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) 6.15 93
Liver Fluke (%) 87% (V High) 30.95 99

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 (%) 807 2504 3% of progeny were TB Reactors 100306 4% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 803 2497 3% of progeny were TB Reactors 99847 4% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 1147 1480 21% of progeny had damaged livers 8205 17% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 1144 1477 21% of progeny had damaged livers 8190 17% 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 807 803 1147 1144
Total Progeny Records 2504 2497 1480 1477
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 21% of progeny had damaged livers 21% of progeny had damaged livers
Total Herdmate Records 100306 99847 8205 8190
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 17% of herdmates had damaged livers 17% 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