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) 8.41 50
Liver Fluke (%) 58% (Average) 32.41 50

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 (%) 238 503 4% of progeny were TB Reactors 37612 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 237 502 4% of progeny were TB Reactors 37527 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 176 223 16% of progeny had damaged livers 1601 14% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 171 218 16% of progeny had damaged livers 1595 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 238 237 176 171
Total Progeny Records 503 502 223 218
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 16% of progeny had damaged livers 16% of progeny had damaged livers
Total Herdmate Records 37612 37527 1601 1595
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 14% 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