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 (%) 96% (V High) 6.74 86
Liver Fluke (%) 45% (Average) 32.52 46

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 (%) 140 493 1% of progeny were TB Reactors 33660 2% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 139 491 1% of progeny were TB Reactors 33525 2% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 95 139 24% of progeny had damaged livers 1157 15% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 94 138 24% of progeny had damaged livers 1150 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 140 139 95 94
Total Progeny Records 493 491 139 138
Average Progeny Prevalence 1% of progeny were TB Reactors 1% of progeny were TB Reactors 24% of progeny had damaged livers 24% of progeny had damaged livers
Total Herdmate Records 33660 33525 1157 1150
Average Herdmate Prevalence 2% of herdmates were TB reactors 2% 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