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) 7.95 61
Liver Fluke (%) 91% (V High) 30.84 99

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 (%) 1764 5564 5% of progeny were TB Reactors 208969 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 1735 5530 5% of progeny were TB Reactors 204838 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 2137 2988 14% of progeny had damaged livers 18703 13% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 2115 2963 14% of progeny had damaged livers 18585 13% 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 1764 1735 2137 2115
Total Progeny Records 5564 5530 2988 2963
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 14% of progeny had damaged livers 14% of progeny had damaged livers
Total Herdmate Records 208969 204838 18703 18585
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 13% of herdmates had damaged livers 13% 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