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) 7.73 66
Liver Fluke (%) 74% (High) 33.17 12

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 (%) 1196 2914 7% of progeny were TB Reactors 94290 6% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 1196 2914 7% of progeny were TB Reactors 94289 6% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 425 470 55% of progeny had damaged livers 1931 45% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 426 471 55% of progeny had damaged livers 1935 46% 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 1196 1196 425 426
Total Progeny Records 2914 2914 470 471
Average Progeny Prevalence 7% of progeny were TB Reactors 7% of progeny were TB Reactors 55% of progeny had damaged livers 55% of progeny had damaged livers
Total Herdmate Records 94290 94289 1931 1935
Average Herdmate Prevalence 6% of herdmates were TB reactors 6% of herdmates were TB reactors 45% of herdmates had damaged livers 46% 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