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 (%) 97% (V High) 6.74 86
Liver Fluke (%) 66% (High) 32.17 68

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 (%) 232 523 3% of progeny were TB Reactors 21232 4% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 229 518 3% of progeny were TB Reactors 20911 4% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 273 361 24% of progeny had damaged livers 1589 21% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 272 359 24% of progeny had damaged livers 1582 22% 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 232 229 273 272
Total Progeny Records 523 518 361 359
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 24% of progeny had damaged livers 24% of progeny had damaged livers
Total Herdmate Records 21232 20911 1589 1582
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 21% of herdmates had damaged livers 22% of herdmates had damaged livers
Interpretation Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates