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) 7.95 61
Liver Fluke (%) 92% (V High) 32.24 63

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 (%) 925 3320 6% of progeny were TB Reactors 94294 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 914 3298 6% of progeny were TB Reactors 93096 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 1852 3208 21% of progeny had damaged livers 12773 16% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 1836 3186 20% of progeny had damaged livers 12696 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 925 914 1852 1836
Total Progeny Records 3320 3298 3208 3186
Average Progeny Prevalence 6% of progeny were TB Reactors 6% of progeny were TB Reactors 21% of progeny had damaged livers 20% of progeny had damaged livers
Total Herdmate Records 94294 93096 12773 12696
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% 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