Relative bioavailability of guanidinoacetic acid delivered ruminally or abomasally to cattle
نویسندگان
چکیده
منابع مشابه
Bioavailability of Ruminally or Abomasally Infused L-carnitine in Holstein Heifers
This study evaluated the relative bioavailability of carnitine delivered by different methods in dairy cattle. Four Holstein heifers were used in a split-plot design to compare ruminally or abomasally infused L-carnitine. The study included 2 main-plot periods, with infusion routes allocated in a crossover design. Within main-plot periods, each of 3 subplot periods consisted of 4-d infusions se...
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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. Ruminal degradation of the protected methionine was assessed using the in situ technique. The intestinal availabili...
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Guanidinoacetic acid (GAA) is the natural biosynthetic precursor of creatine, in a metabolic reaction that requires only a methyl group transfer. The use of GAA as a food additive for restoring creatine load in human tissues is rather unexplored and data on efficacy and safety are limited. In particular, an increase in serum homocysteine after GAA administration can be regarded as critical and ...
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Most chronic renal failure (CRF) patients show low serum concentrations of guanidinoacetic acid (GAA). In this study, the author investigated the impaired metabolism of GAA in CRF focusing on the transformation of arginine (Arg) to GAA by analyzing CRF rabbits using 14C-Arg. The CRF group which consisted of 6 CRF rabbits, was compared with 6 normal rabbits (normal group). Blood samples were obt...
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BACKGROUND The bioavailability of dietary folate has been estimated to be approximately 50% of that of synthetic folic acid. Folate in the diet is linked to a polyglutamate chain that may restrict folate absorption. OBJECTIVE Our goal was to quantify the bioavailability and bioefficacy of low doses of polyglutamyl folic acid relative to that of monoglutamyl folic acid. DESIGN In total, 180 ...
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ژورنال
عنوان ژورنال: Journal of Animal Science
سال: 2020
ISSN: 0021-8812,1525-3163
DOI: 10.1093/jas/skaa282