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 (%) 98% (V High) 6.58 88
Liver Fluke (%) 70% (High) 30.44 100

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 (%) 402 860 4% of progeny were TB Reactors 50160 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 400 858 4% of progeny were TB Reactors 49935 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 323 383 16% of progeny had damaged livers 2582 17% of herdmates had damaged livers Progeny had lower (better) prevalance than herdmates
May 2025 Liver Fluke (%) 323 383 16% of progeny had damaged livers 2571 17% of herdmates had damaged livers Progeny had lower (better) 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 402 400 323 323
Total Progeny Records 860 858 383 383
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 50160 49935 2582 2571
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 17% of herdmates had damaged livers 17% of herdmates had damaged livers
Interpretation Progeny had same prevalance as herdmates Progeny had same prevalance as herdmates Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates