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) 6.94 83
Liver Fluke (%) 86% (V High) 30.77 100

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 (%) 1244 2817 5% of progeny were TB Reactors 137224 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 1240 2813 5% of progeny were TB Reactors 136869 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 1181 1403 25% of progeny had damaged livers 8238 21% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 1178 1400 25% of progeny had damaged livers 8234 21% 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 1244 1240 1181 1178
Total Progeny Records 2817 2813 1403 1400
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 25% of progeny had damaged livers 25% of progeny had damaged livers
Total Herdmate Records 137224 136869 8238 8234
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 21% of herdmates had damaged livers 21% 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