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 (%) 96% (V High) 9.32 29
Liver Fluke (%) 52% (Average) 32.68 37

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 (%) 268 574 5% of progeny were TB Reactors 44307 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 259 562 5% of progeny were TB Reactors 42939 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 119 146 15% of progeny had damaged livers 1268 11% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 118 145 15% of progeny had damaged livers 1253 11% 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 268 259 119 118
Total Progeny Records 574 562 146 145
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 15% of progeny had damaged livers 15% of progeny had damaged livers
Total Herdmate Records 44307 42939 1268 1253
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 11% of herdmates had damaged livers 11% of herdmates had damaged livers
Interpretation Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates