.

Abstract

Liver is the largest gland in the body, which has a great diversity of functions. It is parenchymal and glandular. Chicken livers may undergo several alterations, including bacterial, parasitic, neoplastic, among other. Chicken meat and its byproducts are sources of diseases transmitted to humans. That is why in order to ensure the public health, meat and viscera are considered unfit for consumption. In this research were examined, macroscopically and microscopically, 100 chicken livers, with an average age of 33 days, weight 1,3 to 1,6 kg, that led the loss of the entire carcass, in line B of a slaughterhouse inspection, located in the region of the Triângulo Mineiro. Macroscopically, it was possible to observe a coherence with the data describe by the literature such as liver with increased volume, reddish, greenish, yellowish, whitish spots and friable. Microscopically, the lesions found in most livers were infiltrated with heterophile, followed by neoplastic cells clustered. Thus it was possible to conclude that the etiologic diagnosis in macro and microscopically alterations is compatible with colibacillosis (80%) and leucosis myeloid (20%) respectively.