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 (%) 98% (V High) 8.1 58
Liver Fluke (%) 61% (High) 31.94 51

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 (%) 356 872 6% of progeny were TB Reactors 41201 5% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 353 868 6% of progeny were TB Reactors 40908 5% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 209 250 34% of progeny had damaged livers 1434 27% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 209 250 34% of progeny had damaged livers 1433 27% 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 356 353 209 209
Total Progeny Records 872 868 250 250
Average Progeny Prevalence 6% of progeny were TB Reactors 6% of progeny were TB Reactors 34% of progeny had damaged livers 34% of progeny had damaged livers
Total Herdmate Records 41201 40908 1434 1433
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 27% of herdmates had damaged livers 27% 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