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 (%) 96% (V High) 7.93 61
Liver Fluke (%) 53% (Average) 33.65 2

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 (%) 192 551 3% of progeny were TB Reactors 31610 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 179 523 3% of progeny were TB Reactors 29519 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 86 127 8% of progeny had damaged livers 1320 8% of herdmates had damaged livers Progeny had same prevalance as herdmates
May 2025 Liver Fluke (%) 82 123 7% of progeny had damaged livers 1295 8% 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 192 179 86 82
Total Progeny Records 551 523 127 123
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 8% of progeny had damaged livers 7% of progeny had damaged livers
Total Herdmate Records 31610 29519 1320 1295
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 8% of herdmates had damaged livers 8% of herdmates had damaged livers
Interpretation Progeny had same prevalance as herdmates Progeny had same prevalance as herdmates Progeny had same prevalance as herdmates Progeny had lower (better) prevalance than herdmates