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) 8.49 48
Liver Fluke (%) 59% (Average) 31.12 98

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 (%) 322 915 6% of progeny were TB Reactors 35748 5% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 322 915 6% of progeny were TB Reactors 35746 5% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 198 215 29% of progeny had damaged livers 1165 30% of herdmates had damaged livers Progeny had lower (better) prevalance than herdmates
May 2025 Liver Fluke (%) 198 215 29% of progeny had damaged livers 1165 30% 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 322 322 198 198
Total Progeny Records 915 915 215 215
Average Progeny Prevalence 6% of progeny were TB Reactors 6% of progeny were TB Reactors 29% of progeny had damaged livers 29% of progeny had damaged livers
Total Herdmate Records 35748 35746 1165 1165
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 30% of herdmates had damaged livers 30% 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