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 (%) 96% (V High) 7.54 69
Liver Fluke (%) 48% (Average) 31.78 89

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 (%) 222 437 5% of progeny were TB Reactors 25086 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 221 436 5% of progeny were TB Reactors 24964 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 140 153 29% of progeny had damaged livers 865 25% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 140 153 29% of progeny had damaged livers 864 25% 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 222 221 140 140
Total Progeny Records 437 436 153 153
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 29% of progeny had damaged livers 29% of progeny had damaged livers
Total Herdmate Records 25086 24964 865 864
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 25% of herdmates had damaged livers 25% 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