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 (%) 92% (V High) 4.27 100
Liver Fluke (%) 54% (Average) 30.82 100

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 (%) 98 205 8% of progeny were TB Reactors 10522 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 98 205 8% of progeny were TB Reactors 10522 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 105 123 24% of progeny had damaged livers 775 23% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 105 123 24% of progeny had damaged livers 775 23% 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 98 98 105 105
Total Progeny Records 205 205 123 123
Average Progeny Prevalence 8% of progeny were TB Reactors 8% of progeny were TB Reactors 24% of progeny had damaged livers 24% of progeny had damaged livers
Total Herdmate Records 10522 10522 775 775
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 23% of herdmates had damaged livers 23% of herdmates had damaged livers
Interpretation Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates