Silva E N, Snoeyenbos G H, Weinack O M, Smyser C F
Avian Dis. 1981 Jan-Mar;25(1):68-73.
A native intestinal microflora of chickens that is protective against paratyphoid salmonellae appeared to be partially protective against Salmonella gallinarum and abbreviated the excretion time of S. gallinarum in White Leghorn chicks. Treated birds had a lower incidence of systemic infection measured by liver and spleen culture, and fewer birds developed infection in the intestinal tract. Most of the chickens positive by cloacal swabs excreted S. gallinarum throughout the test period. The low level of protection provided by competitive exclusion suggested that the practice would not prove useful in the practical control of fowl typhoid.
对鸡副伤寒沙门氏菌具有保护作用的鸡源肠道微生物群似乎对鸡伤寒沙门氏菌也有部分保护作用，并缩短了白来航鸡雏鸡体内鸡伤寒沙门氏菌的排泄时间。通过肝脏和脾脏培养测定，经处理的鸡全身感染的发生率较低，肠道发生感染的鸡也较少。在整个试验期，大多数泄殖腔拭子检测呈阳性的鸡都排泄鸡伤寒沙门氏菌。竞争排斥提供的低水平保护表明，这种做法在鸡伤寒的实际防控中可能并无用处。
