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) 8.62 45
Liver Fluke (%) 83% (V High) 30.65 100

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 (%) 1200 3728 6% of progeny were TB Reactors 120533 6% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 1199 3726 6% of progeny were TB Reactors 120494 6% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 518 586 39% of progeny had damaged livers 2877 32% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 518 586 39% of progeny had damaged livers 2875 32% 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 1200 1199 518 518
Total Progeny Records 3728 3726 586 586
Average Progeny Prevalence 6% of progeny were TB Reactors 6% of progeny were TB Reactors 39% of progeny had damaged livers 39% of progeny had damaged livers
Total Herdmate Records 120533 120494 2877 2875
Average Herdmate Prevalence 6% of herdmates were TB reactors 6% of herdmates were TB reactors 32% of herdmates had damaged livers 32% 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