Milho ou polpa cítrica associados à glicerina na alimentação de bovinos de corte confinados

Pós-graduação em Zootecnia - FCAV

Glicerina associada à ureia na alimentação de bovinos Nelore

Pós-graduação em Zootecnia - FCAV

Maturação e qualidade de cortes cárneos de cordeiros terminados em confinamento

Pós-graduação em Ciência e Tecnologia Animal - FEIS

Presença e tipificação de Salmonella spp. no conteúdo ruminal de bovinos pós-abate

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Influência da adição de fator de crescimento fibroblástico 10 (FGF10), durante a maturação oocitária, na produção in vitro de embriões bovinos

The Brazilian livestock stands out for having the world largest commercial herd of cattle and leads meat exportation and production of bovine embryos. The in vitro production (IVP) of embryos is considered an effective option to overcome problems such as infertility in cows with high economic value and also for genetic improvement of cattle. The in vitro oocyte maturation is an essential step to the success of IVP, but is still considered poor when compared to in vivo maturation. Recent studies have suggeested an important role of Fibroblast Growth Factor 10 (FGF10) on the in vitro maturation of oocytes, which favored the expression of genes related to oocyte maturation and cumulus cell expansion. Aware that maturity stage influences the final production of blastocysts, we aimed study to verify if the addition of FGF10 into the maturation medium is able to affect positively the IVP of bovine embryos. Hence, FGF10 was added to maturation in five different concentrations: 0.5 ng/mL (group 0.5), 2.5 ng/mL (group 2.5), 5 ng/mL (group 5), 10 ng/mL (group 10) and 50 ng/mL (group 50). Additionally, two other maturation groups were used, group BSA (Bovine Serum Albumin, 4 mg/mL) and group FCS (Fetal Calf Serum, 10%). The rates of cleavage, morula and blastocyst were analyzed by Analysis of Variance (ANOVA), differences of P<0.05 were considered significant. Cleavage rates did not differ between the seven groups. On the other hand, morula rate on FCS group was higher than groups BSA, 0.5, 10 and 50 (P<0.05), but did not differ among groups treated with intermediate doses of FGF10 (2.5 and 5). FCS group presented higher blastocyst rate compared to all other groups that were well below the FCS group (P<0.0001). Therefore, the use of FGF10 during oocyte maturation did not affect positively embryo development on the IVP of bovine embryos

Carne Bovina: Produtividade Vs Qualidade

Bovine meat exerts an important contribution to the human diet, mainly by its high biological value. For this reason the productivity and the quality of beef are so discussed. Productivity is defined as the ratio between production and the factors of production used and quality defined as an adjective given to the product that suits the consumer implicit and explicit. Brazil is the world leader in tonnage exported bovine meat, however the country has a relatively low income, since no exports to the markets of greater added value. Quantify the degree of importance of these two factors in a capitalist market is not easy, so knowing the science that involves this product is vital for both factors. We must know that there is a wide variability in the markets importers and Brazil should seek to be the leader everywhere, whether carcass with better conformation and degree of finish, is lean beef, organic meat is even

Perfil sanitário e pesquisa de Salmonella em frangos e lingüiças pela metodologia tradicional e pela PCR

Novos hábitos alimentares da população e as mudanças nos sistemas de produção e distribuição dos alimentos podem estar fortemente relacionados aos casos de doenças transmitidas pelo consumo de alimentos contaminados por microorganismos. Isso faz com que a preocupação com a qualidade microbiológica dos alimentos aumente mundialmente. Dentre os principais patógenos, destaca-se a Salmonella sp, que pertence à microbiota gatrentestinal de animais silvestres e de animais domésticos criados para o consumo humano (aves, bovinos e suínos). Este fato torna o problema de grande relevância para as autoridades de saúde pública, pois esses microrganismos podem estar associados às infecções ou surtos provocados pela ingestão de alimentos contaminados. Foram coletadas 35 amostras de lingüiças e 25 cortes de frango, nos principais supermercados do município de Botucatu-SP e avaliados quanto à qualidade higiênico-sanitária através da determinação do número mais provável de coliformes termotolerantes (CT), além da presença de Salmonella sp. Os resultados obtidos mostram que 31% das lingüiças e 84% das amostras de frango estavam fora dos padrões higiênico-sanitários estabelecido pela ANVISA (RDC n° 12), que determina uma quantidade máxima de 5x103 CT/g em lingüiça e 104 /g em carne de aves. Em relação à Salmonella sp, estabeleceu-se a ausência dessa bactéria em 25g de lingüiça e não determina nenhum parâmetro para o frango. Entre as 25 amostras de frango analisadas, duas (8%) foram positivas pela metodologia tradicional. Esse... (Resumo completo, clicar acesso eletrônico abaixo)

A influência do estresse sobre a qualidade da carne

The meat quality is evaluated by consumers according to their physical characteristics, such as color, texture, juiciness, tenderness and odor. The stress during the life of the animal and at the moment before the slaughter may be responsible for changes in the transformation of muscle into meat. Such changes may lead to the appearance of DFD (Dark, Firm and Dry) and PSE (Pale, Soft and Exudative) meats, which are poorly accepted in the market – because of their unusual aspect – and inadequate to industrial processing. Factors related to the handling, loading, transport, unloading, resting period and stunning are singled out as critical, since that, in these phases the animals are subjected to adverse situations to which they are accustomed. The aim of this study is to identify the process of ante-mortem and the slaughter itself in which the animals are subjected to stressful situations, as well as the consequences of stress on meat quality

