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 (%) 97% (V High) 6.56 88
Liver Fluke (%) 67% (High) 31.47 95

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 (%) 338 657 4% of progeny were TB Reactors 42512 5% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 338 657 4% of progeny were TB Reactors 42514 5% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 255 283 28% of progeny had damaged livers 1481 28% of herdmates had damaged livers Progeny had same prevalance as herdmates
May 2025 Liver Fluke (%) 255 283 28% of progeny had damaged livers 1481 28% of herdmates had damaged livers Progeny had same prevalance as 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 338 338 255 255
Total Progeny Records 657 657 283 283
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 28% of progeny had damaged livers 28% of progeny had damaged livers
Total Herdmate Records 42512 42514 1481 1481
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 28% of herdmates had damaged livers 28% of herdmates had damaged livers
Interpretation Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates Progeny had same prevalance as herdmates Progeny had same prevalance as herdmates