Farm Animal Metabolism and Nutrition
redox imbalance. The redox could be balanced by reducing pyruvate to lactate as occurs in mammalian metabolism. This works chemi ...
Glucose Availability and Associated Metabolism 137 Membrane Inside HCOOH Formate dehydrogenase (outer membrane) of methanogens) ...
propionyl-CoA formed in the transcarboxy- lase reaction undergoes transesterification with succinate yielding succinyl-CoA and p ...
metabolite transfer) must exit the cell into the fluid environment of the rumen. Exit is by diffusion and by permeases (Fig. 6.2 ...
garnered from the cited references is presented in Fig. 6.6. Although passive diffusion of the undissociated acid does occur, up ...
uptake that is extruded on the basolateral membrane by the Na+/K+ ATPase. The stoichiometry has not been determined. The acetate ...
cycle embedded in the gluconeogenic pathway from propionate), complete oxidation of glucose yields only 65% of the energy that w ...
in colonic fermentation (Miller, 1995). For a comprehensive review of acetogenesis see Drake (1994). The acetogenic and methanog ...
the caecum is similar to that described for the rumen. In rabbits, the VFA ratio is still dominated by acetate, but butyrate gen ...
References Alpers, D.H. (1987) Digestion and absorption of carbohydrates and proteins. In: Johnson, L.R. (ed.) Physiology of the ...
Harmon, D.L. (1992) Dietary influences on carbohydrases and intestinal capacity for starch hydrolysis in ruminants.Journal of Nu ...
Russell, R.W. and Schmidt, S.P. (1984) Measurement of fractional absorption of glucose from the gut. Journal of Dairy Science67 ...
Chapter 7 Aspects of Cellular Energetics N.S. Jessop Institute of Ecology and Resource Management, The University of Edinburgh, ...
activity associated with eating and pro- cessing of food within the digestive tract. Other maintenance functions include operati ...
of sodium ions, and hence serves to main- tain intracellular sodium ion concentration within certain limits (Smith and Rozengurt ...
charge has to be balanced with positive charges in order to maintain electro- neutrality, and potassium ions are used for this. ...
vasopressin and bradykinin) or activation of tyrosine kinase (in the case of epidermal growth factor and fibroblast growth facto ...
respiration inhibited by ouabain (and hence assumed to represent Na+,K+-ATPase activity) varied with both dietary treatment and ...
As noted earlier, measured activities of Na+,K+-ATPase were higher when the main pH buffer of the incubation medium was HCO 3 / ...
Thus there will be the potential for ionic flux across cell membranes which will be proportional to the surface area of the memb ...
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