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Studies on potassium-lysine interrelationships in broiler chicks 1. Effect of potassium-lysine interrelationships on growth performance and nutrient utilizability |
H. Y. Shin, I. K. Han, Y. J. Choi |
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Abstract |
In order to study the effects of dietary potassium and lysine levels on growth performance and nutrient utilizability in broiler chicks, an experiment was conducted in 3 횞 3 factorial arrangement with three levels of dietary potassium (0.3, 0.6 and 1.2%) and three supplemented levels of dietary lysine (0.6, 1.2 and 2.4%). A total number of 360 male broiler chicks was used for 6 weeks. Birds fed optimum lysine (1.2%) diets had the highest body weight gain and feed efficiency, followed by those fed low lysine (0.6%) and high lysine (2.4%) diets (p<0.01). But levels of dietary potassium had no effects on the body weight gain and feed efficiency. Interaction between potassium and lysine was not shown (p>0.05). High level of lysine resulted in higher mortality than that of optimum or low level of lysine (p<0.01). The levels of supplemented lysine affected utilizability of ether extract, total carbohydrate, and nitrogen retention (p<0.01). But supplemented potassium levels did not affect nutrient utilizability and interaction between potassium and lysine was not shown (p>0.05). |
Keywords:
Potassium; Lysine; Interrelationship; Broiler |
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