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 (%) 95% (V High) 5.81 95
Liver Fluke (%) 56% (Average) 31.4 96

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 (%) 178 379 2% of progeny were TB Reactors 23307 3% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 176 377 2% of progeny were TB Reactors 22986 3% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 193 224 12% of progeny had damaged livers 1651 11% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 189 219 12% of progeny had damaged livers 1627 11% 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 178 176 193 189
Total Progeny Records 379 377 224 219
Average Progeny Prevalence 2% of progeny were TB Reactors 2% of progeny were TB Reactors 12% of progeny had damaged livers 12% of progeny had damaged livers
Total Herdmate Records 23307 22986 1651 1627
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 11% of herdmates had damaged livers 11% 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