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) 7.05 80
Liver Fluke (%) 58% (Average) 32.5 48

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 (%) 588 1126 8% of progeny were TB Reactors 44296 8% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 588 1126 8% of progeny were TB Reactors 44296 8% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 121 128 62% of progeny had damaged livers 527 46% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 121 128 62% of progeny had damaged livers 527 46% 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 588 588 121 121
Total Progeny Records 1126 1126 128 128
Average Progeny Prevalence 8% of progeny were TB Reactors 8% of progeny were TB Reactors 62% of progeny had damaged livers 62% of progeny had damaged livers
Total Herdmate Records 44296 44296 527 527
Average Herdmate Prevalence 8% of herdmates were TB reactors 8% of herdmates were TB reactors 46% of herdmates had damaged livers 46% of herdmates had damaged livers
Interpretation Progeny had same prevalance as herdmates Progeny had same prevalance as herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates