Heres L, Urlings H A P, Wagenaar J A, de Jong M C M
Institute for Animal Science and Health, ID-Lelystad, Department of Infectious Diseases and Food Chain Quality, The Netherlands.
Epidemiol Infect. 2004 Jan;132(1):107-16. doi: 10.1017/s0950268803001213.
In the light of food safety and the control of Salmonella at chicken farms, fermented liquid feed (FLF) was studied. This moistened feed reduced the susceptibility of chickens for Salmonella. To assess the effect of the fermented feed on the transmission of Salmonella between chickens, a transmission experiment was performed. Salmonella shedding was followed within groups of two susceptible chickens together with two previously inoculated chickens. The between-chicken transmission was quantified by calculating a reproduction ratio (R0) and a transmission rate parameter (beta). R0 and beta in the FLF-treated groups were reduced, but a typical infectious chicken fed with FLF, could on average still infect more than one new infectious case. FLF can therefore reduce the transmission of Salmonella in chicken flocks, but it will not prevent the occurrence of major outbreaks.
鉴于食品安全以及养鸡场沙门氏菌的控制问题，对发酵液体饲料（FLF）进行了研究。这种湿润的饲料降低了鸡对沙门氏菌的易感性。为评估发酵饲料对沙门氏菌在鸡之间传播的影响，进行了一项传播实验。在两组易感鸡以及两只先前接种过的鸡组成的群体中跟踪沙门氏菌的排泄情况。通过计算繁殖率（R0）和传播率参数（β）对鸡之间的传播进行量化。FLF处理组中的R0和β有所降低，但喂食FLF的典型感染鸡平均仍可感染超过一例新的感染病例。因此，FLF可以减少鸡群中沙门氏菌的传播，但无法防止重大疫情的发生。
