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) 7.6 68
Liver Fluke (%) 77% (High) 32.26 62

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 (%) 637 1297 5% of progeny were TB Reactors 75568 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 636 1296 5% of progeny were TB Reactors 75454 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 456 566 27% of progeny had damaged livers 3112 24% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 456 566 27% of progeny had damaged livers 3107 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 637 636 456 456
Total Progeny Records 1297 1296 566 566
Average Progeny Prevalence 5% of progeny were TB Reactors 5% of progeny were TB Reactors 27% of progeny had damaged livers 27% of progeny had damaged livers
Total Herdmate Records 75568 75454 3112 3107
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 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