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) 8.41 50
Liver Fluke (%) 84% (V High) 29.71 50

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 (%) 900 2255 5% of progeny were TB Reactors 109155 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 892 2245 5% of progeny were TB Reactors 108339 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 1081 1347 18% of progeny had damaged livers 7734 18% of herdmates had damaged livers Progeny had same prevalance as herdmates
May 2025 Liver Fluke (%) 1078 1344 19% of progeny had damaged livers 7707 18% 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 900 892 1081 1078
Total Progeny Records 2255 2245 1347 1344
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 18% of progeny had damaged livers 19% of progeny had damaged livers
Total Herdmate Records 109155 108339 7734 7707
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 18% of herdmates had damaged livers 18% of herdmates had damaged livers
Interpretation Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had same prevalance as herdmates Progeny had higher (worse) prevalance than herdmates