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 (%) 94% (V High) 7.39 73
Liver Fluke (%) 56% (Average) 30.22 100

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 (%) 101 269 12% of progeny were TB Reactors 10888 6% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 100 268 12% of progeny were TB Reactors 10740 6% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 112 141 29% of progeny had damaged livers 693 26% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 112 141 29% of progeny had damaged livers 690 26% 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 101 100 112 112
Total Progeny Records 269 268 141 141
Average Progeny Prevalence 12% of progeny were TB Reactors 12% of progeny were TB Reactors 29% of progeny had damaged livers 29% of progeny had damaged livers
Total Herdmate Records 10888 10740 693 690
Average Herdmate Prevalence 6% of herdmates were TB reactors 6% of herdmates were TB reactors 26% of herdmates had damaged livers 26% 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