Organisation of recording and control of data used in France to evaluate calving ease and birth weight in dairy and beef cattle

摘要

In France, Ease of Birth and Ease of Calving are evaluated by using the birth weight (beef cattle) and calving conditions (dairy cattle) recorded by the breeders through the identification registration. This article describes the performance recordingorganisation and the system of validation. In dairy cattle, recent studies showed that the data on birth conditions were highly improved on a quantitative and qualitative point of view by the implementation of the new system of ID and pedigree registration in 1998. Therefore, an evaluation on birth conditions could be implemented in dairy cattle. In beef cattle, a system of control of data within herds randomly chosen each year, was implemented in 1996. A new system of control is starting at national level, with the analysis of different indicators of the distribution of weights within herd.