Table 9.

Nest type

Strain	Sex	Lighting condition	Dome	Bowl or cup	Flat
BALB/c	Male	CWF	52%	48%	0%
BALB/c	Male	bLAD	47%	50%	3%
C3H	Male	CWF	6%	92%	2%
C3H	Male	bLAD	3%	95%	2%
C57BL/6	Male	CWF	6%	91%	3%
C57BL/6	Male	bLAD	0%	100%	0%
BALB/c	Female	CWF	56%	44%	0%
BALB/c	Female	bLAD	38%	62%	0%
C3H	Female	CWF	3%	97%	0%
C3H	Female	bLAD	3%	97%	0%
C57BL/6	Female	CWF	2%	98%	0%
C57BL/6	Female	bLAD	0%	100%	0%

Summary of nest type results of 3 strains of mice (BALB/c, C3H, and B6) and both sexes maintained on IVC system under 2 different lighting conditions (bLAD or CWF).