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 (%) 99% (V High) 8.07 59
Liver Fluke (%) 73% (High) 31.52 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 (%) 544 3943 2% of progeny were TB Reactors 98274 2% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 521 3814 2% of progeny were TB Reactors 93430 2% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 446 708 15% of progeny had damaged livers 4282 13% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 432 682 14% of progeny had damaged livers 4192 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 544 521 446 432
Total Progeny Records 3943 3814 708 682
Average Progeny Prevalence 2% of progeny were TB Reactors 2% of progeny were TB Reactors 15% of progeny had damaged livers 14% of progeny had damaged livers
Total Herdmate Records 98274 93430 4282 4192
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