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) 9.16 32
Liver Fluke (%) 72% (High) 32.07 73

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 (%) 701 1701 4% of progeny were TB Reactors 99794 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 668 1637 4% of progeny were TB Reactors 94956 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 425 578 9% of progeny had damaged livers 5931 7% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 410 562 9% of progeny had damaged livers 5814 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 701 668 425 410
Total Progeny Records 1701 1637 578 562
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 9% of progeny had damaged livers 9% of progeny had damaged livers
Total Herdmate Records 99794 94956 5931 5814
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 7% 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