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) 6.51 89
Liver Fluke (%) 57% (Average) 31.77 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 (%) 255 625 3% of progeny were TB Reactors 38197 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 251 620 3% of progeny were TB Reactors 37594 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 275 358 17% of progeny had damaged livers 2525 14% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 272 355 17% of progeny had damaged livers 2517 13% 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 255 251 275 272
Total Progeny Records 625 620 358 355
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 17% of progeny had damaged livers 17% of progeny had damaged livers
Total Herdmate Records 38197 37594 2525 2517
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 14% of herdmates had damaged livers 13% 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