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) 8.43 50
Liver Fluke (%) 53% (Average) 32.42 50

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 (%) 176 622 3% of progeny were TB Reactors 34876 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 164 577 3% of progeny were TB Reactors 32878 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 107 137 7% of progeny had damaged livers 1427 6% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 101 132 8% of progeny had damaged livers 1346 6% 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 176 164 107 101
Total Progeny Records 622 577 137 132
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 7% of progeny had damaged livers 8% of progeny had damaged livers
Total Herdmate Records 34876 32878 1427 1346
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 6% of herdmates had damaged livers 6% of herdmates had damaged livers
Interpretation Progeny had same prevalance as herdmates Progeny had same prevalance as herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates