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 (%) 99% (V High) 9.77 21
Liver Fluke (%) 54% (Average) 33.45 5

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 (%) 767 1480 12% of progeny were TB Reactors 43417 9% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 767 1480 12% of progeny were TB Reactors 43417 9% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 20 23 74% of progeny had damaged livers 64 66% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 20 23 74% of progeny had damaged livers 64 66% 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 767 767 20 20
Total Progeny Records 1480 1480 23 23
Average Progeny Prevalence 12% of progeny were TB Reactors 12% of progeny were TB Reactors 74% of progeny had damaged livers 74% of progeny had damaged livers
Total Herdmate Records 43417 43417 64 64
Average Herdmate Prevalence 9% of herdmates were TB reactors 9% of herdmates were TB reactors 66% of herdmates had damaged livers 66% 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