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) 7.83 63
Liver Fluke (%) 54% (Average) 32.36 56

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 (%) 226 604 4% of progeny were TB Reactors 36236 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 217 587 4% of progeny were TB Reactors 34920 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 118 158 18% of progeny had damaged livers 1550 13% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 114 153 18% of progeny had damaged livers 1509 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 226 217 118 114
Total Progeny Records 604 587 158 153
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 18% of progeny had damaged livers 18% of progeny had damaged livers
Total Herdmate Records 36236 34920 1550 1509
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 13% of herdmates had damaged livers 13% 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