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) 7.09 79
Liver Fluke (%) 77% (High) 31.09 99

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 (%) 431 1154 4% of progeny were TB Reactors 48688 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 430 1153 4% of progeny were TB Reactors 48574 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 572 764 21% of progeny had damaged livers 4208 18% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 568 760 21% of progeny had damaged livers 4192 18% 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 431 430 572 568
Total Progeny Records 1154 1153 764 760
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 21% of progeny had damaged livers 21% of progeny had damaged livers
Total Herdmate Records 48688 48574 4208 4192
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 18% of herdmates had damaged livers 18% 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