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) 9.91 19
Liver Fluke (%) 65% (High) 31.78 89

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 (%) 442 1553 4% of progeny were TB Reactors 67255 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
May 2025 TB (%) 403 1429 4% of progeny were TB Reactors 61850 3% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 250 390 8% of progeny had damaged livers 3816 7% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 238 377 8% of progeny had damaged livers 3662 7% 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 442 403 250 238
Total Progeny Records 1553 1429 390 377
Average Progeny Prevalence 4% of progeny were TB Reactors 4% of progeny were TB Reactors 8% of progeny had damaged livers 8% of progeny had damaged livers
Total Herdmate Records 67255 61850 3816 3662
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 7% of herdmates had damaged livers 7% 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