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) 8.3 53
Liver Fluke (%) 75% (High) 32.14 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 (%) 722 1659 5% of progeny were TB Reactors 92199 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 700 1615 5% of progeny were TB Reactors 88681 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 573 800 18% of progeny had damaged livers 6468 14% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 563 790 18% of progeny had damaged livers 6404 14% 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 722 700 573 563
Total Progeny Records 1659 1615 800 790
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 18% of progeny had damaged livers 18% of progeny had damaged livers
Total Herdmate Records 92199 88681 6468 6404
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 14% of herdmates had damaged livers 14% of herdmates had damaged livers
Interpretation Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates