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) 7.2 77
Liver Fluke (%) 91% (V High) 30.33 100

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 (%) 1807 4828 5% of progeny were TB Reactors 177726 5% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 1805 4826 5% of progeny were TB Reactors 177436 5% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 1914 2318 27% of progeny had damaged livers 11212 25% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 1912 2316 27% of progeny had damaged livers 11205 25% 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 1807 1805 1914 1912
Total Progeny Records 4828 4826 2318 2316
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 27% of progeny had damaged livers 27% of progeny had damaged livers
Total Herdmate Records 177726 177436 11212 11205
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 25% of herdmates had damaged livers 25% 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