Abu-Ruwaida A S, Husseini M, Banat I M
UAE Municipalities, Dubai.
Microbios. 1995;83(334):59-69.
A series of experiments was carried out to investigate the efficacy of the competitive exclusion technique in the control of Salmonella in broiler chicks. Anaerobic overnight culture obtained using 10(-3) g ml-1 caecal material in VL-broth medium provided total exclusion of a moderate S. enteritidis challenge (1.2 x 10(2) cells/chick). Increasing the challenge level resulted in less protection, but significant protection occurred at an excessive S. enteritidis challenge level of 1.5 x 10(6) cells/chick. The effectiveness of protection using both moderate and excessive challenges was monitored in newly hatched chicks until they were 22 days old. An improvement in growth performance in terms of higher body weight, feed consumption and feed conversion, in addition to lower mortality, was observed. The use of other control measures such as antimicrobial feed additives or lactose sugar (1.5% w/v) in the drinking water in combination with the competitive microflora treatment resulted in a better overall protection and performance.
进行了一系列实验，以研究竞争排斥技术在控制肉鸡沙门氏菌方面的效果。使用10(-3)克/毫升盲肠内容物在VL肉汤培养基中进行厌氧过夜培养，可完全排除中等程度的肠炎沙门氏菌攻击（每只鸡1.2×10(2)个细胞）。增加攻击水平会导致保护作用减弱，但在每只鸡1.5×10(6)个细胞的过高肠炎沙门氏菌攻击水平下仍有显著保护作用。在新孵出的雏鸡中监测了使用中等和过高攻击水平时的保护效果，直至它们22日龄。观察到在体重、采食量和饲料转化率方面生长性能有所改善，同时死亡率降低。将其他控制措施，如抗菌饲料添加剂或饮用水中的乳糖糖（1.5% w/v）与竞争性微生物群处理相结合，可带来更好的整体保护和性能。
