Results 181 to 190 of about 1,045,204 (221)

Degradation of forage chicory by ruminal fibrolytic bacteria [PDF]

Journal of Applied Microbiology, 2008
Determine the susceptibility of forage chicory (Cichorium intybus L.) to degradation by ruminal fibrolytic bacteria and measure the effects on cell-wall pectic polysaccharides.Large segments of fresh forage chicory were degraded in vitro by Lachnospira multiparus and Fibrobacter succinogenes, but not by Ruminococcus flavefaciens or Butyrivibrio ...
Philip J Harris
exaly   +3 more sources

Variability in in situ ruminal degradation parameters causes imprecision in estimated ruminal digestibility [PDF]

Journal of Dairy Science, 2010
The ruminal digestibility of dietary ingredients is frequently estimated with degradation parameters (e.g., rate and extent of degradation). Mean degradation parameters (e.g., those in a feed library) are often used, but limited data suggest considerable variation around these means, potentially leading to imprecise digestibility estimates.
T J, Hackmann, J D, Sampson, J N, Spain
exaly   +3 more sources

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Enhanced Degradation of 3-Nitropropanol by Ruminal Microorganisms

Journal of Animal Science, 1986
Ruminal fluid was obtained over a 4-yr period from cattle on various diets and supplements to determine the effects of different inocula on the microbial degradation of 3-nitropropanol (NPOH), a toxic metabolite in certain Astragalus spp. (Leguminosae). Nitrite (NO2-) metabolism was also studied in vitro because rapid NO2- reduction is required for the
W, Majak, K J, Cheng, J W, Hall
openaire   +2 more sources

Do Naïve Ruminants Degrade Alkaloids in the Rumen?

Journal of Chemical Ecology, 2005
Three different methods for the culture of rumen microorganisms (Hungate's technique, the Hohenheim in vitro gas production method, and the semicontinuous rumen simulation technique) were employed to study the influence of various alkaloids (sparteine, lupanine, cytisine, atropine, quinidine, lobeline, harmaline, arecoline, nicotine, caffeine ...
Ramón, Aguiar, Michael, Wink
openaire   +2 more sources

Ruminal Degradation and Outflow of Amino Acids in Cows

Journal of Veterinary Medicine Series A, 1989
SummaryTwo rumen‐ and duodenum‐cannulated cows were used to study the disappearance rate, degradation in, and outflow from the rumen of four amino acids administered individually into the rumen at the following dose levels (mmol): lysine 273–547‐820, tyrosine 276–496‐828, isoleucine 381–762‐1143, methionine 335.
N, Sulu, K, Bjørnstad, D, Grønseth, W, Velle   +3 more
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Measuring resistance to ruminal degradation and bioavailability of ruminally protected methionine

Animal Feed Science and Technology, 2000
The objectives of this study were to evaluate ruminal degradation and intestinal digestion of two ruminally protected methionine (RPM) products and to assess the potential use of changes in plasma methionine concentrations as an indication of methionine availability to the animal.
Alex Bach, Marshall D Stern
openaire   +1 more source

Preservation of ruminal microorganisms for in vitro determination of ruminal protein degradation.

Journal of Animal Science, 1996
Ruminal microorganisms, preserved either lyophilized or frozen, were compared with freshly strained ruminal fluid for proteolytic activity and as inoculum source for determination of ruminal protein degradation rates by the inhibitor in vitro method. Dialysis and glycerol addition had no effect on the proteolytic activity of preserved microorganisms ...
N D, Luchini, G A, Broderick, D K, Combs
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Cellulose Degradation by Ruminal Microorganisms

Critical Reviews in Biotechnology, 1992
The rumen is a highly developed digestive organ in which feed material, particularly plant fiber, is efficiently digested by a complex microbial fermentation.
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Differential ruminal degradation of alfalfa proteins

Canadian Journal of Plant Science, 2009
Alfalfa (Medicago sativa L.) has high crude protein that is rapidly and extensively degraded in the rumen. Our objective was to develop a protocol where individual proteins could be characterized for their ruminal degradation. Proteins from individual genotypes of three alfalfa cultivars were characterized using fluorescence 2D difference gel ...
D Chen, M D Peel, K C Olson, B C Weimer, D B DeWald   +4 more
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In Vitro Degradation of Melamine by Ruminal Microorganisms

2015
An in vitro study was conducted to determine the extent of melamine degradation in rumen liquor. Rumen liquor was collected from two ruminally cannulated Holstein cows on four separate dates, one week apart. Erlenmeyer flasks (250 mL) were prepared for incubation by adding 1000 mg of a dairy feed substrate, 100 mg melamine and 100 mL incubation medium,
Cruywagen, C. W., Calitz, T.
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