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 (%) 99% (V High) 7.38 73
Liver Fluke (%) 84% (V High) 33.4 6

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 (%) 1175 3737 3% of progeny were TB Reactors 162729 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 1128 3607 3% of progeny were TB Reactors 155829 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 1026 1438 17% of progeny had damaged livers 11076 13% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 992 1400 17% of progeny had damaged livers 10867 13% 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 1175 1128 1026 992
Total Progeny Records 3737 3607 1438 1400
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 17% of progeny had damaged livers 17% of progeny had damaged livers
Total Herdmate Records 162729 155829 11076 10867
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 13% of herdmates had damaged livers 13% 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