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 (%) 97% (V High) 6.75 86
Liver Fluke (%) 65% (High) 30.9 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 (%) 316 603 5% of progeny were TB Reactors 29129 5% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 312 598 5% of progeny were TB Reactors 28710 5% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 287 339 23% of progeny had damaged livers 1862 19% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 284 336 23% of progeny had damaged livers 1825 19% 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 316 312 287 284
Total Progeny Records 603 598 339 336
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 23% of progeny had damaged livers 23% of progeny had damaged livers
Total Herdmate Records 29129 28710 1862 1825
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 19% of herdmates had damaged livers 19% 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