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) 7.57 69
Liver Fluke (%) 85% (V High) 30.6 100

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 (%) 739 1640 5% of progeny were TB Reactors 67188 5% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 737 1637 5% of progeny were TB Reactors 66508 5% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 1056 1411 25% of progeny had damaged livers 5934 21% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 1054 1409 25% of progeny had damaged livers 5926 21% 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 739 737 1056 1054
Total Progeny Records 1640 1637 1411 1409
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 25% of progeny had damaged livers 25% of progeny had damaged livers
Total Herdmate Records 67188 66508 5934 5926
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 21% of herdmates had damaged livers 21% 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