Digestible Energy Intake and Digestive Efficiency of Human-Managed North American River Otters (Lontra canadensis)

Table 6

Nutrient digestive efficiency and gastrointestinal transit time for eight captive North American river otters (Lontra canadensis) held at three North Carolina institutions.

Institution	Gross energy digestibility		Crude protein digestibility		Crude fat digestibility		GI transit time
	Median (%)	Range (%)	Median (%)	Range (%)	Median (%)	Range (%)	Median (min)	Range (min)
Institution A (n = 3)	91.4	91.3–92.5	92.1	91.26–92.8	96.5	95.7–97.2	106	98–114
Institution B (n = 3)	87.8	74.8–90.9	87.9	79.9–92.1	91.9	88.2–99.1	145	138–174
Institution C (n = 2)	89.8	88.2–91.4	87.8	85.8–89.8	90.4	89.9–90.8	208	207–209