Between-herd variation in resilience and relations to herd performance

Resilient cows are minimally affected in their functioning by infections and other disturbances, recover quickly. Herd management is expected to have an effect on disturbances the resilience of cows, this was investigated study. Two indicators were first recorded individual cows. The herd-year these then estimated corrected for genetic year-season effects. 2 variance lag-1 autocorrelation daily milk yield deviations from lactation curve. Low indicate that a cow does not fluctuate much around her is, thus, subject few or little (resilient). estimates 9,917 classes based records 227,655 primiparous 2,644 herds. related herd performance variables. Large differences (variance autocorrelation) observed between herd-years, indicating traits. Furthermore, with high tended proportion rumen acidosis indication (r = 0.31), SCS 0.19), low fat content −0.18), long calving interval 0.14), survival second −0.13), large size 0.12), lactose −0.12), production 0.10). These correlations support herds resilient. correlation suggests feed may important variance. Herd-year ketosis 0.14) 0.13), but somatic cell score −0.17) −0.12). suggest at level indicates either good poor resilience, thus indicator. However, combination many fluctuations slow recovery. In conclusion, management, particular seems affect resilience.