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 (%) 99% (V High) 7.57 69
Liver Fluke (%) 92% (V High) 32.18 67

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 (%) 1706 7297 6% of progeny were TB Reactors 131763 5% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 1706 7297 6% of progeny were TB Reactors 131762 5% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 1078 1435 53% of progeny had damaged livers 4956 38% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 1077 1434 53% of progeny had damaged livers 4951 38% 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 1706 1706 1078 1077
Total Progeny Records 7297 7297 1435 1434
Average Progeny Prevalence 6% of progeny were TB Reactors 6% of progeny were TB Reactors 53% of progeny had damaged livers 53% of progeny had damaged livers
Total Herdmate Records 131763 131762 4956 4951
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 38% of herdmates had damaged livers 38% 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