scholarly journals The Use of Low-Protein, Low-Phosphorus, Amino Acid- and Phytase-Supplemented Diets on Laying Hen Performance and Nitrogen and Phosphorus Excretion

2004 ◽  
Vol 83 (1) ◽  
pp. 75-83 ◽  
Author(s):  
K. Keshavarz ◽  
R. E Austic
1992 ◽  
Vol 2 (7) ◽  
pp. 1178-1185 ◽  
Author(s):  
M Walser ◽  
S Hill ◽  
L Ward

Twelve patients with severe chronic renal failure (average initial GFR, 13 mL/min) were monitored for 4 to 23 months while receiving an essential amino acid supplement and were then switched to a ketoacid supplement for 6 to 40 months, while continuously receiving a very low-protein (0.3 g/kg), low-phosphorus (7 to 9 mg/kg) diet. Urinary urea N excretion indicated that actual dietary protein intake averaged 0.46 g/kg. Progression, estimated as the linear regression slope of radioisotopically determined GFR on time, slowed from -0.46 +/- 0.31 (SD) to -0.24 +/- 0.15 mL/min/month (P = 0.029). Serum urea N, creatinine, phosphate, and uric acid rose significantly as GFR fell; blood pressure, plasma lipids, and urinary urea excretion were unchanged. Urinary 17-hydroxy-corticosteroid excretion decreased 18%, but this change was only marginally significant (P = 0.087). There was no change in plasma or urinary cortisol or urinary aldosterone. Viewed in light of previous evidence that progression seldom slows when treatment remains constant, the results suggest that this ketoacid supplement slows progression by approximately half, compared with an essential amino acid supplement, with no change in diet.


Nature ◽  
1961 ◽  
Vol 189 (4766) ◽  
pp. 759-760 ◽  
Author(s):  
S. HURWITZ ◽  
P. GRIMINGER

Nephron ◽  
1988 ◽  
Vol 49 (3) ◽  
pp. 197-202 ◽  
Author(s):  
G. Barsotti ◽  
L. Moriconi ◽  
A. Cupisti ◽  
L. Dani ◽  
F. Ciardella ◽  
...  

2006 ◽  
Vol 6 (1) ◽  
pp. 47-59
Author(s):  
Nancy Montilla ◽  
◽  
Lolito Bestil ◽  
Sulpecio Bantugan ◽  

A feeding trial with broilers was conducted to evaluate the effects of amino acids (lysine and methionine) supplementation of diets low in protein content on the voluntary intake, feed conversion efficiency, broiler performance, and cost and return of broiler production. Results showed cumulative voluntary feed intake was not significantly affected by lowering the protein content of the diet. Cumulative weight gain of broilers was lower with diet when supplemented iwht lysine and methionine to meet requirements. Birds fed with diets low in protein has less efficient feed converstion, but became comparable with those receiveing diets high in protein when supplemented with amino acids. Feed cost per kilogram broiler produced was not significantly affected by diets used in the study, although the low-protien diet with amino acid supplement had the lowest values. In terms of return above feed and chick cost, broilers fed with high-protein diet had the greatest value, but not significantly different from birds fed with low-protien diet with amino acid supplementation which gave about P10 per bird higher returns than those fed low-protein diet without amino acid supplementation.


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