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 (%) 98% (V High) 8.22 55
Liver Fluke (%) 70% (High) 32.39 50

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 (%) 356 727 6% of progeny were TB Reactors 41526 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 354 725 6% of progeny were TB Reactors 40930 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 368 430 25% of progeny had damaged livers 2610 22% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 368 430 25% of progeny had damaged livers 2608 22% 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 356 354 368 368
Total Progeny Records 727 725 430 430
Average Progeny Prevalence 6% of progeny were TB Reactors 6% of progeny were TB Reactors 25% of progeny had damaged livers 25% of progeny had damaged livers
Total Herdmate Records 41526 40930 2610 2608
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 22% of herdmates had damaged livers 22% 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