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) 9.12 33
Liver Fluke (%) 92% (V High) 33.03 19

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 (%) 3397 13348 8% of progeny were TB Reactors 247449 7% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 3397 13348 8% of progeny were TB Reactors 247447 7% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 1437 1790 52% of progeny had damaged livers 6425 41% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 1436 1789 52% of progeny had damaged livers 6423 41% 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 3397 3397 1437 1436
Total Progeny Records 13348 13348 1790 1789
Average Progeny Prevalence 8% of progeny were TB Reactors 8% of progeny were TB Reactors 52% of progeny had damaged livers 52% of progeny had damaged livers
Total Herdmate Records 247449 247447 6425 6423
Average Herdmate Prevalence 7% of herdmates were TB reactors 7% of herdmates were TB reactors 41% of herdmates had damaged livers 41% 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