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) 9.41 27
Liver Fluke (%) 93% (V High) 30.98 99

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 (%) 4508 19173 10% of progeny were TB Reactors 303949 7% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 4507 19172 10% of progeny were TB Reactors 303889 7% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 1471 1832 49% of progeny had damaged livers 6324 41% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 1470 1831 49% of progeny had damaged livers 6316 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 4508 4507 1471 1470
Total Progeny Records 19173 19172 1832 1831
Average Progeny Prevalence 10% of progeny were TB Reactors 10% of progeny were TB Reactors 49% of progeny had damaged livers 49% of progeny had damaged livers
Total Herdmate Records 303949 303889 6324 6316
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