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 (%) 99% (V High) 6.75 86
Liver Fluke (%) 83% (V High) 33.38 7

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 (%) 1084 2466 6% of progeny were TB Reactors 80474 6% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 1083 2465 6% of progeny were TB Reactors 80430 6% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 888 1074 40% of progeny had damaged livers 3836 31% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 888 1074 40% of progeny had damaged livers 3835 31% 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 1084 1083 888 888
Total Progeny Records 2466 2465 1074 1074
Average Progeny Prevalence 6% of progeny were TB Reactors 6% of progeny were TB Reactors 40% of progeny had damaged livers 40% of progeny had damaged livers
Total Herdmate Records 80474 80430 3836 3835
Average Herdmate Prevalence 6% of herdmates were TB reactors 6% of herdmates were TB reactors 31% of herdmates had damaged livers 31% 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