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) 8.02 59
Liver Fluke (%) 65% (High) 33.14 86

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 (%) 490 1276 3% of progeny were TB Reactors 78182 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 472 1218 3% of progeny were TB Reactors 75236 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
Sep 2025 Liver Fluke (%) 281 375 13% of progeny had damaged livers 3918 8% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 274 367 13% of progeny had damaged livers 3862 8% 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 490 472 281 274
Total Progeny Records 1276 1218 375 367
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 13% of progeny had damaged livers 13% of progeny had damaged livers
Total Herdmate Records 78182 75236 3918 3862
Average Herdmate Prevalence 3% of herdmates were TB reactors 3% of herdmates were TB reactors 8% of herdmates had damaged livers 8% 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