scholarly journals Effect of Dietary Protein and Sulfur Containing Amino Acid Levels and the Ratios of These Nutrients for Growing Chickens on Their Performance

1974 ◽  
Vol 11 (2) ◽  
pp. 59-65
Author(s):  
Sadanobu HIJIKURO
Keyword(s):  
Amino Acid ◽  
Dietary Protein ◽  
Amino Acid Levels ◽  
Sulfur Containing

scholarly journals Enzymes and Metabolites of Cysteine Metabolism in Nonhepatic Tissues of Rats Show Little Response to Changes in Dietary Protein or Sulfur Amino Acid Levels

2002 ◽  
Vol 132 (11) ◽  
pp. 3369-3378 ◽  
Author(s):  
Martha H. Stipanuk ◽  
Monica Londono ◽  
Jeong-In Lee ◽  
Mindy Hu ◽  
Anthony F. Yu
Keyword(s):  
Amino Acid ◽  
Dietary Protein ◽  
Sulfur Amino Acid ◽  
Cysteine Metabolism ◽  
Amino Acid Levels

scholarly journals Response of Plasma Concentration of Free Amino Acid to Change of Dietary Protein and Amino Acid Levels in Adult Thoroughbreds

2004 ◽  
Vol 15 (4) ◽  
pp. 93-98 ◽  
Author(s):  
Hisao TAKAGI ◽  
Chisato YONEMOCHI ◽  
Yasushi HASHIMOTO ◽  
Akira MATSUI ◽  
Yo ASAI ◽  
...  
Keyword(s):  
Amino Acid ◽  
Plasma Concentration ◽  
Free Amino Acid ◽  
Dietary Protein ◽  
Free Amino ◽  
Amino Acid Levels

The effect of insulin deficiency, dietary protein intake, and plasma amino acid concentrations on brain amino acid levels in rats

1985 ◽  
Vol 63 (5) ◽  
pp. 487-494 ◽  
Author(s):  
N. Theresa Glanville ◽  
G. Harvey Anderson
Keyword(s):  
Amino Acid ◽  
Dietary Protein ◽  
Protein Intake ◽  
Plasma Amino Acid ◽  
Dietary Protein Intake ◽  
Influx Rate ◽  
Amino Acid Levels ◽  
The Brain ◽  
Amino Acid Concentrations ◽  
Brain Amino Acid

The effect of diabetes (streptozotocin, 65 mg/kg ip), dietary protein intake (15–60%), and plasma amino acid concentrations on brain large neutral amino acid levels in rats was examined. After 20 days, the plasma concentrations of methionine and the branched chain amino acids (BCAA), valine, isoleucine, and leucine were increased in diabetic rats. In brain tissue, methionine and valine levels were increased but threonine, tyrosine, and tryptophan concentrations were depressed. Increased protein consumption promoted a diabetic-like plasma amino acid pattern in normal rats while enhancing that of diabetic animals. However, with the exception of threonine, glycine, valine, and tyrosine, there was little effect on brain amino acid levels. A good association was found between the calculated brain influx rate and the actual brain concentration of threonine, methionine, tyrosine, and tryptophan in diabetic animals. There was no correlation, however, between brain influx rate and brain BCAA levels. Thus, the brain amino acid pattern in diabetes represents the combined effects of insulin insufficiency and composition of the diet ingested on plasma amino acid levels as well as metabolic adaptation within the brain itself.

Effects of dietary protein and amino acid levels on the expression of selected cationic amino acid transporters and serum amino acid concentration in growing pigs

2012 ◽  
Vol 66 (4) ◽  
pp. 257-270 ◽  
Author(s):  
Héctor García-Villalobos ◽  
Adriana Morales-Trejo ◽  
Benedicto A. Araiza-Piña ◽  
John K. Htoo ◽  
Miguel Cervantes-Ramírez
Keyword(s):  
Amino Acid ◽  
Acid Concentration ◽  
Dietary Protein ◽  
Growing Pigs ◽  
Amino Acid Concentration ◽  
Amino Acid Transporters ◽  
Cationic Amino Acid ◽  
Amino Acid Levels

REPLACEMENT OF SOYBEAN MEAL IN CHICKEN BROILER DIETS BY RAPESEED MEAL AND FISH MEAL COMPLEMENTARY SOURCES OF DIETARY PROTEIN

