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 (%) 96% (V High) 7.51 70
Liver Fluke (%) 61% (High) 32.55 44

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 (%) 188 389 4% of progeny were TB Reactors 24392 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 184 382 4% of progeny were TB Reactors 23517 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 201 272 19% of progeny had damaged livers 1762 15% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 196 266 20% of progeny had damaged livers 1729 15% 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 188 184 201 196
Total Progeny Records 389 382 272 266
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 19% of progeny had damaged livers 20% of progeny had damaged livers
Total Herdmate Records 24392 23517 1762 1729
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 15% of herdmates had damaged livers 15% of herdmates had damaged livers
Interpretation Progeny had same prevalance as herdmates Progeny had same prevalance as herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates