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Asian-Australas J Anim Sci > Volume 2(1); 1989 > Article
Animal Reproduction and Physiology
Asian-Australasian Journal of Animal Sciences 1989;2(1): 7-16.
DOI: https://doi.org/10.5713/ajas.1989.7    Published online March 1, 1989.
Effects of lysine level and Na+K-Cl ratio on lusine-arginine antagonism, blood pH, blood acid-base parameters and growth performance in broiler chicks
H. W. Kim, I. K. Han, Y. J. Choi
Abstract
To determine the effect of sodium plus potassium to chloride ratio and lysine level on blood pH, blood acid-base parameters, lysine-arginine antagonism and growth performance, four hundred and thirty two chicks of 3 days age were used in a completely randomized 3횞3 factorial experiment. Bariables contained three levels of lysine (0.8, 1.2 and 1.6%) and dietary electrolyte (100, 200 and 300 mEq/kg). Birds fed 200 mEq/kg and electrolyte had the best growth rate and feed efficiency, followed by those fed 300 mEq/kg and 100 mEq/kg electrolyte. It is proposed that high levels of dietary electrolyte may improve the growth of chicks fed diets containing excess lysine by increasing lysine catabolism. High or low levels of lysine and dietary electrolyte resulted in higher mortality than those of optimum level (1.2%) of lysine and 200 mEq/kg of electrolyte balance. When the electrolyte level was increased, the pH, pCO2, base excess, HCO3- and total CO2 of blood plasma were increased. The utilization of nutrients was changed when the electrolyte and lysine were manipulated. Plasma chloride tended to be greater in chicks receiving high chloride diet and was the highest in chicks fed the high lysine diet. Plasma sodium and potassium were unaffected by dietary lysine. Diet containing high lysine decreased the level of arginine and excess dietary electrolyte increased arginine level in plasma. It may be concluded that cation supplementation tended to alleviate the lysine-arginine antagonism but chloride exacerbated. Tibia bone length and ash contents were significantly affected by electrolyte balance and lysine level.
Keywords: Lysine; Electrolyte Balance; Growth Performance; Lysine-Arginine Antagonism


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