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 (%) 97% (V High) 8.28 53
Liver Fluke (%) 57% (Average) 31.58 54

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 (%) 183 634 4% of progeny were TB Reactors 23436 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 183 634 4% of progeny were TB Reactors 23437 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 207 301 20% of progeny had damaged livers 1612 18% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 206 300 20% of progeny had damaged livers 1600 18% 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 183 183 207 206
Total Progeny Records 634 634 301 300
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 20% of progeny had damaged livers 20% of progeny had damaged livers
Total Herdmate Records 23436 23437 1612 1600
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 18% of herdmates had damaged livers 18% of herdmates had damaged livers
Interpretation Progeny had same prevalance as herdmates Progeny had same prevalance as herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates