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) 9.24 30
Liver Fluke (%) 79% (High) 31.45 96

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 (%) 513 1533 7% of progeny were TB Reactors 68777 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 512 1524 7% of progeny were TB Reactors 68661 4% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 465 632 29% of progeny had damaged livers 3318 24% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 463 630 30% of progeny had damaged livers 3297 24% 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 513 512 465 463
Total Progeny Records 1533 1524 632 630
Average Progeny Prevalence 7% of progeny were TB Reactors 7% of progeny were TB Reactors 29% of progeny had damaged livers 30% of progeny had damaged livers
Total Herdmate Records 68777 68661 3318 3297
Average Herdmate Prevalence 4% of herdmates were TB reactors 4% of herdmates were TB reactors 24% of herdmates had damaged livers 24% 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