RESUMO
A total of 172 pigs were randomly allocated to two stunning treatments: carbon dioxide (CO2) and electrical stunning at a commercial abattoir. The Longissimus lumborum (LL) muscle was used to evaluate the effects of stunning methods on pork quality and financial losses of carcasses and viscera condemnation was also determined following by sanitary inspection. There was no effect due to stunning method on quality parameters (Pâ¯>â¯.137) of pHâ¯24, drip or thaw loss, lipid oxidation, myofibrillar fragmentation index, shear force or PSE / DFD meat incidence. The LL muscle of the electrically stunned pigs had a higher L * value (Pâ¯<â¯.05), higher cooking loss (Pâ¯<â¯.001) and lower pHâ¯45 (Pâ¯<â¯.05) compared to those stunned with CO2. CO2 stunned pigs had fewer carcasses condemned due to fractures / lesions (Pâ¯<â¯.05), hepatic and renal congestion (Pâ¯<â¯.05). CO2 stunning can be beneficial from an economic point of view because it has reduced losses through condemnation at the slaughterhouse.
Assuntos
Matadouros/normas , Dióxido de Carbono/farmacologia , Estimulação Elétrica , Carne Vermelha/normas , Matadouros/economia , Animais , Dióxido de Carbono/efeitos adversos , Estimulação Elétrica/efeitos adversos , Fraturas Ósseas/veterinária , Hepatopatias , Músculo Esquelético , SuínosRESUMO
Arthritis implies inflammation of the intra-articular structures and is one of the causes of condemnation in broilers. The disease is associated with infectious agents such as Staphylococcus aureus, which may pose a potential public health risk. This work was conducted with the objective to determine the occurrence of arthritis in broiler chickens, predominantly of bacterial staphylococcal origin and if there is a difference between the degrees of injury regarding the presence of the bacterium and the histological lesion. Sixty samples of chickens diagnosed with arthritis by Federal Inspection Service from commercial slaughterhouse were collected according to their severity (of mild and severe degree) and submitted to bacteriological and histopathological analysis. There was bacterial growth of Staphylococcus aureus in 3.3% of the samples classified as mild degree in 10% of the samples classified as severe grade of lesion (p=0,29). For histopathological evaluation, 16.67% and 70% of the samples presented inflammatory infiltrate in mild and severe degrees, respectively (p=0,0001). Mild degree arthritis is related to non-infectious lesions in their higher prevalence while severe-grade arthritis has infectious causes. The condemnation criteria were efficient since S. aureus could be present regardless of the degree of the lesion diagnosed in arthritis.
Assuntos
Animais , Artrite Infecciosa/microbiologia , Artrite Infecciosa/patologia , Artrite Infecciosa/veterinária , Galinhas/anatomia & histologia , Inspeção Sanitária , Staphylococcus aureus/patogenicidade , MatadourosRESUMO
Arthritis implies inflammation of the intra-articular structures and is one of the causes of condemnation in broilers. The disease is associated with infectious agents such as Staphylococcus aureus, which may pose a potential public health risk. This work was conducted with the objective to determine the occurrence of arthritis in broiler chickens, predominantly of bacterial staphylococcal origin and if there is a difference between the degrees of injury regarding the presence of the bacterium and the histological lesion. Sixty samples of chickens diagnosed with arthritis by Federal Inspection Service from commercial slaughterhouse were collected according to their severity (of mild and severe degree) and submitted to bacteriological and histopathological analysis. There was bacterial growth of Staphylococcus aureus in 3.3% of the samples classified as mild degree in 10% of the samples classified as severe grade of lesion (p=0,29). For histopathological evaluation, 16.67% and 70% of the samples presented inflammatory infiltrate in mild and severe degrees, respectively (p=0,0001). Mild degree arthritis is related to non-infectious lesions in their higher prevalence while severe-grade arthritis has infectious causes. The condemnation criteria were efficient since S. aureus could be present regardless of the degree of the lesion diagnosed in arthritis.(AU)