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) 6.48 89
Liver Fluke (%) 92% (V High) 31.67 92

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 (%) 1658 4579 5% of progeny were TB Reactors 175351 5% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 1650 4570 5% of progeny were TB Reactors 174292 5% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 1942 2360 28% of progeny had damaged livers 11516 25% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 1938 2356 28% of progeny had damaged livers 11491 25% 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 1658 1650 1942 1938
Total Progeny Records 4579 4570 2360 2356
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 28% of progeny had damaged livers 28% of progeny had damaged livers
Total Herdmate Records 175351 174292 11516 11491
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 25% of herdmates had damaged livers 25% of herdmates had damaged livers
Interpretation Progeny had same prevalance as herdmates Progeny had same prevalance as herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates