Table 2. Reported dietary mineral recommendations for African elephants (Loxodonta africana).

Mineral	Species	Detail	Daily estimated mineral requirements	Source
Calcium	L. africana	Lactating females intensive tusk growth	60 g 8–9 g	McCullagh (1969) and Dierenfeld (2008)
Sodium	L. africana		9 mg Na kg−1 BW	Holdø, Dudley & McDowell (2002)
Iodine	L. africana		0.03 mg I kg−1 BW	Milewski (2000)

Note:

Estimated mineral requirements for African elephants.