Manejo pré-abate de bovinos

The pre-slaughter moment begins with the animal´s loading on the farm and ends up in its drain. It is a period in which the animal is under physical stress caused by hunger, thirst, fatigue, injuries, and extremes of temperature and psychological stress, due to restraint, handling, innovation and fear. Stress and inappropriate handling bring bad consequences for the final product´s quality, requiring better handling conditions, facilities and equipment. Examples of consequences of mishandling: meat with abnormal color, DFD meat (dark, firm and dry), reduced product´s shelf life, bruises and broken bones in carcasses. The operators should be trained and oriented on the basic principles of biology, behavior and management of cattle. At every step of the pre-slaughter moment, the animals should be handled calmly and quietly to avoid excitement and stress. Operators should avoid shouting, whistling or any noise since cattle have very sensitive ears and can become stressed. If the animals refuse to move, the cause of the problem should be determined

Tratamento de efluentes provenientes de abatedouro de bovinos por meio de reator enzimático seguido de reator aeróbio operado em bateladas sequenciais

Brazil has one of the largest cattle herds in the world, so the cattle slaughter is one of the most important economic activities in the Brazilian market. But this activity requires a high demand of water, resulting in serious problems about the correct disposal of wastewater generated in the process. This effluent has a high pollution load, becoming its receiving bodies (streams and rivers) unfit for various activities such as public water supply, recreation, fisheries. To minimize the environmental impacts of its industrial wastewater and fallow the local environmental legislation, refrigerators must make the treatment of these effluents. This study aimed to verify the efficiency of a enzymatic reactor, when occur hydrolysis of lipids present in the effluent industrial of an cattle slaughter industry. The treatment system used was composed of two separate reactors: one being the anaerobic fluidized bed reactor (AFBR), inoculated with immobilized enzymes on the matrix support, and the other by sequential batch reactor (SBR) inoculated with activated sludge. Whereas, the reactors have been developed and installed at the Wastewater Treatment Laboratory, Faculdade de Ciências e Tecnologia, UNESP, campus Presidente Prudente. The procedure operating occurred differently for each reactor: preparation and inoculation of enzyme granules, filling the reactor, hydrolysis, and AFBR emptying, filling, aerobic reaction, sedimentation, and emptying the SBR. We performed three experimental stages, with the first and second stage of the work were done reactor analyzes separately, and the third step of the analysis were made with the interconnected reactors... (Complete abstract electronic access below)

Indução de parto em bovinos: Princípios e aplicações

Currently, Brazil has one of the largest cattle herds worldwide. In order to keep that milk and meat were introduced reproductive biotechnologies such as artificial insemination, embryo transfer and in vitro fertilization. In certain situations the technique may have undesired effect, for example, the production of calve calves due to the very large increase in the gestation period when performed in vitro fertilization. To avoid this problem we perform the induction of labor in order to prevent the product is longer the womb. This induction can also be made in case of diseases that compromise the life of the mother, twin pregnancy an abnormal size calf. The administration of short acting steroids, prostaglandins, association of short acting steroids and prostaglandins and association of short acting steroids, prostaglandins and long-acting corticosteroids are some of the possibilities of induction

Material de risco específico no abate de bovinos

La Encefalopatía Espongiforme Bovina (EEB) es una enfermedad degenerativa mortal y transmisible del sistema nervioso central del ganado, con largo período de incubación y clínicamente se caracteriza por sintomas nerviosos, la reacción exagerada a los estímulos externos y dificultad locomoción. La EEB es una enfermedad del grupo de las Encefalopatías Espongiformes Transmisibles (EET), y consiste en una enfermedad zoonótica transmitida por comer alimentos contaminados con una proteína llamada príon. Se discute el control de enfermedades, celebrada en la carne de vacuno refrigerada masacre a través de las Material Especificado de Riesgo (MER) que son el cerebro, cráneo, ojos, amígdalas, médula espinal, gânglio del trigémino, gânglios de la raiz dorsal y el íleon distal. Estos organismos pueden contener el agente de la EEB y transmitir la enfermedad. Los controles se basan en la ley brasileña y las normas internacionales que dictan la recogida y destrucción de estos materiales, sino también las normas para la comercialización de productos procedentes de rumiantes, así como la prohibición de alimentar rumiantes com productos de origen animal

Aspectos do controle de resíduos de avermectinas no abate de bovinos

Pós-graduação em Medicina Veterinária - FCAV

Desempenho, qualidade de carcaça e da carne de cordeiros alimentados com dietas contendo silagens de milho consorciadas ou não com capins tropicais

Pós-graduação em Ciência e Tecnologia Animal - FEIS

Análises microbiológicas e quantificação de proteína de soja pela metodologia isotípica (δ13C and δ15N) em hambúrgueres bovinos de marcas comerciais brasileiras

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)