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 (%) 98% (V High) 8.05 59
Liver Fluke (%) 68% (High) 32.14 59

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 (%) 441 1321 3% of progeny were TB Reactors 64730 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 428 1300 4% of progeny were TB Reactors 62866 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 316 481 14% of progeny had damaged livers 4181 10% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 301 463 13% of progeny had damaged livers 4055 10% 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 441 428 316 301
Total Progeny Records 1321 1300 481 463
Average Progeny Prevalence 3% of progeny were TB Reactors 4% of progeny were TB Reactors 14% of progeny had damaged livers 13% of progeny had damaged livers
Total Herdmate Records 64730 62866 4181 4055
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 10% of herdmates had damaged livers 10% of herdmates had damaged livers
Interpretation Progeny had same prevalance as herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates