Table 1.

Maternal Behavior postpartum Days 2 and 3

Maternal Behavior	Day 2			Day 3
	WT	CRF2 KO	p value	WT	CRF2 KO	p value
On-nest	5.8±1.4	4.3±0.7	p = 0.509	6.3±2.0	3.8±0.6 #	p = 0.536
Off-nest	6.1±1.9	8.4±1.5	p = 0.335	10.8±3.6	10.5±2.5 #	p = 0.782
Nursing	47.4±2.4	45.9±1.6	p = 0.619	42.5±3.7	45.5±2.6	p = 0.508
Nest building	1.6±0.6	2.9±0.7 #	p = 0.134	1.5±0.5	2.4±0.8 #	p = 0.510
Pup licking	4.9±0.7	6.1±0.7	p = 0.272	4.1±0.6	4.6±0.7	p = 0.604
Self-grooming	4.3±0.6	3.9±0.6	p = 0.641	3.8±0.6	3.6±0.6 #	p = 0.807
Eating/drinking	3.0±0.7	4.1±1.1 #	p = 0.986	4.0±1.3	2.8±0.6 #	p = 0.944

Mean (±SEM) bouts of maternal behavior (recorded every 30 seconds) performed in lactating WT (n =18) or CRF2 KO (n =18) mice on postpartum Days 2 and 3. No treatments were performed. No values differed significantly between WT or CRF2 KO mice on either postpartum Day 2 or 3.

^#data non-normal, analyzed with the Kruskal-Wallis One Way Analysis of Variance on Ranks