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) 4.72 99
Liver Fluke (%) 53% (Average) 30.57 100

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 (%) 132 248 2% of progeny were TB Reactors 17277 4% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 129 245 2% of progeny were TB Reactors 16617 4% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 105 139 14% of progeny had damaged livers 1165 9% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 104 138 14% of progeny had damaged livers 1151 9% 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 132 129 105 104
Total Progeny Records 248 245 139 138
Average Progeny Prevalence 2% of progeny were TB Reactors 2% of progeny were TB Reactors 14% of progeny had damaged livers 14% of progeny had damaged livers
Total Herdmate Records 17277 16617 1165 1151
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 9% of herdmates had damaged livers 9% 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