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) 7.79 65
Liver Fluke (%) 50% (Average) 34.32 0

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 (%) 262 716 6% of progeny were TB Reactors 21899 5% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 261 715 6% of progeny were TB Reactors 21805 5% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 78 83 45% of progeny had damaged livers 414 27% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 78 83 45% of progeny had damaged livers 413 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 262 261 78 78
Total Progeny Records 716 715 83 83
Average Progeny Prevalence 6% of progeny were TB Reactors 6% of progeny were TB Reactors 45% of progeny had damaged livers 45% of progeny had damaged livers
Total Herdmate Records 21899 21805 414 413
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