324 Diurnal ambient temperature variations in warm climate regions affect the serum concentrations of free amino acids in growing pigs

2017 ◽  
Vol 95 (suppl_2) ◽  
pp. 157-157
Author(s):  
A. Morales ◽  
N. Ibarra ◽  
S. Espinoza ◽  
F. Reyes ◽  
E. Avelar ◽  
...  
Keyword(s):  
Amino Acids ◽  
Ambient Temperature ◽  
Free Amino Acids ◽  
Free Amino ◽  
Growing Pigs ◽  
Serum Concentrations ◽  
Warm Climate ◽  
Temperature Variations

Serum concentrations of free amino acids in growing pigs exposed to diurnal heat stress fluctuations

2017 ◽  
Vol 69 ◽  
pp. 69-75 ◽  
Author(s):  
Miguel Cervantes ◽  
Nely Ibarra ◽  
Nydia Vásquez ◽  
Francisco Reyes ◽  
Ernesto Avelar ◽  
...  
Keyword(s):  
Amino Acids ◽  
Heat Stress ◽  
Free Amino Acids ◽  
Free Amino ◽  
Growing Pigs ◽  
Serum Concentrations

336 Heat stress affects the serum concentrations of free amino acids in growing pigs

2016 ◽  
Vol 94 (suppl_2) ◽  
pp. 158-158
Author(s):  
A. Morales ◽  
M. Cota ◽  
N. Ibarra ◽  
N. Arce ◽  
J. K. Htoo ◽  
...  
Keyword(s):  
Amino Acids ◽  
Heat Stress ◽  
Free Amino Acids ◽  
Free Amino ◽  
Growing Pigs ◽  
Serum Concentrations

Effect of heat stress on the serum concentrations of free amino acids and some of their metabolites in growing pigs1

2016 ◽  
Vol 94 (7) ◽  
pp. 2835-2842 ◽  
Author(s):  
A. Morales ◽  
S. E. M. Cota ◽  
N. O. Ibarra ◽  
N. Arce ◽  
J. K. Htoo ◽  
...  
Keyword(s):  
Amino Acids ◽  
Heat Stress ◽  
Free Amino Acids ◽  
Free Amino ◽  
Serum Concentrations

DETERMINATION OF THE METHIONINE REQUIREMENT OF GROWING PIGS USING SERUM FREE AMINO ACIDS

1972 ◽  
Vol 52 (1) ◽  
pp. 163-169 ◽  
Author(s):  
M. O. KEITH ◽  
D. A. CHRISTENSEN ◽  
B. D. OWEN
Keyword(s):  
Amino Acids ◽  
Body Weight ◽  
Free Amino Acids ◽  
Free Amino ◽  
Latin Square ◽  
Growing Pigs ◽  
Performance Data ◽  
Serum Free ◽  
Methionine Concentration

Six littermate Yorkshire gilts averaging 18 kg body weight were fed a semipurified diet containing six graded levels of methionine during six 4-day feeding periods in a Latin square design. Serum methionine concentrations were determined at the end of each period. Plotting serum methionine concentration against dietary methionine intake showed the methionine requirement to be 0.46% of the diet; this estimate was substantiated by animal performance data.

Free amino-nitrogen exchange across the hindquarters of fed and fasted sheep and pigs

1982 ◽  
Vol 99 (1) ◽  
pp. 91-104 ◽  
Author(s):  
Margaret I. Chalmers ◽  
I. Grant ◽  
F. White
Keyword(s):  
Amino Acids ◽  
Whole Blood ◽  
Free Amino Acids ◽  
Free Amino ◽  
Venous Blood ◽  
Amino Nitrogen ◽  
Growing Pigs ◽  
Net Uptake ◽  
Net Flux ◽  
Nitrogen Exchange

SUMMARYFree amino·N estimations were used to monitor the movement of free amino acids in blood passing through the hindquarters of sheep and growing pigs. The net uptakeor release of free amino·N was calculated from arterio-venous differences in the concentration of free amino·N measured in whole blood and plasma at short intervals of time.In both species the net change was an apparent release of free amino·N into venous blood. The release increased on fasting. Net uptake of free amino·N from blood was occasionally found at single sampling times due to loss from the cell compartment in sheep and from the plasma compartment in pigs. The uptake measured in whole blood was always less than in a single compartment of blood. The greatest fluctuation in free amino·N concentration occurred in the cells of aorta blood.It is concluded that both blood cells and plasma have independent roles in the net flux of free amino·N requiring determinations of amino acids in both whole blood and plasma to describe the exchange of blood free amino acids with tissue. A negative arteriovenous difference of free amino·N in blood across skeletal muscle is normal for healthy well-fed animals. Fasting increases the negativity.

scholarly journals Extra dietary protein-bound or free amino acids differently affect the serum concentrations of free amino acids in heat-stressed pigs1

2019 ◽  
Vol 97 (4) ◽  
pp. 1734-1744 ◽  
Author(s):  
Adriana Morales ◽  
Miguel Chávez ◽  
Nydia Vásquez ◽  
Lucero Camacho ◽  
Ernesto Avelar ◽  
...  
Keyword(s):  
Amino Acids ◽  
Dietary Protein ◽  
Free Amino Acids ◽  
Free Amino ◽  
Serum Concentrations

DIETARY EFFECTS ON THE CONCENTRATIONS OF FREE AMINO ACIDS IN PLASMA AND WHOLE BLOOD OF PIGS

1977 ◽  
Vol 57 (2) ◽  
pp. 295-303 ◽  
Author(s):  
M. O. KEITH ◽  
H. G. BOTTING ◽  
R. W. PEACE
Keyword(s):  
Amino Acids ◽  
Whole Blood ◽  
Free Amino Acids ◽  
Free Amino ◽  
Urea Cycle ◽  
Plasma Concentrations ◽  
Growing Pigs ◽  
Blood Concentrations ◽  
Natural Diet ◽  
Accurate Reflection

The concentrations of free amino acids in plasma and whole blood of growing pigs were examined following an overnight fast and at 2 and 5 h after eating either a semipurified diet containing casein or a natural grain-based commercial ration. The plasma:whole blood (P:B) ratio of the concentrations of threonine, proline and tyrosine changed significantly (P < 0.01) with time after feeding; methionine and lysine showed the same effect depending upon which diet was fed. Aspartic acid, citrulline, ornithine and histidine tended to show similar responses. No effect was observed on the ratios for other amino acids. Treatment effects on plasma:erythrocyte ratios were similar to those on P:B ratios. The semipurified diet resulted in increasing plasma and blood concentrations of most amino acids for 5 h after feeding whereas concentrations of most amino acids decreased after 2 h when the natural diet was fed. The natural diet appeared to stimulate greater urea cycle activity according to plasma concentrations of urea cycle metabolites. The data indicate that for some amino acids metabolic state affects plasma and whole blood concentrations differently, especially when a semipurified diet is fed. Whole blood concentrations of these amino acids are not an accurate reflection of plasma concentrations.

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