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 (%) 97% (V High) 8.23 54
Liver Fluke (%) 53% (Average) 32.35 50

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 (%) 277 748 4% of progeny were TB Reactors 39974 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 258 692 4% of progeny were TB Reactors 36746 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 121 192 8% of progeny had damaged livers 2077 10% of herdmates had damaged livers Progeny had lower (better) prevalance than herdmates
May 2025 Liver Fluke (%) 120 191 8% of progeny had damaged livers 2067 10% 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 277 258 121 120
Total Progeny Records 748 692 192 191
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 39974 36746 2077 2067
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 10% of herdmates had damaged livers 10% of herdmates had damaged livers
Interpretation Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates