Table 4.

Energetic efficiency of gravid uterus growth as a function of tissue heat production (kcal/d)

Days pregnant	Energy accreted1	Heat production2	Efficiency, %
137	86	327	21
180	215	507	30
226	503	1,164	30
250	745	2,048	27

¹ Ferrell et al. (1976).

² Reynolds et al. (1986).