Encontrados 14 documentos, a visualizar página 1 de 2
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 ...
Effects of dietary fibre source and enzyme supplementation on faecal apparent d...
Carneiro, M.S.C.; Lordelo, M.M.; Cunha, L.F.; Freire, J.P.B.The effects of fibre source, either wheat bran (WB) or maize cobs (MC), and dietary exogenous enzymes (ES) on performance and digestive parameters of weaned piglets were studied in 24 Duroc×Landrace male piglets, weaned at 21 days of age. There were four treatments arranged factorially, with two sources of fibre (WB or MC) and two concentrations of ES (0 or 0.15 g/kg) that contained 800 U/kg of endo-1,4- -cellu...
Near infrared reflectance spectroscopy for the determination of free gossypol i...
Lordelo, M.M.; Shaaban, S.A.; Dale, N.M.; Calhoun, M.C.; Vendrel, P.F.; Davis, A.J.Gossypol is a toxic polyphenolic compound produced by the pigment glands of the cotton plant. The free gossypol content of cottonseed meal (CSM) is commonly determined by the American Oil Chemists’ Society (AOCS) wet chemistry method. The AOCS method, however, laboratory-intensive, time-consuming, and therefore, not practical for quick field analyses. To determine if the free gossypol content of CSM could be pr...
Isoleucine and valine supplementation of a low-protein corn-wheat-soybean meal-...
Lordelo, M.M.; Gaspar, A.M.; Le Bellego, L.; Freire, J.P.B.The effects of Ile and Val supplementation of a low-CP, corn-wheat-soybean meal-based piglet diet on growth performance, incidence of diarrhea, and N balance were studied using 60 Landrace × Duroc male piglets in a 4-wk experiment. The 60 individually caged piglets were divided into 5 dietary treatments, each consisting of 12 piglets. Diet 1 was a positive control diet (20% CP); diet 2 was a low-CP negative con...
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...
Effects of a ruminally protected B vitamin supplement on milk yield and composi...
Lordelo, M.M.; Sacadura, F.C.; Robinson, P.H.; Evans, E.It is not clear if B vitamins supplied to the small intestine of dairy cows from dietary and rumen microbial sources are provided in sufficient quantity to maximize animal performance. Our objective was to determine effects of adding a ruminally protected B vitamin blend supplement, containing biotin, folic acid, pantothenic acid and pyridoxine, to the diet of high producing dairy cows on their productivity. Tw...
Effect of prebiotic or probiotic supplementation and ileo rectal anastomosis on...
Marinho, M.C.; Pinhob, M.A.; Mascarenhas, R.D.; Capela e Silva, Fernando; Lordelo, M.M.; L.F. Cunha, L.F.; Freire, J.P.B.Forty eight 21 days old piglets were used to compare the effect of prebiotic or probiotic supplementation and ileo rectal anastomosis on the morphology of the small intestine. Half of the piglets were maintained intact and the other half was subjected to an ileo rectal anastomosis (IRA). Each group of piglets received one of the following diets: 1) basal diet (C), 2) basal diet supplemented with a Xylo-oligosac...
Microbial activity in the gut of piglets: effect of fibre source and enzyme sup...
Lordelo, M.M.; Carneiro, M.; Cunha, L.F.; Freire, J.P.B.Twenty four Duroc×Landrace male piglets, aged 21 days, were assigned to 1 of 4 experimental diets. Diets 1 and 2 contained 150 g kg−1 wheat bran and diets 3 and 4 contained 90 g kg−1 maize cobs as the major fibre source. All diets contained 480 g kg−1 wheat and 200 g kg−1 soybean meal. Diets 2 and 4 were supplemented with the following enzyme complex: 800 U/kg cellulase, 1800 U/kg glucanase and 2600 U/kg xylana...
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