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 (%) 70% (High) 32.34 57

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 (%) 777 2211 6% of progeny were TB Reactors 53737 7% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 777 2211 6% of progeny were TB Reactors 53737 7% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 171 195 64% of progeny had damaged livers 760 52% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 172 196 64% of progeny had damaged livers 790 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 777 777 171 172
Total Progeny Records 2211 2211 195 196
Average Progeny Prevalence 6% of progeny were TB Reactors 6% of progeny were TB Reactors 64% of progeny had damaged livers 64% of progeny had damaged livers
Total Herdmate Records 53737 53737 760 790
Average Herdmate Prevalence 7% of herdmates were TB reactors 7% of herdmates were TB reactors 52% of herdmates had damaged livers 50% of herdmates had damaged livers
Interpretation Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates