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) 9.11 33
Liver Fluke (%) 59% (Average) 33.15 13

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 (%) 181 696 4% of progeny were TB Reactors 31295 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 176 684 4% of progeny were TB Reactors 30606 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 140 176 11% of progeny had damaged livers 1175 11% of herdmates had damaged livers Progeny had same prevalance as herdmates
May 2025 Liver Fluke (%) 134 170 12% of progeny had damaged livers 1124 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 181 176 140 134
Total Progeny Records 696 684 176 170
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 11% of progeny had damaged livers 12% of progeny had damaged livers
Total Herdmate Records 31295 30606 1175 1124
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 11% 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 same prevalance as herdmates Progeny had higher (worse) prevalance than herdmates