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) 7.5 70
Liver Fluke (%) 64% (High) 31.93 81

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 (%) 253 996 3% of progeny were TB Reactors 49607 3% of herdmates were TB reactors Progeny had same prevalance as herdmates
May 2025 TB (%) 249 992 3% of progeny were TB Reactors 48527 2% of herdmates were TB reactors Progeny had higher (worse) prevalance than herdmates
Sep 2025 Liver Fluke (%) 206 267 16% of progeny had damaged livers 1794 14% of herdmates had damaged livers Progeny had higher (worse) prevalance than herdmates
May 2025 Liver Fluke (%) 203 264 16% of progeny had damaged livers 1783 14% 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 253 249 206 203
Total Progeny Records 996 992 267 264
Average Progeny Prevalence 3% of progeny were TB Reactors 3% of progeny were TB Reactors 16% of progeny had damaged livers 16% of progeny had damaged livers
Total Herdmate Records 49607 48527 1794 1783
Average Herdmate Prevalence 3% of herdmates were TB reactors 2% of herdmates were TB reactors 14% of herdmates had damaged livers 14% of herdmates had damaged livers
Interpretation Progeny had same prevalance as herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates Progeny had higher (worse) prevalance than herdmates