第二章-2 计算消化率.ppt

Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,Digestion,*,Metabolism cages for total collection of feces and urine,Digestion,Calculating Digestibility and Nutrient Balance from Total Collection of Feces,Apparent,Digestibility,=,Nutrient,Intake,-,Fecal,Nutrient,X,100,Nutrient Intake,Digestion,Measuring Digestibility and Nutrient Balance,Fecal Excretions,Undigested residues,Metabolic nutrient,(Endogenous secretions),Residues of secretions,Cellular debris,Excretory products,Debris and metabolites of microorganisms,Digestion,True,Digestibility,=,Nutrient,Intake,Fecal,Nutrient,Metabolic,Fecal,Nutrient,-,-,Nutrient Intake,X 100,Digestion,Digestion,Measuring Digestibility and Nutrient Balance,Indicators for Determining Digestibility,Characteristics of indicators:,Inert,Not digested,Moves with digesta,Examples of indicators:,Lignin,Chromic oxide,Cerium,Rare earth,Polyethylene glycol(PEG),Digestion,Measuring Digestibility and Nutrient Balance,Apparent Marker in Feed Nutrient Feces,Digestibility=100,100,X X,Marker in Feces Nutrient Feed,Digestion,Digestion,Diet Duodenum Ileum Feces,14%CP 22%CP 12%CP 15%CP,25 ppm 40 ppm 70 ppm 100 ppm,Digestion,Diet Duodenum Ileum Feces,14%CP 22%CP 12%CP 15%CP,25 ppm 40 ppm 70 ppm 100 ppm,Digestion,Measuring Digestibility and Nutrient Balance,Urinary Excretions,Water,Metabolites containing nitrogen and sulfur,Minerals Na,Cl,K,P,Water soluble vitamins,In disease:,Sugars,Proteins,Ketone bodies,Digestion,