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 (%) 93% (V High) 8.25 54
Liver Fluke (%) 42% (Average) 32.92 76

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 (%) 102 217 7% of progeny were TB Reactors 10494 5% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 101 208 7% of progeny were TB Reactors 10202 6% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 55 75 25% of progeny had damaged livers 326 16% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 52 69 28% of progeny had damaged livers 305 17% 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 102 101 55 52
Total Progeny Records 217 208 75 69
Average Progeny Prevalence 7% of progeny were TB Reactors 7% of progeny were TB Reactors 25% of progeny had damaged livers 28% of progeny had damaged livers
Total Herdmate Records 10494 10202 326 305
Average Herdmate Prevalence 5% of herdmates were TB reactors 6% of herdmates were TB reactors 16% of herdmates had damaged livers 17% 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