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 (%) 99% (V High) 7.13 78
Liver Fluke (%) 89% (V High) 30.33 100

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 (%) 1527 4117 5% of progeny were TB Reactors 163265 5% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 1524 4114 5% of progeny were TB Reactors 162999 5% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 1447 1795 29% of progeny had damaged livers 8433 25% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 1447 1795 29% of progeny had damaged livers 8432 25% of herdmates had damaged livers Progeny had higher (worse) 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 1527 1524 1447 1447
Total Progeny Records 4117 4114 1795 1795
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 29% of progeny had damaged livers 29% of progeny had damaged livers
Total Herdmate Records 163265 162999 8433 8432
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 25% of herdmates had damaged livers 25% of herdmates had damaged livers
Interpretation Progeny had same prevalance as herdmates Progeny had same prevalance as herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates