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) 9.14 32
Liver Fluke (%) 50% (Average) 32.2 66

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 (%) 315 671 8% of progeny were TB Reactors 24993 6% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 315 671 8% of progeny were TB Reactors 24993 6% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 102 108 44% of progeny had damaged livers 513 33% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 102 108 44% of progeny had damaged livers 510 33% 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 315 315 102 102
Total Progeny Records 671 671 108 108
Average Progeny Prevalence 8% of progeny were TB Reactors 8% of progeny were TB Reactors 44% of progeny had damaged livers 44% of progeny had damaged livers
Total Herdmate Records 24993 24993 513 510
Average Herdmate Prevalence 6% of herdmates were TB reactors 6% of herdmates were TB reactors 33% of herdmates had damaged livers 33% 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