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 (%) 85% (V High) 11.03 6
Liver Fluke (%) 34% (Low) 32.74 33

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 (%) 35 51 16% of progeny were TB Reactors 2879 11% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 35 51 16% of progeny were TB Reactors 2879 11% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 3 3 33% of progeny had damaged livers 14 35% of herdmates had damaged livers Progeny had lower (better) prevalance than herdmates
May 2025 Liver Fluke (%) 3 3 33% of progeny had damaged livers 14 35% 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 35 35 3 3
Total Progeny Records 51 51 3 3
Average Progeny Prevalence 16% of progeny were TB Reactors 16% of progeny were TB Reactors 33% of progeny had damaged livers 33% of progeny had damaged livers
Total Herdmate Records 2879 2879 14 14
Average Herdmate Prevalence 11% of herdmates were TB reactors 11% of herdmates were TB reactors 35% of herdmates had damaged livers 35% 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