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) 6.61 88
Liver Fluke (%) 75% (High) 34.69 0

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 (%) 427 1288 4% of progeny were TB Reactors 59047 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 425 1285 4% of progeny were TB Reactors 58783 4% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 540 696 19% of progeny had damaged livers 4301 12% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 539 693 19% of progeny had damaged livers 4294 12% 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 427 425 540 539
Total Progeny Records 1288 1285 696 693
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 19% of progeny had damaged livers 19% of progeny had damaged livers
Total Herdmate Records 59047 58783 4301 4294
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 12% of herdmates had damaged livers 12% 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