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) 7.57 69
Liver Fluke (%) 72% (High) 32.29 60

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 (%) 789 1579 6% of progeny were TB Reactors 70238 5% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 789 1579 6% of progeny were TB Reactors 70237 5% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 424 455 42% of progeny had damaged livers 2104 34% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 422 453 42% of progeny had damaged livers 2099 34% 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 789 789 424 422
Total Progeny Records 1579 1579 455 453
Average Progeny Prevalence 6% of progeny were TB Reactors 6% of progeny were TB Reactors 42% of progeny had damaged livers 42% of progeny had damaged livers
Total Herdmate Records 70238 70237 2104 2099
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 34% of herdmates had damaged livers 34% 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