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 (%) 97% (V High) 3.86 100
Liver Fluke (%) 59% (Average) 32.32 58

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 (%) 212 557 1% of progeny were TB Reactors 29626 3% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 212 557 1% of progeny were TB Reactors 29627 3% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 201 256 26% of progeny had damaged livers 1633 23% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 200 255 26% of progeny had damaged livers 1625 23% 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 212 212 201 200
Total Progeny Records 557 557 256 255
Average Progeny Prevalence 1% of progeny were TB Reactors 1% of progeny were TB Reactors 26% of progeny had damaged livers 26% of progeny had damaged livers
Total Herdmate Records 29626 29627 1633 1625
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 23% of herdmates had damaged livers 23% of herdmates had damaged livers
Interpretation Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates