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) 8.87 39
Liver Fluke (%) 88% (V High) 32.69 36

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 (%) 1683 4580 7% of progeny were TB Reactors 151082 5% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 1678 4574 7% of progeny were TB Reactors 150699 5% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 1226 1406 41% of progeny had damaged livers 6183 32% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 1226 1406 41% of progeny had damaged livers 6183 32% 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 1683 1678 1226 1226
Total Progeny Records 4580 4574 1406 1406
Average Progeny Prevalence 7% of progeny were TB Reactors 7% of progeny were TB Reactors 41% of progeny had damaged livers 41% of progeny had damaged livers
Total Herdmate Records 151082 150699 6183 6183
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 32% of herdmates had damaged livers 32% 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