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) 7.49 70
Liver Fluke (%) 67% (High) 30.31 100

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 (%) 324 946 5% of progeny were TB Reactors 42859 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 319 939 5% of progeny were TB Reactors 42329 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 336 494 19% of progeny had damaged livers 2693 18% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 336 494 19% of progeny had damaged livers 2695 18% 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 324 319 336 336
Total Progeny Records 946 939 494 494
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 19% of progeny had damaged livers 19% of progeny had damaged livers
Total Herdmate Records 42859 42329 2693 2695
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 18% of herdmates had damaged livers 18% 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