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) 8.39 50
Liver Fluke (%) 73% (High) 34.1 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 (%) 460 1166 5% of progeny were TB Reactors 61537 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 459 1165 5% of progeny were TB Reactors 61405 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 494 574 28% of progeny had damaged livers 4034 21% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 490 570 28% of progeny had damaged livers 4013 21% 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 460 459 494 490
Total Progeny Records 1166 1165 574 570
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 28% of progeny had damaged livers 28% of progeny had damaged livers
Total Herdmate Records 61537 61405 4034 4013
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 21% of herdmates had damaged livers 21% 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