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 (%) 93% (V High) 5.43 97
Liver Fluke (%) 44% (Average) 32.79 31

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 (%) 101 230 2% of progeny were TB Reactors 13815 4% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 101 230 2% of progeny were TB Reactors 13814 4% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 73 77 23% of progeny had damaged livers 604 15% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 72 76 22% of progeny had damaged livers 599 15% 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 101 101 73 72
Total Progeny Records 230 230 77 76
Average Progeny Prevalence 2% of progeny were TB Reactors 2% of progeny were TB Reactors 23% of progeny had damaged livers 22% of progeny had damaged livers
Total Herdmate Records 13815 13814 604 599
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 15% of herdmates had damaged livers 15% of herdmates had damaged livers
Interpretation Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates