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 (%) 95% (V High) 9.24 30
Liver Fluke (%) 44% (Average) 31.56 94

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 (%) 148 365 5% of progeny were TB Reactors 25685 2% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 143 360 5% of progeny were TB Reactors 24747 2% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 99 167 17% of progeny had damaged livers 1303 12% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 93 160 17% of progeny had damaged livers 1237 11% 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 148 143 99 93
Total Progeny Records 365 360 167 160
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 17% of progeny had damaged livers 17% of progeny had damaged livers
Total Herdmate Records 25685 24747 1303 1237
Average Herdmate Prevalence 2% of herdmates were TB reactors 2% of herdmates were TB reactors 12% of herdmates had damaged livers 11% 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