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) 6.79 85
Liver Fluke (%) 89% (V High) 30.88 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 (%) 1582 4780 4% of progeny were TB Reactors 170285 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 1575 4765 4% of progeny were TB Reactors 169542 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 1582 1958 23% of progeny had damaged livers 10114 20% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 1576 1952 23% of progeny had damaged livers 10054 20% 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 1582 1575 1582 1576
Total Progeny Records 4780 4765 1958 1952
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 23% of progeny had damaged livers 23% of progeny had damaged livers
Total Herdmate Records 170285 169542 10114 10054
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 20% of herdmates had damaged livers 20% 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