scholarly journals Amino acid requirements in relation to health status in growing and finishing pigs

2019 ◽  
Author(s):  
C.M.C. van der Peet-Schwering ◽  
◽  
S.J. Koopmans ◽  
A.J.M. Jansman ◽  
Keyword(s):  
Health Status ◽  
Amino Acid ◽  
Finishing Pigs ◽  
Amino Acid Requirements

scholarly journals Toward better estimates of the real-time individual amino acid requirements of growing-finishing pigs showing deviations from their typical feeding patterns

animal ◽  
2020 ◽  
Vol 14 ◽  
pp. s371-s381
Author(s):  
L. Hauschild ◽  
A.R. Kristensen ◽  
I. Andretta ◽  
A. Remus ◽  
L.S. Santos ◽  
...  
Keyword(s):  
Amino Acid ◽  
Real Time ◽  
Finishing Pigs ◽  
Individual Amino Acid ◽  
Feeding Patterns ◽  
The Real ◽  
Amino Acid Requirements

scholarly journals THE AMINO ACID REQUIREMENTS OF MAN

1955 ◽  
Vol 216 (2) ◽  
pp. 763-773
Author(s):  
William C. Rose ◽  
Robert L. Wixom
Keyword(s):  
Amino Acid ◽  
Amino Acid Requirements

scholarly journals THE AMINO ACID REQUIREMENTS OF MAN

1955 ◽  
Vol 217 (1) ◽  
pp. 95-101
Author(s):  
William C. Rose ◽  
Robert L. Wixom
Keyword(s):  
Amino Acid ◽  
Amino Acid Requirements

scholarly journals THE AMINO ACID REQUIREMENTS OF MAN

1954 ◽  
Vol 206 (1) ◽  
pp. 421-430 ◽  
Author(s):  
William C. Rose ◽  
William J. Haines ◽  
Donald T. Warner
Keyword(s):  
Amino Acid ◽  
Amino Acid Requirements

scholarly journals PSXI-31 Program Chair Poster Pick: Determination of the threonine requirement in adult and senior Labrador Retrievers using the indicator amino acid oxidation technique

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 321-322
Author(s):  
Jordan T Weil ◽  
Jessica L Varney ◽  
Jason W Fowler ◽  
Craig N Coon
Keyword(s):  
Amino Acid ◽  
Control Diet ◽  
Genetic Selection ◽  
Isotope Ratio Mass Spectrometry ◽  
Acid Oxidation ◽  
Amino Acid Oxidation ◽  
Amino Acid Requirements ◽  
Indispensable Amino Acids ◽  
Nutrient Profiles ◽  
Labrador Retrievers

Abstract Although nutrient profiles for canines have been developed in the past, the need to update amino acid (AA) requirements has gained importance as genetic selection changes the recommended nutrients. Correctly feeding AA to canines can have enormous effects, considering a deficiency or excess of such nutrient can lead to weight loss, disease, or in some cases, death. Amino acid requirements can be determined through the nitrogen balance or indicator amino acid oxidation (IAAO) methods. In this experiment, the IAAO technique was used to determine the threonine (Thr) requirement in Labrador retrievers. A total of six dogs (6 adult and 6 senior) were subjected to six diets with varying levels of Thr, ranging from deficient to excess. Diets were formulated to 1.6x NRC values for all indispensable amino acids. The control diet was fed for two days, followed by a day in which the test diet was fed, a tracer AA was supplied, and breath samples were collected. On test day, a priming dose of L-[1-13C]phenylalanine (Cambridge Isotope Laboratories, Inc.) based on the subject’s body weight was first supplied, followed by [1-13C]Phe doses every thirty minutes, spanning a four hour period. A respiration mask was placed on each subject every thirty minutes (Oxymax, Columbus Instruments), 13CO2 was collected, and enrichment was determined by isotope ratio mass spectrometry (IRMS). Results for IRMS were converted to atom percent excess (APE) and analyzed using a piecewise model of best fit (JMP® Pro 15). The segmented line regression showed that the Thr mean and population requirements were determined to be 1.21 ± 0.24 and 0.92 ± 0.17 g/1000kcal (mean ± 2SD) for adult and senior dogs, respectively. As the pet food industry becomes more specialized in diets relating to aging, and diseased canines, updating the amino acid requirements related to such animals is increasingly important.

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