Avaliação microbiológica de abscessos hepáticos de bovinos abatidos em um abatedouro frigorífico localizado na Região do Semiárido Nordeste II da Bahia

Abstract

The bovine liver is one of the viscera that stands out for being an excellent food. In the routine of inspection is commonly condemned, considering that its metabolic functions makes it susceptible to several types of injuries. Hepatic abscesses are considered the biggest economic problem, both for producers and the refrigeration industry. Thus, the objective was to carry out a microbiological evaluation of hepatic abscesses of cattle slaughtered in a frigorific abactionor in the region of the Northeastern Semi-Arid II of Bahia. A total of 109 samples of bovine hepatic abscesses were collected in a slaughterhouse, with a State Inspection Service (SIE), located in the city of Ribeira do Pombal. Microbiological evaluation of all samples was carried out by means of isolation and identification, being cultured in BHI enrichment broth (Brain Heart Infusion), then in specific culture media and later biochemical tests were carried out to identify microorganisms. Bacteria were identified and cataloged. To obtain the results, a descriptive analysis was performed for the absolute and percentage frequencies. Of the 5,593 cattle slaughtered, 109 livers were convicted of an abscess, indicating a percentage of 1.94%. Of the 109 samples collected, 11 did not obtain the determined cause, since there was no bacterial development. However, 98 samples showed bacterial growth. Of these, 31 were classified as Gram-positive and 67 as Gram-negative. Gram-positive bacteria were identified as Staphylococcus spp. (35.48%), Streptococcus spp., Enterococcus spp. (16.12%), Microccoccus spp. (6.45%) and Peptostreptococcus spp. (6.45%). Gram-negative bacteria were identified as Enterobacter spp. (35.82%), Proteus spp. (17.91%), Klebsiella spp. (13.43%), Escherichia coli (13.43%), Serratia spp. (7.46%), Providencia spp. (5.97%) and Pasteurella sp. (5.97%). Therefore, it can be concluded that there are a variety of bacteria that cause hepatic abscesses in cattle, and that most of them can cause human infections leading to health damage. Thus, the inspection of livers should continue rigorously condemning cases of this pathology.