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 (%) 88% (V High) 8.38 50
Liver Fluke (%) 46% (Average) 32.78 68

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 (%) 54 108 4% of progeny were TB Reactors 9396 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 50 102 4% of progeny were TB Reactors 8792 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 29 48 15% of progeny had damaged livers 555 5% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 28 47 15% of progeny had damaged livers 561 6% 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 54 50 29 28
Total Progeny Records 108 102 48 47
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 15% of progeny had damaged livers 15% of progeny had damaged livers
Total Herdmate Records 9396 8792 555 561
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 5% of herdmates had damaged livers 6% 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