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) 6.52 89
Liver Fluke (%) 58% (Average) 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 (%) 260 620 4% of progeny were TB Reactors 28305 5% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 259 619 4% of progeny were TB Reactors 27976 5% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 159 188 34% of progeny had damaged livers 836 29% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 159 188 34% of progeny had damaged livers 839 29% 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 260 259 159 159
Total Progeny Records 620 619 188 188
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 28305 27976 836 839
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 29% of herdmates had damaged livers 29% 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