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) 10.66 9
Liver Fluke (%) 77% (High) 31.94 81

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 (%) 743 3079 5% of progeny were TB Reactors 96650 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 647 2668 6% of progeny were TB Reactors 83835 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 609 1126 9% of progeny had damaged livers 10765 7% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 584 1087 9% of progeny had damaged livers 10400 7% 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 743 647 609 584
Total Progeny Records 3079 2668 1126 1087
Average Progeny Prevalence 5% of progeny were TB Reactors 6% of progeny were TB Reactors 9% of progeny had damaged livers 9% of progeny had damaged livers
Total Herdmate Records 96650 83835 10765 10400
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 7% of herdmates had damaged livers 7% 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