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) 7.87 62
Liver Fluke (%) 78% (High) 33.59 3

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 (%) 863 1911 6% of progeny were TB Reactors 73040 6% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 863 1911 6% of progeny were TB Reactors 73040 6% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 540 606 46% of progeny had damaged livers 2701 36% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 540 606 46% of progeny had damaged livers 2700 36% 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 863 863 540 540
Total Progeny Records 1911 1911 606 606
Average Progeny Prevalence 6% of progeny were TB Reactors 6% of progeny were TB Reactors 46% of progeny had damaged livers 46% of progeny had damaged livers
Total Herdmate Records 73040 73040 2701 2700
Average Herdmate Prevalence 6% of herdmates were TB reactors 6% of herdmates were TB reactors 36% of herdmates had damaged livers 36% 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