Table 1.

ME and SID lysine values of individual ingredients used in experiments 1 to 6

	Corn	Soybean meal	Wheat bran	Soybean oil
Metabolizable energy1, Mcal/kg	3.39	3.59	2.18	8.40
Standardized ileal digestible lysine2, %	0.18	2.39	0.38	-

¹The metabolizable energy content of corn, soybean meal and wheat bran were determined previously in our laboratory (data not published). Metabolizable energy of soybean oil (calculated as 96% of DE) was obtained from Feeding Standard of Swine [2].

²Standardized ileal digestible lysine was determined previously using pigs surgically equipped with a T-cannula in the distal ileum. The basal ileal endogenous losses were measured by feeding a nitrogen-free diet (data not published).