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 (%) 98% (V High) 8.43 50
Liver Fluke (%) 58% (Average) 31.87 55

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 (%) 275 1267 2% of progeny were TB Reactors 54658 2% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 263 1238 2% of progeny were TB Reactors 52186 2% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 183 236 14% of progeny had damaged livers 1952 13% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 177 230 14% of progeny had damaged livers 1898 13% 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 275 263 183 177
Total Progeny Records 1267 1238 236 230
Average Progeny Prevalence 2% of progeny were TB Reactors 2% of progeny were TB Reactors 14% of progeny had damaged livers 14% of progeny had damaged livers
Total Herdmate Records 54658 52186 1952 1898
Average Herdmate Prevalence 2% of herdmates were TB reactors 2% of herdmates were TB reactors 13% of herdmates had damaged livers 13% 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