Fig. 1

Scatterplot of body weight as a function of gestation length (GL). Data based on 2734 liveborn singleton Holstein calves born at the Danish Cattle Research Centre in the period 2001–2022. The size of the dots increases with increasing number of calves. The two lines show the linear relationship between GL and body weight, while the dashed lines mark the 95% confidence limits of the means for a given GL for males and females, respectively