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) 7.39 73
Liver Fluke (%) 55% (Average) 32.4 54

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 (%) 245 1130 2% of progeny were TB Reactors 55127 2% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 224 1035 2% of progeny were TB Reactors 51578 2% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 111 176 17% of progeny had damaged livers 1844 10% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 108 173 17% of progeny had damaged livers 1829 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 245 224 111 108
Total Progeny Records 1130 1035 176 173
Average Progeny Prevalence 2% of progeny were TB Reactors 2% of progeny were TB Reactors 17% of progeny had damaged livers 17% of progeny had damaged livers
Total Herdmate Records 55127 51578 1844 1829
Average Herdmate Prevalence 2% of herdmates were TB reactors 2% 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 same prevalance as herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates