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 (%) 95% (V High) 8.25 54
Liver Fluke (%) 50% (Average) 31.09 59

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 (%) 177 374 3% of progeny were TB Reactors 26955 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 170 360 3% of progeny were TB Reactors 25597 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 112 145 10% of progeny had damaged livers 1451 11% of herdmates had damaged livers Progeny had lower (better) prevalance than herdmates
May 2025 Liver Fluke (%) 112 145 10% of progeny had damaged livers 1444 11% 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 177 170 112 112
Total Progeny Records 374 360 145 145
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 10% of progeny had damaged livers 10% of progeny had damaged livers
Total Herdmate Records 26955 25597 1451 1444
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 11% of herdmates had damaged livers 11% of herdmates had damaged livers
Interpretation Progeny had same prevalance as herdmates Progeny had same prevalance as herdmates Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates