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) 6.88 84
Liver Fluke (%) 65% (High) 32.62 40

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 (%) 292 708 4% of progeny were TB Reactors 42089 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 280 677 4% of progeny were TB Reactors 40170 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 264 385 14% of progeny had damaged livers 3409 9% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 256 376 14% of progeny had damaged livers 3354 9% 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 292 280 264 256
Total Progeny Records 708 677 385 376
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 14% of progeny had damaged livers 14% of progeny had damaged livers
Total Herdmate Records 42089 40170 3409 3354
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 9% of herdmates had damaged livers 9% of herdmates had damaged livers
Interpretation Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates