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) 7.33 74
Liver Fluke (%) 76% (High) 32.32 58

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 (%) 313 759 5% of progeny were TB Reactors 37387 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 312 758 5% of progeny were TB Reactors 37278 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 172 189 33% of progeny had damaged livers 1013 28% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 172 189 33% of progeny had damaged livers 1013 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 313 312 172 172
Total Progeny Records 759 758 189 189
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 33% of progeny had damaged livers 33% of progeny had damaged livers
Total Herdmate Records 37387 37278 1013 1013
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 28% of herdmates had damaged livers 28% 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