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 (%) 98% (V High) 6.93 83
Liver Fluke (%) 75% (High) 30.68 100

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 (%) 498 1434 4% of progeny were TB Reactors 56603 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 496 1431 4% of progeny were TB Reactors 56251 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 439 568 21% of progeny had damaged livers 3391 19% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 436 565 21% of progeny had damaged livers 3364 19% 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 498 496 439 436
Total Progeny Records 1434 1431 568 565
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 21% of progeny had damaged livers 21% of progeny had damaged livers
Total Herdmate Records 56603 56251 3391 3364
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 19% of herdmates had damaged livers 19% of herdmates had damaged livers
Interpretation Progeny had same prevalance as herdmates Progeny had same prevalance as herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates