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 (%) 94% (V High) 7.99 60
Liver Fluke (%) 49% (Average) 31.57 94

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 (%) 134 294 4% of progeny were TB Reactors 22536 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 131 289 5% of progeny were TB Reactors 22035 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 96 119 18% of progeny had damaged livers 966 13% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 94 117 17% of progeny had damaged livers 954 13% 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 134 131 96 94
Total Progeny Records 294 289 119 117
Average Progeny Prevalence 4% of progeny were TB Reactors 5% of progeny were TB Reactors 18% of progeny had damaged livers 17% of progeny had damaged livers
Total Herdmate Records 22536 22035 966 954
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 13% of herdmates had damaged livers 13% of herdmates had damaged livers
Interpretation Progeny had same prevalance as herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates