A study was conducted to evaluate the effects of dietary α-amylase and β-xylanase supplementation of corn-soy diets, formulated with or without supplemental phytase, on growth performance, energy utilization, and starch digestibility in broiler chickens. A total of 336 slow-feathering, Cobb × Cobb 500 male broilers were randomly distributed to 6 treatments having 8 replicates of 7 birds each. B...

The effect of dietary phytate and phytase on carbohydrase activity and hexose transport was investigated in broiler chickens. Diets containing phytate P (2.2 or 4.4 g/kg) with different phytase dose rates (0, 500, or 1,000 phytase units/kg) were fed to 504 female Cobb chicks for 3 wk. Diets containing high phytate concentrations depressed (P < 0.05) BW and G:F, whereas phytase supplementation i...

Exogenous enzymes which, for the purpose of this paper, include carbohydrases and phytase, are now extensively used throughout the world as additives in non-ruminant diets. The chemical effects of these enzymes are well understood, but the manner in which their bene®ts to the animal are brought about is still under debate. Regardless, the overall effect of carbohydrase enzyme use is to reduce t...

Title of Dissertation: COMPLEX POLYSACCHARIDE DEGRADATION BY MICROBULBIFER DEGRADANS STRAIN 2-40: STUDIES OF THE CHITINOLYTIC SYSTEM AND CARBOHYDRASE ARCHITECTURE Michael B. Howard, Doctor of Philosophy, 2004 Dissertation Directed By: Professor Steven W. Hutcheson, Department of Cell Biology and Molecular Genetics Microbulbifer degradans strain 2-40 is a Gram negative marine bacterium that is a...

The Nelson-Somogyi (NS) and 3,5-dinitrosalicylic acid (DNS) assays for reducing sugars are widely used in measurements of carbohydrase activities against different polysaccharides. Using twelve commercial enzyme preparations, the comparison of the NS and DNS assays in determination of cellulase, β-glucanase, xylanase, and β-mannanase activities was carried out. When cellulase activities against...

The objectives of this study were to assess the biogas potential of landfilled materials and to further validate the suitability of the enzymatic hydrolysis test EHT as a valuable alternative to substitute the standardised test currently in use (BMP). Both tests were applied to a range of landfill waste samples. The waste composition and volatile solids content (VS) profile together with the BM...

Carbohydrase and sulphata-se activities of Porphyra umbilicalis. By S. PEAT and D. A. REEs 7 Equilibrium constants of phosphoryl transfer from CM1 to C(6) Of Oa-D-glucose 1-phosphate and from glucose 6-phosphate to water. By M. R. ATKiNsoN, E. JoHNsoN and R. K. MoRTow 12 -The chemistry of connective tissues. 6. The constitution of the chondroitin sulphate-protein complex in cartilage. By S. M. ...

An experiment was conducted to evaluate the effect of diets with reduced energy level content, supplemented carbohydrase, on broiler performance and coefficient metabolizability nutrients. A total 720 one-day-old male Cobb-500 chicks were distributed in a completely randomized design, six treatments, eight repetitions 15 birds each. The treatments were: (1) positive control, basal diet meet req...

The aim of the present experiment was to determine the influence of either probiotic or antibiotic inclusion in the diets of pigs from birth on the development of enzyme activity in the small intestine. Pigs were fed on creep feed and grower diets containing either a probiotic, an antibiotic or no added growth promoter. At 7, 17, 42 and 80 d of age pigs from each treatment group were sampled to...