Distribution of the lambing intervals (LI, in days) by year of slaughter and by breed type of the ewe (dairy breeds or meat breeds). The LI is shown in the range of 100-530 days in the form of a boxplot. Individual identification and registration of small ruminants was introduced in January 2020. Analyses performed on this data may still show biases. The number of observations per year and by breed type can be found in the .csv.