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 (%) 88% (V High) 8.18 56
Liver Fluke (%) 31% (Low) 32.91 75

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 (%) 58 90 4% of progeny were TB Reactors 8402 8% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 58 90 4% of progeny were TB Reactors 8402 8% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 8 8 13% of progeny had damaged livers 46 28% of herdmates had damaged livers Progeny had lower (better) prevalance than herdmates
May 2025 Liver Fluke (%) 8 8 13% of progeny had damaged livers 42 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 58 58 8 8
Total Progeny Records 90 90 8 8
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 13% of progeny had damaged livers 13% of progeny had damaged livers
Total Herdmate Records 8402 8402 46 42
Average Herdmate Prevalence 8% of herdmates were TB reactors 8% of herdmates were TB reactors 28% of herdmates had damaged livers 30% of herdmates had damaged livers
Interpretation Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates