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 (%) 94% (V High) 7.28 75
Liver Fluke (%) 47% (Average) 32.64 39

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 (%) 114 303 2% of progeny were TB Reactors 25141 3% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 105 281 2% of progeny were TB Reactors 23166 2% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 60 77 13% of progeny had damaged livers 805 11% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 60 77 13% of progeny had damaged livers 801 11% 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 114 105 60 60
Total Progeny Records 303 281 77 77
Average Progeny Prevalence 2% of progeny were TB Reactors 2% of progeny were TB Reactors 13% of progeny had damaged livers 13% of progeny had damaged livers
Total Herdmate Records 25141 23166 805 801
Average Herdmate Prevalence 3% of herdmates were TB reactors 2% of herdmates were TB reactors 11% of herdmates had damaged livers 11% of herdmates had damaged livers
Interpretation Progeny had lower (better) prevalance than herdmates Progeny had same prevalance as herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates