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) 5.99 95
Liver Fluke (%) 93% (V High) 30.3 100

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 (%) 434 1217 6% of progeny were TB Reactors 52565 6% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 433 1216 6% of progeny were TB Reactors 52387 6% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 242 272 34% of progeny had damaged livers 1365 28% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 242 272 34% of progeny had damaged livers 1364 28% 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 434 433 242 242
Total Progeny Records 1217 1216 272 272
Average Progeny Prevalence 6% of progeny were TB Reactors 6% of progeny were TB Reactors 34% of progeny had damaged livers 34% of progeny had damaged livers
Total Herdmate Records 52565 52387 1365 1364
Average Herdmate Prevalence 6% of herdmates were TB reactors 6% of herdmates were TB reactors 28% of herdmates had damaged livers 28% 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