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Use of ß-glucanases and ß-1,4-xylanases to supplement diets containing alfalfa ...
Mourão, J.L.; Ponte, P.I.P; Prates, J.A.M.; Centeno, M.S.J.; Ferreira, L.M.A.; Chaveiro-Soares, M.A.; Fontes, C.M.G.It 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 ...
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...
Pasture intake improves the performance and meat sensory attributes of free-ran...
Ponte, P.I.P; Rosado, C.M.C; Crespo, J.P.; Crespo, D.G; Mourão, José Luís; Chaveiro-Soares, M.A.; Mendes, I.L.T.; Gama, L.T.; Prates, J.A.M.Free-range chickens are assumed to consume low to moderate levels of pasture, although the effects of forage intake in broiler performance and poultry meat quality remain to be established. In addition, despite cellulases and hemicellulases being widely used as feed supplements to improve the nutritive value of cereal-based diets for fast-growing broilers, the potential interest of these biocatalysts in the pro...
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, ...
Role of a family 11 carbohydrate-binding module in the function of a recombinan...
Lordelo, M.M.; Guerreiro, C.I.P.D.; Ribeiro, T.; Ponte, P.I.P.; Falcão, L.; Freire, J.P.B.; Ferreira, L.M.A.; Prates, J.A.M.; Fontes, C.M.G.A.Cellulases and xylanases display a modular architecture that comprises a catalytic module linked to one or more non-catalytic carbohydrate-binding modules (CBMs). CBMs have been classified into 52 different families, based on primary structure similarity. These non-catalytic modules mediate a prolonged and intimate contact of the enzyme with the target substrate eliciting efficient hydrolysis of the target poly...
Crop -glucanase activity limits the effectiveness of a recombinant cellulase us...
Lordelo, M.M.; Ponte, P.I.P.; Guerreiro, C.I.P.D.; Soares, M.C.; Mourão, J.L.; Crespo, J.P.; Crespo, D.G.; Prates, J.A.M.; Ferreira, L.M.A.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 ...
A family 11 carbohydrate binding module (CBM) improves the efficacy of a recomb...
Lordelo, M.M.; Ribeiro, T.; Ponte, P.I.P.; Guerreiro, C.I.P.D.; Santos, H.M.; Falcão, L.; Freire, J.P.B.; Ferreira, L.M.A.; Prates, J.A.M.1. Exogenous microbial -1,3-1,4-glucanases and hemicellulases contribute to improving the nutritive value of cereals rich in soluble non-starch polysaccharides for poultry. 2. In general, plant cell wall hydrolases display a modular structure comprising a catalytic module linked to one or more non-catalytic carbohydrate-binding modules (CBMs). Based on primary structure similarity, CBMs have been classified in...
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 ...
Produção de frangos de carne em pastagens à base de Leguminosas
Ponte, P.I.P; Rosado, C.M.C; Crespo, J.P; Crespo, D.G; Chaveiro-Soares, M.A; Mourão, J.L; Mendes, I; Gama, L.T; Prates, J.A.M; Ferreira, L.M.APortugal apresenta reconhecidas potencialidades edafoclimáticas para a produção de pastagens à base de leguminosas, tanto em condições de regadio como de sequeiro. Este trabalho pretendeu avaliar a possibilidade de desenvolver formas alternativas para a produção de frangos de carne em pastagens. Avaliou-se o desempenho produtivo de frangos RedBro Cou Nu x RedBro M mantidos dos 28 aos 56 dias em pastagens de se...
A note on ensiling characteristics of the tropical grass Setaria sphacelata var...
Martins, J.M.; Fernandes, T.H.; Ferreira, L.M.A.The objective of this study was to evaluate the ensiling characteristics of Setaria sphacelata var. splendida (S. splendida) and to identify ensilability limiting factors of this tropical grass, locally produced.
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