Kirchgessner M, Windisch W, Roth F X
Institut für Ernährungsphysiologie, Technischen Universität München-Weihenstephan, Freising, Germany.
Arch Tierernahr. 1995;48(1-2):63-70. doi: 10.1080/17450399509381828.
In two metabolism trials with growing and finishing pigs the influence of the antibiotic feed additives Avilamycin and Tylosin on the metabolizable energy was investigated at different levels of dietary protein content. In the first experiment (growing pigs) the antibiotics were supplied at levels of 0 mg/kg, 40 mg/kg Avilamycin and 40 mg/kg Tylosin to diets containing 18.5%, 17.5%, 16.5% and 14.0% of crude protein. In the second experiment (finishing pigs) 0 mg/kg antibiotics, 20 mg/kg Avilamycin and 20 mg/kg Tylosin were used in diets containing 16.5% and 14.0% of crude protein. The body weight of the animals averaged 46 kg (growing pigs) and 68 kg (finishing pigs). In growing pigs the supplementation of Tylosin increased the digestibility of dry matter and energy at 1 percentage unit each, while in finishing pigs no effects were observed. Since the urinary energy excretion was not affected by antibiotics, there was only in Tylosin treated growing pigs a slight rise in dietary contents of metabolizable energy by 1.6%. The reduction of the dietary protein content resulted in increased digestibility of dry matter and energy, reduced urinary energy excretions and increased dietary contents of metabolizable energy.
在两项针对生长猪和育肥猪的代谢试验中，研究了抗生素饲料添加剂阿维拉霉素和泰乐菌素在不同日粮蛋白质含量水平下对可代谢能量的影响。在第一个试验（生长猪）中，向粗蛋白含量分别为18.5%、17.5%、16.5%和14.0%的日粮中添加0毫克/千克、40毫克/千克阿维拉霉素和40毫克/千克泰乐菌素。在第二个试验（育肥猪）中，在粗蛋白含量分别为16.5%和14.0%的日粮中使用0毫克/千克抗生素、20毫克/千克阿维拉霉素和20毫克/千克泰乐菌素。动物的平均体重为46千克（生长猪）和68千克（育肥猪）。在生长猪中，添加泰乐菌素使干物质和能量的消化率各提高了1个百分点，而在育肥猪中未观察到影响。由于抗生素对尿能排泄没有影响，仅在使用泰乐菌素处理的生长猪中，日粮可代谢能量含量略有增加，增幅为1.6%。日粮蛋白质含量的降低导致干物质和能量的消化率提高、尿能排泄减少以及日粮可代谢能量含量增加。
