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 (%) 86% (V High) 7.24 76
Liver Fluke (%) 41% (Average) 31.31 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 (%) 42 70 3% of progeny were TB Reactors 7219 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 41 69 3% of progeny were TB Reactors 6812 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 20 22 23% of progeny had damaged livers 124 27% of herdmates had damaged livers Progeny had lower (better) prevalance than herdmates
May 2025 Liver Fluke (%) 20 22 23% of progeny had damaged livers 127 26% 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 42 41 20 20
Total Progeny Records 70 69 22 22
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 23% of progeny had damaged livers 23% of progeny had damaged livers
Total Herdmate Records 7219 6812 124 127
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 27% of herdmates had damaged livers 26% 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