The effect of antimicrobial treatment on mortality associated with urinary tract disease in mink kits (Neovison vison)

Table 1 Farm mortalities, sampling and necropsy results of MUTD (mink urinary tract disease) during study enrolment

	Average kit mortality before recognition of clinical features^a of MUTD		Average kit mortality after recognition of clinical features^a of MUTD		Fraction of necropsied kits with MUTD^b
	Dates^c	‰ per day	Dates^c	‰ per day	Fraction of necropsied kits with MUTD^b
Farm A	27/6–29/6 2018	0.3	3/7–5/7 2018	0.6	11^d/12
Farm B	23/6–27/6 2020	0.3	1/7–5/7 2020	0.7	10^d/12

Study inclusion criteria: 100% increased kit mortality caused by MUTD (minimum 2/3 of necropsied mink kits diagnosed post mortem with MUTD)
^aFarmer observing elevated mortality of especially male mink kits
^bWhen investigating the cause of elevated mortality in early July
^cThe number of days for calculation of average mortality was doubled from 2018 to 2020 to strengthen the argument of elevated mortality
^dBladder swabs (n = 4) were collected for routine microbiological culture analysis and antimicrobial susceptibility test from mink kits with MUTD not showing visual signs of decomposition

ISSN: 1751-0147