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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 ...
Improving the lipid nutritive value of poultry meat through the incorporation o...
Ponte, Patricia; Prates, J.A.M; Crespo, J.P.; Crespo, D.G.; Mourão, José Luís,; Alves, S.P; Bessa, J.B.; Chaveiro-Soares, M.A.; Ferreira, L.M.A.Dehydrated forages are assumed to be good sources of α-linolenic acid (ALA) and lipid-soluble antioxidant compounds (vitamin E homologs and β-carotene). The effects of including a dehydrated leguminous-based forage in a typical diet for broiler chicken, on performance, meat quality, and fatty acid composition were evaluated. One hundred sixty 1-d-old male commercial broiler chicks (Ross 308) were housed in 20 b...
Restricting the intake of a cereal-based feed in free range pastured poultry: e...
Ponte, Patricia; Prates, J.A.M.; Crespo, J.P.; Crespo, D.G.; Mourão, José Luís; Alves, S.P.; Bessa, J.B.; Chaveiro-Soares, M.A.; Ferreira, L.M.A.Pastures are assumed to be good sources of α-linolenic acid (ALA) and other bioactive compounds. In this study, we evaluated the effects of restricting the intake of a cereal-based feed on the consumption of a legume-based pasture, and consequently on poultry performance and meat quality. Broilers of the RedBro Cou Nu × RedBro M genotype were fed a cereal-based feed at different intake restriction levels (100, ...
Effect of pasture biomass intake on growth performance and meat quality of free...
Ponte, Patrícia Isabel Pinheiro daTese de Doutoramento em Ciência e Tecnologia Animal ; Os efeitos da ingestão de pastagem no desempenho produtivo e na qualidade da carne de frangos em crescimento, bem como o potencial interesse da suplementação das dietas destes animais com celulases e hemicelulases na produção de frangos ao ar livre continuam por avaliar. Os resultados obtidos neste trabalho revelam que a ingestão de pastagem incrementa o de...
Use of ß-glucanases and ß-1,4-xylanases to supplement diets containing alfalfa ...
Mourão, José Luís; Ponte, Patricia; Prates., J.A.M; Centeno., M.S.J; Ferreira, L.M.A; Chaveiro-Soares, M.A; Fontes, CarlosIt is well established that the use of alfalfa in diets for monogastric animals is limited by its high fiber content. However, alfalfa is a natural source of xanthophylls and gives poultry products a desirably yellow color. In addition, alfalfa saponins may contribute to reduce the levels of cholesterol in the meat and egg yolk. We have investigated the potential utilization of β-glucanases and β-1,4-xylanases ...
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