Encontrados 30 documentos, a visualizar página 1 de 3
Alternatives to antibiotic growth promoters in rabbit feeding - a review
Falcão, Luísa; Castro-Solla, Luís; Maertens, Luc; Marounek, Milan; Pinheiro, Victor; Freire, João Pedro; Mourão, José LuísThis review is focused on the most studied and developed substances which are commonly knownas alternatives to dietary antibiotics, particularly as far as rabbit feeds are concerned. After a reminder of thereason to be and success of antibiotic growth promoters, and why they lately came to be banned in theEuropean Union, we successively deal with probiotics, prebiotics, enzymes and organic acids. Data on rabbit...
Crop beta-glucanase activity limits the effectiveness of a recombinant cellulas...
Ponte, Patricia; Lordelo, M.M.S; Chaveiro-Soares, Manuel M; Mourão, José Luís; Crespo, J.P; Crespo, D.G.; Gama, L.T.,; Ferreira, Luís; Prates, J.A.M.,1. The supplementation of diets rich in soluble polysaccharides with microbial cellulases and hemicellulases decreases digesta viscosity and promotes broiler performance. 2. In contrast, recent experiments suggest that polysaccharidases are ineffective for improving the nutritive value of pasture biomass used by free-range broilers. However, the feasibility of using cellulases and hemicellulases to improve the ...
Effect of substitution of wheat starch by potato starch on the performance, dig...
Pinheiro, V,; Falcão e Cunha, L,; Mourão, José Luis; Gidenne, T.The goal of this research was to study the effect of the substitution of wheat starch by potato starch (PS) on the performance, health and digestion of growing rabbits. Three experimental diets were formulated with 0%, 7% and 14% PS (PS0, PS7 and PS14, respectively) and similar starch contents (22% dry matter basis), proteins and fibre. The three diets were administered to three groups of 48 rabbits from weanin...
Polissacáridos da Parede Celular dos Cereais
Mourão, José LuísA primeira parte desta tese de doutoramento é constituída por uma revisão bibliográfica, onde focámos a organização e a composição da parede celular dos grãos de cereais. Analisámos os principais polissacáridos da parede celular (celulose, glucanas com ligações mistas, xilanas e substâncias pécticas). Salientámos a importância das ligações químicas entre as moléculas destes compostos como factores determinant...
Effects of the dietary incorporation of untreated and white-rot fungi (Ganoderm...
Ribeiro, Luis; Pinheiro, Victor; Outor-Monteiro, Divanildo; Mourão, José Luís; Bezerra, R.M.F; Dias, A.A.; Bennett, R.N; Marques, G.; Rodrigues, M.A.The aim of this study was to evaluate the effects of the level of inclusion of olive leaves and its pre-treatment with Ganoderma resinaceum Boud on growth performance, nutrient digestibilities and caecal fermentation. A total of 48 rabbits were kept in individual cages and divided in 4 groups of 12 animals. Animals were fed ad libitum with one of four diets based on a basal feed for growing rabbits – Control di...
Determination of furaltadone and nifursol residues in poultry eggs by liquid ch...
Barbosa, J,; Freitas, A; Mourão, José Luís; Noronha da Silveira, MI; Ramos, FThe use of nitrofurans as veterinary drugs has been banned from intensive animal production in the European Union (EU) since 1993. The objective of the present study was to evaluate the accumulation and depletion of furaltadone and nifursol and their side-chain metabolites 5-methylmorpholino-3-amino-2-oxazolidinone (AMOZ) and 3,5-dinitrosalicylic acid hydrazide (DNSAH) in eggs after administration of therapeuti...
Real-time ultrasound to predict rabbit carcass composition and volume of longis...
Jorge, A.,; Silva, S,; Mourão, Jose Luís; Guedes, C,; Pinheiro, V. M..Real-time ultrasonography (RTU) was used to measure the longissimus dorsi muscle (LM) volume in vivo and to predict the carcass composition of rabbits. For this, 63 New Zealand White × Californian rabbits with 2093±63 g live weight were used. Animals were scanned between the 6th and 7th lumbar vertebrae using an RTU equipment with a 7.5 MHz probe. Measurements of LM volume were obtianed both in vivo and on carc...
Níveis de cálcio e granulometria de calcário na dieta de poedeiras comerciais s...
Pelicia, K.; Mourão, José Luís; Garcia, E.A.; Pinheiro, Victor; Molino, A.B.; Berto, D.A.; Faitarone, A. B.; Vercese, F.; Silva, A.P.A total of 405 23-week-old ISA Brown layers were distributed in a completely randomized experimental design in a factorial arrangement with nine treatments consisting of three dietary calcium levels (3.5, 3.75, and 4.5%) and three limestone particle sizes (100% fine limestone (FL), 70% FL + 30% coarse limestone (CL) and 50% (FL) + 50% (CL)), with nine replicates of five birds per cage. The following parameters...
Growth performance, carcass characteristics and meat quality of growing rabbits...
Pinheiro, Victor; Outor-Monteiro, Divanildo; Silva, Severiano; Silva, J.; Mourão, José LuísThe study was carried out to investigate the effects of two housing systems on the growth performance, carcass traits, and meat quality of growing rabbits during the terminal fattening period. The rabbits were lodged in conventional cages between 35 and 59 days of age (growing period). At this age, they were moved into two different housing systems until they were 87 days of age (fattening period). During the f...
Evaluación del análisis de imagen de vídeo para predecir la composición de la c...
Silva, S.R; Mourão, José Luis; Guedes, C; Pinheiro, VLa información sobre la técnica de análisis de imágenes de video (VIA) en la evaluación de la composición de la canal de conejos es escasa o inexistente. Así, este trabajo tiene como objetivo aplicar esta técnica en la estima de la composición de la canal de los conejos. En este estudio, fueron tratadas las imágenes de 20 canales de conejas con 2,2kg. Después de obtener las imágenes, fueron realizadas trece med...
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