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) 8.54 47
Liver Fluke (%) 78% (High) 33.37 7

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 (%) 2268 7799 8% of progeny were TB Reactors 162451 7% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 2267 7798 8% of progeny were TB Reactors 162199 7% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 401 448 49% of progeny had damaged livers 1790 41% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 400 447 49% of progeny had damaged livers 1791 41% 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 2268 2267 401 400
Total Progeny Records 7799 7798 448 447
Average Progeny Prevalence 8% of progeny were TB Reactors 8% of progeny were TB Reactors 49% of progeny had damaged livers 49% of progeny had damaged livers
Total Herdmate Records 162451 162199 1790 1791
Average Herdmate Prevalence 7% of herdmates were TB reactors 7% of herdmates were TB reactors 41% of herdmates had damaged livers 41% 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