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) 6.54 88
Liver Fluke (%) 59% (Average) 31.27 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 (%) 503 1303 2% of progeny were TB Reactors 73275 3% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
May 2025 TB (%) 480 1253 2% of progeny were TB Reactors 70033 3% of herdmates were TB reactors Progeny had lower (better) prevalance than herdmates
Sep 2025 Liver Fluke (%) 239 319 8% of progeny had damaged livers 3360 8% of herdmates had damaged livers Progeny had same prevalance as herdmates
May 2025 Liver Fluke (%) 233 312 7% of progeny had damaged livers 3325 8% of herdmates had damaged livers Progeny had lower (better) 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 503 480 239 233
Total Progeny Records 1303 1253 319 312
Average Progeny Prevalence 2% of progeny were TB Reactors 2% of progeny were TB Reactors 8% of progeny had damaged livers 7% of progeny had damaged livers
Total Herdmate Records 73275 70033 3360 3325
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 8% of herdmates had damaged livers 8% of herdmates had damaged livers
Interpretation Progeny had lower (better) prevalance than herdmates Progeny had lower (better) prevalance than herdmates Progeny had same prevalance as herdmates Progeny had lower (better) prevalance than herdmates