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) 6.36 91
Liver Fluke (%) 60% (High) 32.89 26

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 (%) 234 573 3% of progeny were TB Reactors 25341 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 222 545 3% of progeny were TB Reactors 24140 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 219 348 14% of progeny had damaged livers 2394 9% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 211 339 13% of progeny had damaged livers 2364 9% 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 234 222 219 211
Total Progeny Records 573 545 348 339
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 14% of progeny had damaged livers 13% of progeny had damaged livers
Total Herdmate Records 25341 24140 2394 2364
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 9% of herdmates had damaged livers 9% 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