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) 7.29 75
Liver Fluke (%) 62% (High) 31.5 95

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 (%) 261 646 3% of progeny were TB Reactors 42647 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 256 639 3% of progeny were TB Reactors 42173 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 255 336 20% of progeny had damaged livers 2508 15% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 255 336 20% of progeny had damaged livers 2513 15% 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 261 256 255 255
Total Progeny Records 646 639 336 336
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 20% of progeny had damaged livers 20% of progeny had damaged livers
Total Herdmate Records 42647 42173 2508 2513
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 15% of herdmates had damaged livers 15% 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