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) 7.43 72
Liver Fluke (%) 49% (Average) 32.93 24

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 (%) 107 204 5% of progeny were TB Reactors 11988 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 107 204 5% of progeny were TB Reactors 11989 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 61 68 44% of progeny had damaged livers 518 30% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 61 68 44% of progeny had damaged livers 511 30% 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 107 107 61 61
Total Progeny Records 204 204 68 68
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 44% of progeny had damaged livers 44% of progeny had damaged livers
Total Herdmate Records 11988 11989 518 511
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 30% of herdmates had damaged livers 30% 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