Assessment of the Efficacy of L-Lysine Sulfate vis-à-vis L-Lysine Hydrochloride as Sources of Supplemental Lysine in Broiler Chickens

Figure 1

Live weight change, food intake, serum concentrations of total protein and creatinine, and excreta N in experimental broilers. Based on data obtained during the fasting trial conducted at tandem with the metabolism trial ($n=10$) selected at random from each treatment group. In the line diagrams solid, dashed, and dotted lines, respectively, indicate the control, L-lysine.HCl, and L-lysine sulfate dietary groups.

(a) Live weight change (g) during protein withdrawal

(b) Food intake (g) during metabolism trial (−6 to −1 d) and protein withdrawal (1 to 6 d)

(c) Serum protein (g/L) and creatinine ($\mu$mol/L) prior to and after protein withdrawal

(d) N concentration in excreta (g) during protein withdrawal period