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 (%) 80% (V High) 11.05 6
Liver Fluke (%) 42% (Average) 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 (%) 18 32 6% of progeny were TB Reactors 2281 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 14 25 8% of progeny were TB Reactors 1450 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 11 13 15% of progeny had damaged livers 341 14% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 9 11 18% of progeny had damaged livers 304 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 18 14 11 9
Total Progeny Records 32 25 13 11
Average Progeny Prevalence 6% of progeny were TB Reactors 8% of progeny were TB Reactors 15% of progeny had damaged livers 18% of progeny had damaged livers
Total Herdmate Records 2281 1450 341 304
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 14% of herdmates had damaged livers 15% 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