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) 7.76 65
Liver Fluke (%) 60% (High) 33.09 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 (%) 254 974 2% of progeny were TB Reactors 38940 3% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 247 959 2% of progeny were TB Reactors 37981 3% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 168 235 12% of progeny had damaged livers 2028 7% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 160 228 12% of progeny had damaged livers 1966 7% 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 254 247 168 160
Total Progeny Records 974 959 235 228
Average Progeny Prevalence 2% of progeny were TB Reactors 2% of progeny were TB Reactors 12% of progeny had damaged livers 12% of progeny had damaged livers
Total Herdmate Records 38940 37981 2028 1966
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 7% of herdmates had damaged livers 7% 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