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) 7.96 61
Liver Fluke (%) 70% (High) 32.5 48

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 (%) 437 1220 6% of progeny were TB Reactors 36140 6% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 437 1220 6% of progeny were TB Reactors 36140 6% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 221 304 41% of progeny had damaged livers 997 33% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 220 303 41% of progeny had damaged livers 994 33% 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 437 437 221 220
Total Progeny Records 1220 1220 304 303
Average Progeny Prevalence 6% of progeny were TB Reactors 6% of progeny were TB Reactors 41% of progeny had damaged livers 41% of progeny had damaged livers
Total Herdmate Records 36140 36140 997 994
Average Herdmate Prevalence 6% of herdmates were TB reactors 6% of herdmates were TB reactors 33% of herdmates had damaged livers 33% 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