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) 8.95 37
Liver Fluke (%) 65% (High) 33.13 14

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 (%) 1659 4435 10% of progeny were TB Reactors 92283 9% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 1659 4435 10% of progeny were TB Reactors 92283 9% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 24 29 48% of progeny had damaged livers 93 36% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 24 29 48% of progeny had damaged livers 93 36% 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 1659 1659 24 24
Total Progeny Records 4435 4435 29 29
Average Progeny Prevalence 10% of progeny were TB Reactors 10% of progeny were TB Reactors 48% of progeny had damaged livers 48% of progeny had damaged livers
Total Herdmate Records 92283 92283 93 93
Average Herdmate Prevalence 9% of herdmates were TB reactors 9% of herdmates were TB reactors 36% of herdmates had damaged livers 36% 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