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 (%) 94% (V High) 7.19 77
Liver Fluke (%) 49% (Average) 32.57 43

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 (%) 147 341 1% of progeny were TB Reactors 22413 2% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 144 336 1% of progeny were TB Reactors 21718 2% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 90 114 16% of progeny had damaged livers 862 9% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 89 113 15% of progeny had damaged livers 849 9% 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 147 144 90 89
Total Progeny Records 341 336 114 113
Average Progeny Prevalence 1% of progeny were TB Reactors 1% of progeny were TB Reactors 16% of progeny had damaged livers 15% of progeny had damaged livers
Total Herdmate Records 22413 21718 862 849
Average Herdmate Prevalence 2% of herdmates were TB reactors 2% of herdmates were TB reactors 9% of herdmates had damaged livers 9% 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