RESUMEN
O presente estudo teve por objetivo avaliar e comparar a qualidade microbiológica da carne suína in natura comercializada em feiras livres e estabelecimentos comerciais do Rio de Janeiro, bem como, verificar as condições higiênico-sanitárias dos locais de comercialização. Foram coletadas 20 amostras de pernil suíno in natura comercializados em 20 diferentes feiras livres no estado do Rio de Janeiro e 20 amostras de Pernil suíno in natura comercializados, resfriados e adquiridos em 20 estabelecimentos comerciais do Rio de Janeiro. Após obtenção, as amostras foram encaminhadas para o Laboratório de Controle Microbiológico de Alimentos da Universidade Castelo Branco (UCB), para realização das análises microbiológicas. De acordo com os resultados das avaliações higiênico-sanitárias dos locais onde as amostras de pernil suíno in natura foram obtidas, observou-se uma média de 57,60% e 13,64% de não conformidade nas feiras livres e nos estabelecimentos comerciais, respectivamente. A presença de Salmonella sp. foi verificada em 14 (70%) e 17 (85%) amostras de pernil suíno in natura coletadas em feiras livres e estabelecimentos comerciais, respectivamente, estando estas amostras em não conformidade com a legislação vigente, sendo consideradas impróprias para o consumo. A análise dos resultados sugere que a qualidade microbiológica do pernil suíno in natura comercializado em feiras livres e estabelecimentos varejistas não atende às exigências da legislação que regulamenta esse setor.(AU)
The present study aimed to evaluate and compare microbiological quality of pork meat sell in street markets and in commercial establishments in Rio de Janeiro state, the hygienic-sanitary conditions of those places were also evaluated. It were collected 40 samples of fresh pork meat, 20 samples from street market and 20 samples from commercial establishments in Rio de Janeiro State. The samples were transported refrigerated to the Laboratory of Microbiological Control of Food of the Castelo Branco University for analyzing. The results showed an average of 57.60% and 13.64% of nonconformity respectively for the street market and for commercial establishments. The presence of Salmonella sp. was verified in 14 (70%) of the samples collected in the street markets and 17 (85%) for those collected in the commercial establishments, and so were not in compliance with the current legislation and were considered unfit for human consumption. The results suggests that the microbiological quality of pork leg meat marketed in both streets markets or commercial establishments in Rio de Janeiro State are not in compliance with Brazilian applicable laws requirements.(AU)
Asunto(s)
Animales , Higiene Alimentaria , Inspección de Alimentos/métodos , Carne/análisis , Porcinos , Brasil , Técnicas Microbiológicas/métodosRESUMEN
This study aimed to evaluate chromium supplementation on productive, reproductive, and metabolic parameters at lactating Girolando cows subjected to heat stress conditions in a climatic chamber. Thirty-six lactating Girolando cows were subjected to two sequential trials. In trial 1 (thermoneutral environment), the effect of chromium supplementation was evaluated (0 vs. 0.50 mg/kg of dry matter). In trial 2, the cows were fed the same diets, but they were divided into three environmental conditions: heat stress conditions in climatic chamber, fed ad libitum (HS); thermoneutral environment, fed ad libitum (TN); and thermoneutral environment, pair-fed (PF). In thermoneutral conditions, chromium supplementation did not affect productive or metabolic parameters, although supplemented cows had lower viability of oocytes (65.11 ± 0.08% vs. 76.86 ± 0.08%). During heat stress, chromium supplementation lowered plasma glucose levels (61.17 ± 1.90 vs. 67.11 ± 1.90 mg/dL), and increased the insulin:glucose ratio (0.39 ± 0.04 vs. 0.27 ± 0.04). Cows fed the control diet in the HS group had higher vaginal temperature values (39.40 ± 0.10 °C) than the cows in the TN group and PF group (38.89 ± 0.10 °C and 38.85 ± 0.11 °C, respectively). However, supplemented cows heat-stressed maintained the same vaginal temperature as cows in thermoneutral conditions. In conclusion, chromium supplementation improved glucose metabolism and prevented body temperature increases under heat stress conditions.