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) 9.61 23
Liver Fluke (%) 56% (Average) 31.98 78

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 (%) 305 838 4% of progeny were TB Reactors 51067 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 277 772 5% of progeny were TB Reactors 47305 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 139 226 9% of progeny had damaged livers 2432 9% of herdmates had damaged livers Progeny had same prevalance as herdmates
May 2025 Liver Fluke (%) 136 223 9% of progeny had damaged livers 2392 9% of herdmates had damaged livers Progeny had same prevalance as 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 305 277 139 136
Total Progeny Records 838 772 226 223
Average Progeny Prevalence 4% of progeny were TB Reactors 5% of progeny were TB Reactors 9% of progeny had damaged livers 9% of progeny had damaged livers
Total Herdmate Records 51067 47305 2432 2392
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 9% of herdmates had damaged livers 9% of herdmates had damaged livers
Interpretation Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had same prevalance as herdmates Progeny had same prevalance as herdmates