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) 5.74 96
Liver Fluke (%) 89% (V High) 30.65 100

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 (%) 1540 4088 4% of progeny were TB Reactors 167412 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 1536 4083 4% of progeny were TB Reactors 166839 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 1623 1954 25% of progeny had damaged livers 10206 24% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 1621 1952 25% of progeny had damaged livers 10201 24% 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 1540 1536 1623 1621
Total Progeny Records 4088 4083 1954 1952
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 25% of progeny had damaged livers 25% of progeny had damaged livers
Total Herdmate Records 167412 166839 10206 10201
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 24% of herdmates had damaged livers 24% 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