Table 1. Proximate analyses¹⁾ of basal diets in Korean native steers administered different doses of L-tryptophan intravenous or saline.

	Water (%)	% of dry matter
		Crude protein	Ether extract	Crude ash	TDN
Timothy	7.99 ± 0.01	6.72 ± 0.02	1.09 ± 0.01	6.62 ± 0.02	66.66 ± 0.13
Concentrate	13.28 ± 0.06	12.47 ± 0.04	3.00 ± 0.02	7.19 ± 0.04	69.50 ± 0.20

¹⁾Calculated values in the laboratory.

TDN, total digestible nutrients.