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 (%) 98% (V High) 7.5 70
Liver Fluke (%) 61% (High) 30.83 99

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 (%) 322 984 6% of progeny were TB Reactors 33114 7% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 321 981 6% of progeny were TB Reactors 33044 7% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 128 139 40% of progeny had damaged livers 594 32% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 128 139 40% of progeny had damaged livers 593 32% 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 322 321 128 128
Total Progeny Records 984 981 139 139
Average Progeny Prevalence 6% of progeny were TB Reactors 6% of progeny were TB Reactors 40% of progeny had damaged livers 40% of progeny had damaged livers
Total Herdmate Records 33114 33044 594 593
Average Herdmate Prevalence 7% of herdmates were TB reactors 7% of herdmates were TB reactors 32% of herdmates had damaged livers 32% 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