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) 6.69 87
Liver Fluke (%) 93% (V High) 30.34 100

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 (%) 2338 8136 4% of progeny were TB Reactors 255271 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 2296 8059 4% of progeny were TB Reactors 249231 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 2668 3727 16% of progeny had damaged livers 20689 15% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 2634 3684 16% of progeny had damaged livers 20450 15% 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 2338 2296 2668 2634
Total Progeny Records 8136 8059 3727 3684
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 16% of progeny had damaged livers 16% of progeny had damaged livers
Total Herdmate Records 255271 249231 20689 20450
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 15% of herdmates had damaged livers 15% 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