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) 5.46 97
Liver Fluke (%) 53% (Average) 31.03 99

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 (%) 183 420 3% of progeny were TB Reactors 20812 5% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 183 420 3% of progeny were TB Reactors 20812 5% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 100 109 29% of progeny had damaged livers 551 29% of herdmates had damaged livers Progeny had same prevalance as herdmates
May 2025 Liver Fluke (%) 100 109 29% of progeny had damaged livers 551 29% of herdmates had damaged livers Progeny had same prevalance as 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 183 183 100 100
Total Progeny Records 420 420 109 109
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 29% of progeny had damaged livers 29% of progeny had damaged livers
Total Herdmate Records 20812 20812 551 551
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 same prevalance as herdmates Progeny had same prevalance as herdmates