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) 7.75 66
Liver Fluke (%) 75% (High) 32.27 61

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 (%) 334 868 7% of progeny were TB Reactors 34813 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 331 861 7% of progeny were TB Reactors 34624 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 528 855 24% of progeny had damaged livers 3169 20% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 525 849 24% of progeny had damaged livers 3156 20% 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 334 331 528 525
Total Progeny Records 868 861 855 849
Average Progeny Prevalence 7% of progeny were TB Reactors 7% of progeny were TB Reactors 24% of progeny had damaged livers 24% of progeny had damaged livers
Total Herdmate Records 34813 34624 3169 3156
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 20% of herdmates had damaged livers 20% 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