate Records 32630 32383 1988 1983
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 27% of herdmates had damaged livers 27% of herdmates had damaged livers
Interpretation Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates