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 (%) 94% (V High) 8.26 54
Liver Fluke (%) 49% (Average) 32.13 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 (%) 178 340 4% of progeny were TB Reactors 27751 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 172 333 4% of progeny were TB Reactors 27017 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 99 128 11% of progeny had damaged livers 1126 11% of herdmates had damaged livers Progeny had same prevalance as herdmates
May 2025 Liver Fluke (%) 97 126 11% of progeny had damaged livers 1112 11% of herdmates had damaged livers Progeny had same prevalance as 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 178 172 99 97
Total Progeny Records 340 333 128 126
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 11% of progeny had damaged livers 11% of progeny had damaged livers
Total Herdmate Records 27751 27017 1126 1112
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 same prevalance as herdmates