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 (%) 93% (V High) 9.38 27
Liver Fluke (%) 52% (Average) 32.58 43

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 (%) 134 206 5% of progeny were TB Reactors 24277 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 133 205 5% of progeny were TB Reactors 24015 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 90 107 13% of progeny had damaged livers 918 14% of herdmates had damaged livers Progeny had lower (better) prevalance than herdmates
May 2025 Liver Fluke (%) 89 106 12% of progeny had damaged livers 914 14% of herdmates had damaged livers Progeny had lower (better) 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 134 133 90 89
Total Progeny Records 206 205 107 106
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 13% of progeny had damaged livers 12% of progeny had damaged livers
Total Herdmate Records 24277 24015 918 914
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 14% of herdmates had damaged livers 14% of herdmates had damaged livers
Interpretation Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates