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 (%) 99% (V High) 9.06 34
Liver Fluke (%) 66% (High) 32.75 33

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 (%) 495 1245 8% of progeny were TB Reactors 31606 7% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 495 1245 8% of progeny were TB Reactors 31606 7% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 104 137 59% of progeny had damaged livers 447 49% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 104 137 59% of progeny had damaged livers 447 49% 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 495 495 104 104
Total Progeny Records 1245 1245 137 137
Average Progeny Prevalence 8% of progeny were TB Reactors 8% of progeny were TB Reactors 59% of progeny had damaged livers 59% of progeny had damaged livers
Total Herdmate Records 31606 31606 447 447
Average Herdmate Prevalence 7% of herdmates were TB reactors 7% of herdmates were TB reactors 49% of herdmates had damaged livers 49% 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