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 (%) 82% (V High) 10.58 10
Liver Fluke (%) 40% (Average) 33.19 12

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 (%) 15 44 11% of progeny were TB Reactors 1959 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 15 44 11% of progeny were TB Reactors 1957 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 12 30 10% of progeny had damaged livers 98 11% of herdmates had damaged livers Progeny had lower (better) prevalance than herdmates
May 2025 Liver Fluke (%) 12 30 10% of progeny had damaged livers 94 12% 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 15 15 12 12
Total Progeny Records 44 44 30 30
Average Progeny Prevalence 11% of progeny were TB Reactors 11% of progeny were TB Reactors 10% of progeny had damaged livers 10% of progeny had damaged livers
Total Herdmate Records 1959 1957 98 94
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 11% of herdmates had damaged livers 12% 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