Southern L L, Baker D H
Poult Sci. 1983 Feb;62(2):401-4. doi: 10.3382/ps.0620401.
An experiment was conducted with young chicks to investigate the effect of duodenal coccidiosis caused by Eimeria acervulina infection on the interrelationship between dietary copper (Cu) and zinc (Zn). A corn-soybean meal diet (devoid of Zn fortification) was supplemented with Zn (50 mg/kg) or Cu (250 mg/kg), or both; these diets were fed to control or coccidiosis-infected chicks. The coccidial infection depressed rate and efficiency of weight gain. Excess dietary Cu had no effect on performance of control or infected chicks. Zinc supplementation did not affect performance of control chicks, but it improved both rate and efficiency of weight gain in E. acervulina-infected chicks. Liver Zn concentration was decreased by coccidiosis, increased by Zn supplementation, but unaffected by excess dietary Cu. Liver Cu concentration was increased by excess dietary Cu and by coccidiosis but decreased by Zn supplementation of the diet. These data indicate that coccidiosis impaired Zn utilization and precipitated Zn deficiency in the chick.
用雏鸡进行了一项实验，以研究堆型艾美耳球虫感染引起的十二指肠球虫病对日粮铜（Cu）和锌（Zn）之间相互关系的影响。一种玉米 - 豆粕日粮（未强化锌）分别添加锌（50毫克/千克）或铜（250毫克/千克），或两者都添加；这些日粮喂给对照或感染球虫病的雏鸡。球虫感染降低了体重增加的速率和效率。日粮中过量的铜对对照或感染雏鸡的生长性能没有影响。补充锌对对照雏鸡的生长性能没有影响，但提高了感染堆型艾美耳球虫雏鸡的体重增加速率和效率。球虫病使肝脏锌浓度降低，补充锌使其升高，但日粮中过量的铜对其没有影响。日粮中过量的铜和球虫病使肝脏铜浓度升高，但日粮中补充锌使其降低。这些数据表明，球虫病损害了雏鸡对锌的利用并导致锌缺乏。
