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 (%) 89% (V High) 8.26 54
Liver Fluke (%) 39% (Low) 32.01 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 (%) 30 131 4% of progeny were TB Reactors 4270 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 29 130 4% of progeny were TB Reactors 4160 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 23 40 8% of progeny had damaged livers 124 18% of herdmates had damaged livers Progeny had lower (better) prevalance than herdmates
May 2025 Liver Fluke (%) 20 37 8% of progeny had damaged livers 103 20% 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 30 29 23 20
Total Progeny Records 131 130 40 37
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 8% of progeny had damaged livers 8% of progeny had damaged livers
Total Herdmate Records 4270 4160 124 103
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 18% of herdmates had damaged livers 20% 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