1981 ◽  
Vol 61 (4) ◽  
pp. 999-1004 ◽  
Author(s):  
H. W. HULAN ◽  
F. G. PROUDFOOT
Keyword(s):  
Amino Acid ◽  
Soybean Meal ◽  
Dietary Protein ◽  
Fish Meal ◽  
Amino Acid Content ◽  
Rapeseed Meal ◽  
Complete Replacement ◽  
Amino Acid Levels ◽  
Biological Performance ◽  
Finisher Diets

Two experiments were conducted to evaluate the nutritional value of Brassica napus 'Tower' rapeseed meal (Tower RSM) and B. campestris 'Candle' RSM or combinations of Tower RSM and fish meal (FM) or Candle RSM and FM as partial or complete replacement for soybean meal (SM) in chicken broiler starter and finisher diets. Amino acid levels were maintained in diets where SM was replaced by RSM by increasing the level of FM. The results of these experiments indicate that RSM can replace up to 80% of the SM in chicken broiler starter and finisher diets on a straight replacement basis without adversely affecting body weight or feed efficiency. Moreover, RSM can replace all of the SM in such diets without adverse effects on biological performance provided energy, protein and amino acid differences are compensated. The calculated amino acid content of the diets indicate that FM is a complementary source of dietary protein in diets containing high levels of RSM.

Effects of dietary protein intake on vasoactive hormones

1990 ◽  
Vol 258 (5) ◽  
pp. R1095-R1100 ◽  
Author(s):  
B. S. Daniels ◽  
T. H. Hostetter
Keyword(s):  
Amino Acid ◽  
Dietary Protein ◽  
Protein Intake ◽  
High Protein Diet ◽  
High Protein ◽  
Protein Diet ◽  
Plasma Amino Acid ◽  
Dietary Protein Intake ◽  
Vasoactive Hormones ◽  
Amino Acid Levels

Vasoactive hormonal response to two levels of dietary protein intake was studied in seven healthy adult volunteers. The subjects were randomly placed on a 2-g.kg-1.day-1 (high) or 0.55-g.kg-1.day-1 (low) diet using a crossover design and were studied on the morning of the 5th day and again after 24 h of indomethacin treatment. Plasma renin activity (PRA), aldosterone, vasopressin, and urinary excretion of 6-ketoprostaglandin F1 alpha (PGF1 alpha) were significantly higher on the high-protein diet despite constancy of body weight, blood pressure, pulse, urinary sodium and potassium excretion, and plasma amino acid levels. After treatment with cyclooxygenase inhibitor indomethacin, 6-keto-PGF1 alpha excretion was equalized, but the elevated PRA and aldosterone levels persisted on the high-protein diet, suggesting that PRA and aldosterone elevations do not depend entirely on prostanoid release. We conclude that chronic augmentation of dietary protein intake is accompanied by alterations of vasoactive hormones, which persist for up to 10 h postprandially and are independent of elevated plasma amino acid levels. Such hormonal alterations may mediate some of the dietary protein-mediated changes in renal hemodynamics.

Dependence of intestinal amino acid uptake on dietary protein or amino acid levels

1987 ◽  
Vol 252 (5) ◽  
pp. G614-G625 ◽  
Author(s):  
W. H. Karasov ◽  
D. H. Solberg ◽  
J. M. Diamond
Keyword(s):  
Amino Acid ◽  
Brush Border ◽  
Dietary Protein ◽  
Brush Border Membrane ◽  
Amino Acid Uptake ◽  
Multiple Roles ◽  
Acid Uptake ◽  
Imino Acid ◽  
Amino Acid Levels ◽  
High Concentrations

To understand how intestinal amino acid (AA) transport is regulated by dietary substrate levels, we measured uptake of seven AAs and glucose across the jejunal brush-border membrane of mice kept on one of three isocaloric rations differing in nitrogen content. In the high-protein ration, uptake increased by 77-81% for the nonessential, less toxic AAs, proline, and aspartate but only by 32-61% for the more toxic essential AAs tested. In the nitrogen-deficient ration, uptake decreased for the nonessential aspartate and proline but stayed constant or increased for essential AAs and for the nonessential alanine. These patterns imply independent regulation of the intestine's various AA transporters. With decreasing dietary AA (or protein), the imino acid and acidic AA "private" transporters are repressed, while activities of the basic AA transporter and the neutral AA "public" transporter decrease to an asymptote or else go through a minimum. These regulatory patterns can be understood as a compromise among conflicting constraints imposed by protein's multiple roles as a source of calories, nitrogen, and essential AAs and by the toxicity of essential AAs at high concentrations.

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