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) 8.93 37
Liver Fluke (%) 55% (Average) 30.94 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 (%) 628 1592 8% of progeny were TB Reactors 57394 6% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 628 1592 8% of progeny were TB Reactors 57394 6% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 91 96 46% of progeny had damaged livers 400 44% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 91 96 46% of progeny had damaged livers 400 44% 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 628 628 91 91
Total Progeny Records 1592 1592 96 96
Average Progeny Prevalence 8% of progeny were TB Reactors 8% of progeny were TB Reactors 46% of progeny had damaged livers 46% of progeny had damaged livers
Total Herdmate Records 57394 57394 400 400
Average Herdmate Prevalence 6% of herdmates were TB reactors 6% of herdmates were TB reactors 44% of herdmates had damaged livers 44% 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