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) 8.83 40
Liver Fluke (%) 82% (V High) 32.37 56

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 (%) 989 2289 6% of progeny were TB Reactors 114135 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 979 2243 6% of progeny were TB Reactors 112707 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 1034 1325 18% of progeny had damaged livers 8505 16% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 1025 1316 18% of progeny had damaged livers 8447 16% 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 989 979 1034 1025
Total Progeny Records 2289 2243 1325 1316
Average Progeny Prevalence 6% of progeny were TB Reactors 6% of progeny were TB Reactors 18% of progeny had damaged livers 18% of progeny had damaged livers
Total Herdmate Records 114135 112707 8505 8447
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 16% of herdmates had damaged livers 16% 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