scholarly journals Optimizing Egg Mass with Amino Acid Supplementation of a Low-Protein Diet

1993 ◽  
Vol 72 (10) ◽  
pp. 1892-1896 ◽  
Author(s):  
R.H. HARMS ◽  
G.B. RUSSELL
Keyword(s):  
Amino Acid ◽  
Protein Diet ◽  
Low Protein Diet ◽  
Egg Mass ◽  
Amino Acid Supplementation ◽  
Acid Supplementation ◽  
Low Protein

scholarly journals The effect of selective amino acid supplementation on calcium absorption during a low protein diet

2013 ◽  
Vol 27 (S1) ◽  
Author(s):  
Jessica D Bihuniak ◽  
Rebecca R Sullivan ◽  
Christine A Simpson ◽  
Donna M Caseria ◽  
Kimberly O O'Brien ◽  
...  
Keyword(s):  
Amino Acid ◽  
Calcium Absorption ◽  
Protein Diet ◽  
Low Protein Diet ◽  
Amino Acid Supplementation ◽  
Acid Supplementation ◽  
Low Protein

scholarly journals Performance of Broilers Fed Low Protein Diets with Lysine and Methionine Supplements

2006 ◽  
Vol 6 (1) ◽  
pp. 47-59
Author(s):  
Nancy Montilla ◽  
◽  
Lolito Bestil ◽  
Sulpecio Bantugan ◽  
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Protein Content ◽  
High Protein Diet ◽  
Protein Diet ◽  
Amino Acid Supplementation ◽  
Feed Conversion ◽  
Broiler Performance ◽  
Acid Supplementation ◽  
Low Protein

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.

mRNA expression of ANT genes, productive performance and nitrogen excretion of laying hen by feeding low protein diets and amino acid supplementation

2019 ◽  
Author(s):  
W. Loongyai ◽  
S. Suptavitanakit ◽  
C. Rakangthong ◽  
C. Bunchasak
Keyword(s):  
Amino Acid ◽  
Egg Production ◽  
Egg Quality ◽  
Nitrogen Retention ◽  
Production Performance ◽  
Nitrogen Excretion ◽  
Egg Mass ◽  
Amino Acid Supplementation ◽  
Acid Supplementation ◽  
Low Protein

The study investigated the effects of low protein diet and amino acid supplementation on production performance of laying hens from 49–57 weeks. A total of 135 chickens were divided into 3 groups: 17%CP, 15%CP and 15%CP supplemented with amino acid (AA). The results showed that the 15% CP group consumed less feed (P less than 0.01). Adding AA to 15%CP improved feed intake, Met intake, BWG, egg mass (P less than 0.01) and egg production (P less than 0.05), while FCR and egg quality were not affected. The percentage of abdominal fat and ANT gene expression were highest in the 15%CP + AA group (P less than 0.05). Nitrogen retention in manure of 15% CP + AA hens was lower than in 17%CP (P less tahn 0.01). These results indicated that the reduced-CP diets supplemented with AA improved production performances and decreased nitrogen excretion.

scholarly journals The relative effects of a low-protein-high-carbohydrate diet on the free amino acid composition of liver and muscle

1976 ◽  
Vol 36 (2) ◽  
pp. 219-230
Author(s):  
P. G. Lunn ◽  
R. G. Whitehead ◽  
B. A. Baker
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Free Amino Acid ◽  
Acid Concentration ◽  
Free Amino ◽  
Essential Amino Acids ◽  
Protein Diet ◽  
Low Protein Diet ◽  
Total Amino Acid ◽  
Low Protein

1. Free amino acid concentrations in the plasma have been compared with those in liver and quadriceps muscle, in rats fed on diets containing 209 (control) and 31 (low-protein) g protein/kg. The effects of the low-protein diet on diurnal variations in these values were also measured.2. In the plasma, the total amino acid concentration was significantly lower in animals given the low-protein diet, at all times of day except 12.00 hours. In the liver, and to a lesser extent the muscle, total amino acid concentration was maintained.3. In the control animals, diurnal variation in the concentrations of both essential and non-essential amino acids was very similar in plasma, liver and muscle. In animals given the low-protein diet, although the same diurnal pattern was maintained for non-essential amino acids, that occurring among the essential amino acids had virtually disappeared.4. In plasma, the mean 24 h concentration of essential amino acids decreased from 24· mmol/l in control animals to only 1·29 mmol/l in the low-protein-fed animals. Concentrations in muscle and liver were reduced by a similar proportion (from 8·6 to 5·56 μmol/g and from 8·67 to 5·05 μmol/g respectively). Conversely the concentrations of non-essential amino acids in animals given the low-protein diet were increased in plasma (from 1·53 to 2·00 mmol/l), muscle (from 12·5 to 14·3 μmol/g), and liver (from 16·8 to 20·5 μmol/g), muscle showing the lowest increase.5. With the exceptions of lysine, threonine, cystine and tyrosine, the concentrations of all other essential amino acids were reduced more in liver than in muscle. The relationship between this and the failure to maintain plasma albumin concentrations is discussed.

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