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) 9.1 33
Liver Fluke (%) 58% (Average) 32.69 36

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 (%) 337 1336 3% of progeny were TB Reactors 61689 2% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 328 1291 3% of progeny were TB Reactors 59473 2% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 265 393 12% of progeny had damaged livers 3569 10% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 261 386 12% of progeny had damaged livers 3520 10% 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 337 328 265 261
Total Progeny Records 1336 1291 393 386
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 12% of progeny had damaged livers 12% of progeny had damaged livers
Total Herdmate Records 61689 59473 3569 3520
Average Herdmate Prevalence 2% of herdmates were TB reactors 2% of herdmates were TB reactors 10% of herdmates had damaged livers 10% 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