Nitrogen Sources for Starch Digestion by Rumen Microorganisms
نویسندگان
چکیده
منابع مشابه
Starch digestion by feedlot cattle: predictions from analysis of feed and fecal starch and nitrogen.
To evaluate the utility of N as a digestion marker to predict total tract starch digestion, data from 32 metabolism trials involving 147 steers and 637 individual starch digestibility measurements were compiled. All trials were conducted at the University of California Desert Research and Extension Center. Total tract starch digestibility was determined from concentrations of starch and chromic...
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We investigated the N-utilizing bacterial community in anoxic brackish groundwater of the low and intermediate level nuclear waste repository cave in Olkiluoto, Finland, at 100 m depth using (15)N-based stable isotope probing (SIP) and enrichment with (14∕15)N-ammonium or (14∕15)N-nitrate complemented with methane. Twenty-eight days of incubation at 12°C increased the concentration of bacterial...
متن کاملMetabolism of glycine by rumen microorganisms.
Rumen microorganisms rapidly metabolized glycine at rates varying from 0.014 to 0.241 mumole of glycine per ml per min. The main metabolic products were carbon dioxide, acetic acid, and ammonia; little glycine was incorporated into bacterial protein. Use of carboxyl or methylene-labeled glycine showed that the carbon dioxide came mainly from the carboxyl of glycine, whereas both carbons of acet...
متن کاملRuminal and Postruminal Starch Digestion by Cattle
Grains are fed to livestock primarily to supply energy, and most of the digestible energy in cereal grains comes from starch. To maximize starch digestion by livestock, corn and sorghum grain must be processed. For nonruminants, starch from finely ground grain is fully digested, but for ruminants fed high concentrate diets, finely ground grain often causes metabolic diseases. Hence, rather than...
متن کاملThe assessment of glucose-containing substances in rumen microorganisms during a digestion cycle in sheep.
It has been established that the digestion of carbohydrates in the ruminant occurs mainly through the agency of the micro-organisms of the alimentary tract. The evidence for this subject has been reviewed by Elsden & Phillipson (1948) and Baker & Harriss (1947-8). Most of this digestion occurs in the rumen. Of the cellulose of the diet about 80 yo of the total digested disappears in the rumen, ...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 1966
ISSN: 0022-0302
DOI: 10.3168/jds.s0022-0302(66)88129-8