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 (%) 97% (V High) 7.3 75
Liver Fluke (%) 59% (Average) 31.41 96

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 (%) 267 781 3% of progeny were TB Reactors 47666 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 243 712 3% of progeny were TB Reactors 43638 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 179 267 9% of progeny had damaged livers 3293 7% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 172 260 9% of progeny had damaged livers 3254 7% 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 267 243 179 172
Total Progeny Records 781 712 267 260
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 9% of progeny had damaged livers 9% of progeny had damaged livers
Total Herdmate Records 47666 43638 3293 3254
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 7% of herdmates had damaged livers 7% 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