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 (%) 94% (V High) 4.63 99
Liver Fluke (%) 55% (Average) 33.11 16

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 (%) 132 263 3% of progeny were TB Reactors 14842 5% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 128 259 3% of progeny were TB Reactors 14569 5% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 118 156 25% of progeny had damaged livers 1172 15% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 115 152 26% of progeny had damaged livers 1162 15% 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 132 128 118 115
Total Progeny Records 263 259 156 152
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 25% of progeny had damaged livers 26% of progeny had damaged livers
Total Herdmate Records 14842 14569 1172 1162
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 15% of herdmates had damaged livers 15% 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