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) 7.58 68
Liver Fluke (%) 61% (High) 33.05 18

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 (%) 450 1099 7% of progeny were TB Reactors 30983 7% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 450 1099 7% of progeny were TB Reactors 30983 7% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 73 84 71% of progeny had damaged livers 349 49% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 72 83 72% of progeny had damaged livers 340 50% 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 450 450 73 72
Total Progeny Records 1099 1099 84 83
Average Progeny Prevalence 7% of progeny were TB Reactors 7% of progeny were TB Reactors 71% of progeny had damaged livers 72% of progeny had damaged livers
Total Herdmate Records 30983 30983 349 340
Average Herdmate Prevalence 7% of herdmates were TB reactors 7% of herdmates were TB reactors 49% of herdmates had damaged livers 50% 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