Inclusão de grãos de girassol na ração de cordeiros sobre as características quantitativas da carcaça e qualitativas da carne

This study aimed to evaluate the carcass quantitative characteristics, tissue composition of carcass cuts and meat quality of lambs receiving sunflower seeds in the diet. Twenty-one lambs 7/8 Ile de France 1/8 Ideal, not castrated, with initial body weight of 17 kg were housed in individual pens and distributed in three diets (0,7.5 and 15% of sunflower seeds inclusion) in a completely randomized design in 3 x 2 factorial arrangement (three diets and two carcass cuts). At the end of the experimental period, the animals were slaughtered; weights and hot and cold carcass yields and commercial and biological carcass dressing were collected. The carcasses were split lengthways and left half carcass divided into six anatomical parts. The leg and loin were removed for evaluation of tissue composition, meat color, water holding capacity, cooking losses and shearing force. Difference was detected in the commercial carcass yield; with higher value (46.82% of total weight) for carcasses of lambs fed without sunflower seeds when compared with carcass yield (44.11%) of lambs fed with 15% of sunflower seed inclusion. The proportion of muscle and total fat, as muscle:fat ratio were affected (P<0.05) by feeding, with higher quantity of muscle (63.15%) and less fat (16.63%) in the leg and loin cuts of lambs fed without sunflower seeds. In the leg was observed higher proportions of muscle (67.27%), muscle:bone ratio (4.08) and muscle:fat ratio (4.92) when compared with the loin cut. The water retention capacity and shearing force of Longissimus lumborum muscle showed better results when compared with Semimembranosus muscle. The inclusion of sunflower seeds in the diet of feedlot lambs increased the fat deposition in carcass cuts, however did not affect the other parameters of meat quality.

Lipid metabolism of commercial layers fed diets containing aflatoxin, fumonisin, and a binder

Aflatoxins (AF) and fumonisins (FU) are a major problem faced by poultry farmers, leading to huge economic losses. This experiment was conducted to determine the effects of AF (1 mg/kg of feed) and FU (25 mg/kg of feed), singly or in combination, on the lipid metabolism in commercial layers and investigate the efficacy of a commercial binder (2 kg/t of feed) on reducing the toxic effects of these mycotoxins. A total of 168 Hisex Brown layer hens, 37 wk of age, were randomized into a 3 × 2 + 1 factorial arrangement (3 diets with no binder containing AF, FU, and AF+FU; 3 diets with binder containing AF, FU, and AF+FU; and a control diet with no mycotoxins and binders), totaling 7 treatments. The hens contaminated with AF showed the characteristic effects of aflatoxicosis, such as a yellow liver, resulting from the accumulation of liver fat, lower values of plasma very low-density lipoprotein and triglycerides, and higher relative weight of the kidneys and liver. Hepatotoxic and nephrotoxic effects of FU were not observed in this study. On the other hand, the FU caused a reduction in small intestine length and an increase in abdominal fat deposition. The glucan-based binder prevented some of the deleterious effects of these mycotoxins, particularly the effects of AF on hepatic lipid metabolism, kidney relative weight, and FU in the small intestine. © 2013 Poultry Science Association Inc.

Estimativas de efeitos genéticos e ambientais para características de carcaça mediadas pelo ultra-som em bovinos da raça nelore

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Desempenho e características da carcaça de bovinos nelores terminados em confinamento com dietas a base de caroço de algodão

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Lipídeo e vitamina C em dietas práticas para a Tilápia no Nilo (Oreochromis niloticus)

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

Métodos de castração de machos Aberdeen Angus x Nelore terminados em pastagem

Pós-graduação em Zootecnia - FCAV

Predição da composição tecidual da carcaça de cabritos de diferentes grupos raciais a partir de cortes cárneos

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Estudo comparativo entre fontes de macromoléculas na produção in vitro de embriões bovinos e seus reflexos na criopreservação

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Exigências de lisina e de metionina+cistina digestíveis para aves de corte da linhagem ISA Label em sistemas semi-confinado

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Efeito de dietas com baixo teor protéico, formuladas usando o conceito de proteína ideal, para frangos de corte criados em temperaturas fria, termoneutra e quente

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

Utilização de ração a base de sorgo na alimentação de Tilápia do Nilo (Oreochromis niloticus) sobre as caracteristicas zootécnicas do peixe e caracteristicas físicas, químicas, bioquímicas, histomorfológicas viscerais e sensoriais do filé

Pós-graduação em Alimentos e Nutrição - FCFAR

Parâmetros genéticos e associação de caracteres de importância econômica com polimorfismos dos genes ADIPOR1 e APOB em frangos de corte

Pós-graduação em Genética e Melhoramento Animal - FCAV

Anticorpos policlonais e monensina sódica na alimentação de bovinos jovens confinados com dietas de alto concentrado

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

Manejo do pastejo e suplementação nas águas e seus efeitos em sistemas de terminação de novilhas na seca

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

Suplementação de novilhas de corte em pastagem de capim-Marandu submetidos à intensidades de pastejo sob lotação contínua

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)