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) 9.24 30
Liver Fluke (%) 84% (V High) 34.7 0

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 (%) 1001 3405 6% of progeny were TB Reactors 106444 5% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 1001 3405 6% of progeny were TB Reactors 106446 5% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 432 489 51% of progeny had damaged livers 2443 39% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 432 489 51% of progeny had damaged livers 2442 39% 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 1001 1001 432 432
Total Progeny Records 3405 3405 489 489
Average Progeny Prevalence 6% of progeny were TB Reactors 6% of progeny were TB Reactors 51% of progeny had damaged livers 51% of progeny had damaged livers
Total Herdmate Records 106444 106446 2443 2442
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 39% of herdmates had damaged livers 39% 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