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) 8.77 41
Liver Fluke (%) 77% (High) 31.62 93

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 (%) 558 1163 5% of progeny were TB Reactors 79092 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 552 1157 5% of progeny were TB Reactors 78180 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 629 792 13% of progeny had damaged livers 6279 12% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 626 789 13% of progeny had damaged livers 6245 12% 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 558 552 629 626
Total Progeny Records 1163 1157 792 789
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 13% of progeny had damaged livers 13% of progeny had damaged livers
Total Herdmate Records 79092 78180 6279 6245
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 12% 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 higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates