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) 6.26 92
Liver Fluke (%) 69% (High) 31.7 91

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 (%) 522 989 4% of progeny were TB Reactors 56325 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 518 985 4% of progeny were TB Reactors 55946 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 499 575 21% of progeny had damaged livers 3961 16% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 495 571 21% of progeny had damaged livers 3938 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 522 518 499 495
Total Progeny Records 989 985 575 571
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 56325 55946 3961 3938
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 same prevalance as herdmates Progeny had same prevalance as herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates