Padron M
Departamento de Produccion Animal: Aves, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico.
Avian Dis. 1990 Jan-Mar;34(1):221-3.
A Salmonella typhimurium outbreak in 1-to-2-week-old broiler flocks in Mexico is reported. Clinical signs were growth retardation, blindness, twisted necks, and lameness. Gross lesions consisted of hypopyon, panophthalmitis, hepatomegaly with necrotic foci, enlarged spleen, pericarditis, coagulated and unabsorbed yolks, and purulent arthritis. Mortality and cull rates in different flocks ranged from 1.7% to 10.6% during the first two weeks of age. All internal organs, eyes, and hock joints of diseased chickens that were cultured were Salmonella-positive. The bacteria were also isolated from the breeder source flock. Disease was thought to be transmitted through eggs at hatch.
据报道，墨西哥1至2周龄的肉鸡群中爆发了鼠伤寒沙门氏菌疫情。临床症状包括生长发育迟缓、失明、扭颈和跛行。肉眼可见的病变包括眼前房积脓、全眼球炎、肝脏肿大并伴有坏死灶、脾脏肿大、心包炎、凝固未吸收的卵黄以及化脓性关节炎。在不同鸡群中，1至2周龄期间的死亡率和淘汰率在1.7%至10.6%之间。对患病鸡的所有内脏器官、眼睛和跗关节进行培养，结果均显示沙门氏菌呈阳性。该细菌也从种鸡群中分离出来。据认为，疾病是在孵化时通过鸡蛋传播的。
