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) 8.09 58
Liver Fluke (%) 77% (High) 32.15 59

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 (%) 822 2368 6% of progeny were TB Reactors 79436 5% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 820 2366 6% of progeny were TB Reactors 79325 5% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 440 494 43% of progeny had damaged livers 2440 35% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 440 494 43% of progeny had damaged livers 2435 35% 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 822 820 440 440
Total Progeny Records 2368 2366 494 494
Average Progeny Prevalence 6% of progeny were TB Reactors 6% of progeny were TB Reactors 43% of progeny had damaged livers 43% of progeny had damaged livers
Total Herdmate Records 79436 79325 2440 2435
Average Herdmate Prevalence 5% of herdmates were TB reactors 5% of herdmates were TB reactors 35% of herdmates had damaged livers 35% 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