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 (%) 98% (V High) 12.19 1
Liver Fluke (%) 78% (High) 30.9 99

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 (%) 52 82 15% of progeny were TB Reactors 6722 7% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 52 82 15% of progeny were TB Reactors 6722 7% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 10 11 64% of progeny had damaged livers 45 45% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 10 11 64% of progeny had damaged livers 45 45% 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 52 52 10 10
Total Progeny Records 82 82 11 11
Average Progeny Prevalence 15% of progeny were TB Reactors 15% of progeny were TB Reactors 64% of progeny had damaged livers 64% of progeny had damaged livers
Total Herdmate Records 6722 6722 45 45
Average Herdmate Prevalence 7% of herdmates were TB reactors 7% of herdmates were TB reactors 45% of herdmates had damaged livers 45% 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