Ose E E, Wellenreiter R H, Tonkinson L V
Poult Sci. 1979 Jan;58(1):42-9. doi: 10.3382/ps.0580042.
Two experiments are reported in which the effect of tylosin upon the development of Mycoplasma gallisepticum (MG) infection in replacement layers was monitored by serological and cultural methods. Concentrations of tylosin tested included 0, 22, 38.5, and 55 ppm. Egg production and feed consumption data were collected for one year. Tylosin slowed the rate of spread of MG infection as measured by serological and cultural methods. The effect of tylosin on the spread of MG infection was dose related. Hen day egg production peaked at 85 to 87% in the mediated groups, while controls peaked at 81 to 84%. The magnitude of tylosin effect on production increased with time to a maximum difference of 10 to 12% at 52 weeks. Feed efficiency was markedly improved by all concentration of tylosin ranging from 5% at peak production to 12 to 18% at 52 weeks. The incidence of shell-less or soft shelled eggs was markedly reduced in the tylosin treated group.
本文报道了两项实验，通过血清学和培养方法监测泰乐菌素对后备蛋鸡感染鸡毒支原体（MG）发展的影响。所测试的泰乐菌素浓度包括0、22、38.5和55 ppm。收集了一年的产蛋量和采食量数据。通过血清学和培养方法测量，泰乐菌素减缓了MG感染的传播速度。泰乐菌素对MG感染传播的影响与剂量相关。在使用泰乐菌素的组中，母鸡日产蛋量峰值为85%至87%，而对照组峰值为81%至84%。泰乐菌素对产蛋量的影响程度随时间增加，在52周时最大差异为10%至12%。所有浓度的泰乐菌素都显著提高了饲料效率，从产蛋高峰期的5%到52周时的12%至18%。在泰乐菌素处理组中，无壳或软壳蛋的发生率显著降低。
