منابع مشابه
Relationship of rumen gram-negative bacteria and free endotoxin to lactic acidosis in cattle.
Feeding grain to animals not adapted to grain resulted in a marked increase in the . / . concentration of free endotoxln m the rumen. Endotoxin concentration increased 15 to 18 times within 12 hr after lactic acidosis was induced through grain engorgement. The increase was accompanied by a shift from predominantly gram-negative to gram-positive bacteria. Data from in vitro fermentations showed ...
متن کاملDiversity of Rumen Bacteria in Canadian Cervids
Interest in the bacteria responsible for the breakdown of lignocellulosic feedstuffs within the rumen has increased due to their potential utility in industrial applications. To date, most studies have focused on bacteria from domesticated ruminants. We have expanded the knowledge of the microbial ecology of ruminants by examining the bacterial populations found in the rumen of non-domesticated...
متن کاملRole of Age-Related Shifts in Rumen Bacteria and Methanogens in Methane Production in Cattle
Rumen microbiota are essential for maintaining digestive and metabolic functions, producing methane as a byproduct. Dairy heifers produce large amounts of methane based on fermentation of digested organic matter, with adverse consequences for feed efficiency and the environment. It is therefore important to understand the influence of host age on the relationship between microbiota and methane ...
متن کاملMonensin and dichloroacetamide influences on methane and volatile Fatty Acid production by rumen bacteria in vitro.
The effect of monensin (0 or 33 mug/g of diet) upon rumen fermentation in the presence and absence of methanogenesis was determined in vitro by using mixed rumen organisms continuously cultured for 17 days. Methane was inhibited by dichloroacetamide (DCA; 32 mg/day) or by a pH of 5.1. Monensin effected a significant decrease in the ratio of acetic to propionic acid in the presence or absence of...
متن کاملCell envelope morphology of rumen bacteria.
The cell walls of three species of rumen bacteria (Bacteroides ruminicola, Bacteroides succinogenes, and Megasphaera elsdenii) were studied by a variety of morphological methods. Although all the cells studied were gram-negative and had typical cytoplasmic membranes and outer membranes, great variation was observed in the thickness of their peptidoglycan layers. Megasphaera elsdenii evidenced a...
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ژورنال
عنوان ژورنال: Nihon Chikusan Gakkaiho
سال: 1993
ISSN: 1346-907X,1880-8255
DOI: 10.2508/chikusan.64.1001