Szakáll I, Fekete S, Andrásofszky E, Romvári R, Szita G
Department of Animal Breeding and Nutrition, University of Veterinary Science, Budapest, Hungary.
Acta Vet Hung. 1998;46(2):243-57.
The effect of dietary fat and/or lysine supplementation on the body composition of broiler chickens was studied. Body composition was measured by computed tomography (CT) and direct chemical analysis. Cockerel chicks from a previous experiment (Fekete et al., 1992) were used in this study. Ten chickens from each treatment group were euthanised, deep frozen and subjected to CT. Subsequently the bodies were dissected and ground to obtain homogeneous samples for chemical analysis. Supplementation of the diet with 6 g/kg lysine did not change total body composition but positively influenced the final body weight. In the treatment group receiving 40 g/kg added fat and 3 g/kg feed lysine (F-LYS-I) the higher body weight ran parallel with a higher fat content. The difference between the frozen body weight and final live body weight shows that lysine supplementation increased the water-holding capacity of muscle, which was the best in groups receiving a diet of normal energy content plus high lysine supplementation.
研究了日粮中添加脂肪和/或赖氨酸对肉鸡身体组成的影响。通过计算机断层扫描（CT）和直接化学分析来测定身体组成。本研究使用了来自先前实验（Fekete等人，1992年）的公鸡雏鸡。每个处理组的十只鸡被安乐死，深度冷冻并进行CT扫描。随后将鸡体解剖并研磨以获得用于化学分析的均匀样本。日粮中添加6 g/kg赖氨酸不会改变总体身体组成，但对最终体重有积极影响。在接受40 g/kg添加脂肪和3 g/kg饲料赖氨酸的处理组（F-LYS-I）中，较高的体重与较高的脂肪含量相关。冷冻体重与最终活体体重之间的差异表明，添加赖氨酸提高了肌肉的持水能力，在接受正常能量含量日粮加高赖氨酸添加的组中效果最佳。
