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 (%) 97% (V High) 7.95 61
Liver Fluke (%) 65% (High) 31.21 98

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 (%) 272 471 4% of progeny were TB Reactors 37924 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 271 470 4% of progeny were TB Reactors 37777 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 207 230 20% of progeny had damaged livers 1678 19% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 206 229 20% of progeny had damaged livers 1671 19% 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 272 271 207 206
Total Progeny Records 471 470 230 229
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 20% of progeny had damaged livers 20% of progeny had damaged livers
Total Herdmate Records 37924 37777 1678 1671
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 19% of herdmates had damaged livers 19% 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