雛の糖質の代謝に及ぼす亜鉛の影響鶏の亜鉛代謝の研究-6-

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White Leghorn male chicks were fed 4 different kinds of chick starters containing 24, 36, 100 and 200 ppm Zn for 2 or 3 weeks. In the first experiment, chicks were fed ad libitum and effects of dietary Zn level on carbohydrate metabolism were investigated. Glucose utilization and Zn in the liver increased in proportion to the increase of dietary Zn level, but these of the 200 ppm Zn diet group were lower than those of the 100 ppm Zn diet group. Highly significant positive correlation existed between glycogen content and Zn content in the liver (γ=+0.946, P<0.001). In the second experiment, the feed intake of chicks were controlled and each group of chicks took the same amount of nutrients except Zn. Glucose level in blood and glycogen contents of liver and muscle of the second experiment varied in the same way as the first experiment in which chicks were fed ad libitum. In view of the variations of carbohydrate metabolism described above, it can be suggested that effects of dietary Zn are similar to those of insulin, glucose and antidiabetic substances and Zn requirement of chick may be a little higher than the level of N. R .C. recommendation.
社団法人日本畜産学会の論文