The transition from gestation to lactation is marked by significant physiological changes for the individual cow in such a way that disease incidence is the highest in early lactation. Similarly, the transition from lactating to dry state is a critical period for the cow. Cows need to adapt to changes in diet, pen, pen mates and the milk synthesis must be stopped during this period. Most of the research at this period has focused on udder health issues and not on other diseases that cows may experience.The objective of this retrospective study was to evaluate the incidence of health events (HE) compatible with recumbency (REC) at dry-off (DO) in Danish dairy cows using descriptive statistics. Data provided by the Danish Cattle Association (DCA) from lactating cows with registered DO dates for 2 years were used for analysis of incidence of REC at DO. DCA maintains a central database for dairy farmers which contains data on HE. To evaluate the incidence of REC in the period ± 7 d to registered DO dates, 2 different proxies were included in the analysis: A) records of the following clinical disease codes compatible with recumbency: atypical milk fever, abomasal dilatation/displacement/ulcer/disorder, ketosis, fatty liver or milk fever (REC-1); and (B) records of the use of products containing calcium intended for Intravenous use to treat diseases compatible with recumbency (REC-2). The average number of events reported compatible with recumbency were 1.56‰ and the average of number of treatments compatible with recumbency were 0.93‰. Disease events at dry off are rarely reported but occur with varying incidence. We conclude that health events compatible with recumbency (REC) happen between 7 d before and 7 d after DO in Danish dairy herds in the period of 2015 and 2016. There was no variation between the years 2015 and 2016. More research is needed to evaluate the risks cows may encounter in the transition from lactation to dry period that can lead to health events. Table 1

Dry-off year	No. of events per 1000 cows dried off		No. of DO dates/lactations
REC-1	REC-2
2015	1.55	0.94	269,162
2016	1.57	0.92	282,424