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

scholarly journals Increased dietary protein or free amino acids supply for heat stress pigs: effect on performance and carcass traits

2018 ◽  
Vol 96 (4) ◽  
pp. 1419-1429 ◽  
Author(s):  
A Morales ◽  
M Chávez ◽  
N Vásquez ◽  
J K Htoo ◽  
L Buenabad ◽  
...  
Keyword(s):  
Amino Acids ◽  
Heat Stress ◽  
Dietary Protein ◽  
Free Amino Acids ◽  
Free Amino ◽  
Carcass Traits

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.

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