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 (%) 95% (V High) 8.24 54
Liver Fluke (%) 53% (Average) 33.08 83

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 (%) 170 321 4% of progeny were TB Reactors 21989 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 161 309 4% of progeny were TB Reactors 21103 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 91 103 17% of progeny had damaged livers 1038 13% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 90 102 18% of progeny had damaged livers 1031 14% 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 170 161 91 90
Total Progeny Records 321 309 103 102
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 17% of progeny had damaged livers 18% of progeny had damaged livers
Total Herdmate Records 21989 21103 1038 1031
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 13% of herdmates had damaged livers 14% 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