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 (%) 96% (V High) 7.26 76
Liver Fluke (%) 51% (Average) 31.33 98

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 (%) 179 534 2% of progeny were TB Reactors 34398 2% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 171 522 2% of progeny were TB Reactors 32748 2% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 141 224 14% of progeny had damaged livers 1783 15% of herdmates had damaged livers Progeny had lower (better) prevalance than herdmates
May 2025 Liver Fluke (%) 141 223 14% of progeny had damaged livers 1766 15% 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 179 171 141 141
Total Progeny Records 534 522 224 223
Average Progeny Prevalence 2% of progeny were TB Reactors 2% of progeny were TB Reactors 14% of progeny had damaged livers 14% of progeny had damaged livers
Total Herdmate Records 34398 32748 1783 1766
Average Herdmate Prevalence 2% of herdmates were TB reactors 2% 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 lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates