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 (%) 98% (V High) 7.87 62
Liver Fluke (%) 50% (Average) 32.32 58

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 (%) 151 837 3% of progeny were TB Reactors 27043 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 151 837 3% of progeny were TB Reactors 27046 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 24 27 37% of progeny had damaged livers 156 35% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 24 27 37% of progeny had damaged livers 156 35% 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 151 151 24 24
Total Progeny Records 837 837 27 27
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 37% of progeny had damaged livers 37% of progeny had damaged livers
Total Herdmate Records 27043 27046 156 156
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 35% of herdmates had damaged livers 35% 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