517 resultados para Resíduo na carcaça


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Pós-graduação em Genética e Melhoramento Animal - FCAV

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Pós-graduação em Engenharia Civil - FEIS

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Pós-graduação em Engenharia Civil - FEIS

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Pós-graduação em Ciência e Tecnologia de Materiais - FC

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Employing the method of least squares and quadratic B-spline polynomials, different statistical models were tested to identify the most appropriate to model the mean trajectories of live weight and carcass yield of Nile tilapia (Oreochromis niloticus). Data of live weight (8,758) and carcass yield (2,042) of tilapias with ages between 106 and 245 days were obtained from 72 families derived from 36 males and 72 females. The sex and tank variables were considered as classificatory and the coefficients of quadratic polynomials B-spline of two to five intervals of the same size were used as covariables. According to most fit criteria used, the models with quadratic B-spline polynomial with five intervals of the same size presented the best adjustments. The increase in number of intervals of B-spline polynomial improved the fit of the polynomials to the data. The inclusion of classificatory effects from sex, tank, the interaction of these effects and the quadratic polynomial B-spline nested in this interaction indicated that, over time, each sex, grown in different tank, presented different mean trajectory, necessitating the inclusion of nesting time in the interaction sex x tank in order to avoid the under or overestimation of breeding values of the selection candidates in breeding programs of this species.

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This study was carried out to evaluate the effects of a shower before and after pig transportation on welfare, meat and carcass quality. We used 384 crossbreeding animals (females and castrated males), from 16 farms in Santa Catarina State, Brazil. A 2x4 factorial arrangement of treatments was employed with two distances from farm to slaughter plant (less than 50km and more than 50km) and four showering protocols. These protocols were applied on pigs: no showering at farm or slaughter plant (Control), no showering at farm but showering at the plant (NMG_MOF); showering at the farm and no showering at the plant (MOG_NMF); showering at the farm and plant (MOG_MOF). None of the factors influenced (P>0.05) physiological variables related to stress (cortisol and lactate in blood samples), number of carcass lesions and the characteristics of meat quality.

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Pós-graduação em Ciência Animal - FMVA

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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The great demand for animal protein was responsible for the increase on the broilers production and hence, the generation of waste from the poultry slaughter was increased as well, which in turn, propelled the development of techniques that allow the reuse and recycling of these wastes. The objective of this study was to evaluate the efficiency of composting on the treatment and recycling of solid waste from poultry slaughterhouse. The solid waste was from a commercial poultry slaughterhouse and was composed of viscera, muscle, fat, bone, blood and feathers that was mixed with a source of carbon, rice husk. Initially, a windrow with a volume of 1.5m(3) was built, and then some parameters were monitored: temperature, total solids (TS), volatile (VS), N, P, K, organic carbon (C), composting organic matter (COC), organic matter resistant to composting (MORC), chemical oxygen demand (COD), mass and volume of the windrow, most probable number (MPN) of total and fecal coliforms, as well as their reductions during the process. The maximum temperature reached in the center of the windrow was 53.3 degrees C (weekly average) since reductions of weight of TS and VS and volume during the pre-composting were 36.1, 44.3 and 23.3%, respectively and during the composting process was 21.8, 23.8 and 4.4%. The low volume reduction can be associated with high concentrations of MORC (40.1%) which can be mainly related to the quality of the carbon source. The process produced satisfactory total reductions of TS, VS and volume that were respectively, 50.1, 57.5 and 26.7%. However reductions were observed in 43% of amount of nitrogen in the final compound. Despite reductions in nitrogen content, composting proved to be an effective method in the treatment of solid waste from poultry slaughterhouse.

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Com o objetivo de avaliar as características de carcaça e a alometria dos cortes comerciais e dos tecidos de cabritos F1 Boer × Saanen, 35 animais foram abatidos ao atingirem 5, 10, 15, 20 e 25 kg de peso vivo (PV). A dieta dos animais foi composta de leite de vaca nos primeiros 49 dias e ração à vontade do sétimo dia até o abate. Os cortes foram obtidos após o resfriamento da carcaça e a perna foi dissecada em músculo, osso e gordura. O PV teve efeito linear decrescente no rendimento de carcaça fria e na área de olho-de-lombo por kg de carcaça. Os pesos de perna, paleta e pescoço em relação à carcaça fria decresceram linearmente, mas houve efeito quadrático sobre o rendimento de costelas e lombo. O crescimento de paleta, pescoço e perna foi isométrico (b=1) ao do corpo, enquanto o das costelas e do lombo foi mais lento (b¹ 1). Os músculos da perna cresceram igualmente, a gordura mais lenta e os ossos mais rapidamente que a perna, enquanto o desenvolvimento da gordura subcutânea foi mais tardio que o da intermuscular. Para obtenção de carcaça de 8 a 11 kg com rendimento superior a 44%, boa proporção de músculo e gordura com menor perda durante o resfriamento, recomenda-se abater os animais com PV entre 20 e 25 kg, mas, se o objetivo for carcaça de menor peso, o abate dos animais deve ser feito ao final do aleitamento com aproximadamente 10 kg de peso corporal.

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Pós-graduação em Engenharia Civil - FEIS