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 (%) 66% (High) 9.46 26
Liver Fluke (%) 25% (Low) 31.31 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 (%) 10 19 16% of progeny were TB Reactors 670 14% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 7 12 17% of progeny were TB Reactors 469 13% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 17 27 15% of progeny had damaged livers 172 8% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 15 23 13% of progeny had damaged livers 161 9% 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 10 7 17 15
Total Progeny Records 19 12 27 23
Average Progeny Prevalence 16% of progeny were TB Reactors 17% of progeny were TB Reactors 15% of progeny had damaged livers 13% of progeny had damaged livers
Total Herdmate Records 670 469 172 161
Average Herdmate Prevalence 14% of herdmates were TB reactors 13% of herdmates were TB reactors 8% of herdmates had damaged livers 9% 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