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 (%) 96% (V High) 8.4 50
Liver Fluke (%) 53% (Average) 31.75 59

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 (%) 139 411 4% of progeny were TB Reactors 24727 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 137 408 4% of progeny were TB Reactors 24352 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 124 147 10% of progeny had damaged livers 1095 9% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 121 145 10% of progeny had damaged livers 1064 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 139 137 124 121
Total Progeny Records 411 408 147 145
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 10% of progeny had damaged livers 10% of progeny had damaged livers
Total Herdmate Records 24727 24352 1095 1064
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 9% of herdmates had damaged livers 9% 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