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) 7.47 71
Liver Fluke (%) 69% (High) 31.39 97

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 (%) 401 784 4% of progeny were TB Reactors 45285 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 401 784 4% of progeny were TB Reactors 45288 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 323 372 28% of progeny had damaged livers 2267 22% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 323 372 28% of progeny had damaged livers 2267 22% 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 401 401 323 323
Total Progeny Records 784 784 372 372
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 28% of progeny had damaged livers 28% of progeny had damaged livers
Total Herdmate Records 45285 45288 2267 2267
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 22% of herdmates had damaged livers 22% 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