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) 7.51 70
Liver Fluke (%) 75% (High) 33.1 16

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 (%) 472 1185 4% of progeny were TB Reactors 54766 5% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 472 1185 4% of progeny were TB Reactors 54737 5% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 266 294 39% of progeny had damaged livers 1494 30% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 265 293 39% of progeny had damaged livers 1492 30% 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 472 472 266 265
Total Progeny Records 1185 1185 294 293
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 39% of progeny had damaged livers 39% of progeny had damaged livers
Total Herdmate Records 54766 54737 1494 1492
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 30% of herdmates had damaged livers 30% of herdmates had damaged livers
Interpretation Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates