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) 8.57 47
Liver Fluke (%) 89% (V High) 33.6 3

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 (%) 1581 7673 4% of progeny were TB Reactors 207529 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 1485 7325 4% of progeny were TB Reactors 195069 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 1402 2283 12% of progeny had damaged livers 18331 8% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 1367 2240 12% of progeny had damaged livers 18067 8% 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 1581 1485 1402 1367
Total Progeny Records 7673 7325 2283 2240
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 12% of progeny had damaged livers 12% of progeny had damaged livers
Total Herdmate Records 207529 195069 18331 18067
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 8% of herdmates had damaged livers 8% 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