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 (%) 96% (V High) 6.7 87
Liver Fluke (%) 58% (Average) 32.87 27

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 (%) 201 484 3% of progeny were TB Reactors 31361 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 193 474 3% of progeny were TB Reactors 30248 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 147 204 20% of progeny had damaged livers 1443 19% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 145 202 20% of progeny had damaged livers 1423 18% 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 201 193 147 145
Total Progeny Records 484 474 204 202
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 20% of progeny had damaged livers 20% of progeny had damaged livers
Total Herdmate Records 31361 30248 1443 1423
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 19% of herdmates had damaged livers 18% 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