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 (%) 96% (V High) 5.36 97
Liver Fluke (%) 55% (Average) 31.28 98

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 (%) 166 523 1% of progeny were TB Reactors 25230 3% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 160 498 1% of progeny were TB Reactors 24183 3% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 144 188 7% of progeny had damaged livers 1718 6% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 141 184 8% of progeny had damaged livers 1706 6% 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 166 160 144 141
Total Progeny Records 523 498 188 184
Average Progeny Prevalence 1% of progeny were TB Reactors 1% of progeny were TB Reactors 7% of progeny had damaged livers 8% of progeny had damaged livers
Total Herdmate Records 25230 24183 1718 1706
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 6% of herdmates had damaged livers 6% of herdmates had damaged livers
Interpretation Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates