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) 6.89 84
Liver Fluke (%) 86% (V High) 32.74 33

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 (%) 1047 2142 4% of progeny were TB Reactors 135098 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 1026 2116 4% of progeny were TB Reactors 131742 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 984 1242 21% of progeny had damaged livers 8632 16% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 980 1236 21% of progeny had damaged livers 8565 16% 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 1047 1026 984 980
Total Progeny Records 2142 2116 1242 1236
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 135098 131742 8632 8565
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 16% of herdmates had damaged livers 16% 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