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 (%) 88% (V High) 11.44 4
Liver Fluke (%) 41% (Average) 32.01 77

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 (%) 61 103 12% of progeny were TB Reactors 7232 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 60 102 12% of progeny were TB Reactors 7083 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 84 121 15% of progeny had damaged livers 1057 12% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 82 119 14% of progeny had damaged livers 1056 12% 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 61 60 84 82
Total Progeny Records 103 102 121 119
Average Progeny Prevalence 12% of progeny were TB Reactors 12% of progeny were TB Reactors 15% of progeny had damaged livers 14% of progeny had damaged livers
Total Herdmate Records 7232 7083 1057 1056
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 12% of herdmates had damaged livers 12% 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