Giurov B, Vodas K
Vet Med Nauki. 1987;24(5):33-7.
The possibility was checked to infect young birds with fowl typhoid through feeding them with S. gallinarum--contaminated forage. The three test groups of birds were kept on the floor of one and same premise, and a fourth group was kept separately in isolation. The feed offered to the first and second test group was contaminated at the rate of 5.10(8) and 1.2.10(8) microbial cells, respectively. With the first group, where feed contamination was at the rate of 6.10(6) S. gallinarum cells per bird, mortality rate ran as high as 61 per cent, 53 per cent of the total number of birds dying of typhoid septicaemia. With the second group, where feed contamination was 1.2.10(6) S. gallinarum cells per bird the total rate of mortality was 34 per cent, 32 per cent of the birds dying of typhoid septicaemia. With the third group, exposed to air-borne infection and offered Salmonella-free feed only, 8 per cent of the birds died of typhoid. It was found that the manifestation and the intensity of the epizootic process were in direct dependence on the microbial number, and that air played a part in transmitting S. gallinarum to young birds raised on the floor.
通过给幼鸟喂食被鸡伤寒沙门氏菌污染的饲料来检查其感染禽伤寒的可能性。三组试验鸟饲养在同一房舍的地面上，第四组单独隔离饲养。提供给第一组和第二组试验鸟的饲料分别被5×10⁸和1.2×10⁸个微生物细胞污染。在第一组中，每只鸟的饲料污染量为6×10⁶个鸡伤寒沙门氏菌细胞，死亡率高达61%，死亡总数的53%死于伤寒败血症。在第二组中，每只鸟的饲料污染量为1.2×10⁶个鸡伤寒沙门氏菌细胞，总死亡率为34%，32%的鸟死于伤寒败血症。在第三组中，仅暴露于空气传播感染且只提供无沙门氏菌饲料，8%的鸟死于伤寒。结果发现， epizootic过程的表现和强度直接取决于微生物数量，并且空气在将鸡伤寒沙门氏菌传播给地面饲养的幼鸟中起到了作用。 （注：epizootic这个词在医学专业语境下可能有特定含义，这里直接保留英文未翻译，因为不太明确其准确的中文对应，可能需要结合更专业的医学知识来准确翻译。）
