The optimum dietary amino acid pattern for growing pigs

1989 ◽  
Vol 62 (2) ◽  
pp. 255-267 ◽  
Author(s):  
M. F. Fuller ◽  
R. McWilliam ◽  
T. C. Wang ◽  
L. R. Giles
Keyword(s):  
Amino Acid ◽  
Nitrogen Retention ◽  
Growing Pigs ◽  
Regression Coefficients ◽  
Body Protein ◽  
Acid Intake ◽  
Dietary Amino Acid ◽  
Amino Acid Requirements ◽  
Amino Acid Intake ◽  
The Relationship

Experiments were made to estimate separately the amino acid requirements of growing pigs for maintenance and for protein accretion. The relationship between nitrogen retention and amino acid intake was estimated for each essential amino acid (except histidine) by giving, at rates of N intake of 0.25 and 2.0 g/kg body-weight (W)0.75 per d, diets in which one amino acid was made specifically deficient. From the regression coefficients it was calculated that, for the accretion of 1 g body protein, the dietary amino acid requirements were (mg) threonine 47, valine 53, methionine+cystine 36, methionine 19, isoleucine 43, leucine 78, phenylalanine+tyrosine 84, phenylalanine 41, lysine 68 and tryptophan 12. The daily amino acid requirements for N equilibrium were also estimated. From the relationship between N retention and amino acid intake the daily amino acid requirements for N equilibrium were estimated to be (mg/kg W0.75 per d) threonine 53, valine 20, methionine+cystine 49, methionine 9, isoleucine 16, leucine 23, phenylalanine+tyrosine 37, phenylalanine 18, lysine 36 and tryptophan 11. It was estimated that both for maintenance and for protein accretion tyrosine could provide close to half the total phenylalanine+tyrosine needs. Cystine could supply close to half the total sulphur amino acid needs for protein accretion but 0.8 of the needs for maintenance.

scholarly journals Are Dietary Amino Acids or Protein Quality Associated with Infant Length Gain from 6 to 12 Months in Rural Malawi? (P10-010-19)

2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Andrew Matchado ◽  
Kathryn Dewey ◽  
Christine Stewart ◽  
Per Ashorn ◽  
Ulla Ashorn ◽  
...  
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Breast Milk ◽  
Protein Quality ◽  
Complementary Food ◽  
Complementary Foods ◽  
Acid Intake ◽  
Dietary Amino Acid ◽  
Amino Acid Intake ◽  
Length Gain

Abstract Objectives 1) to estimate the probability of inadequate amino acid intake among infants 9–10 months of age in rural Malawi 2) to evaluate whether dietary amino acid intake or protein quality are associated with length gain from 6 to 12 months of age Methods We assessed total amino acid intake from breast milk and complementary foods in 285 infants. Breast milk intake and complementary foods were estimated using dose-to-mother deuterium oxide dilution method and repeat 4-pass interactive 24-hour recall interviews, respectively. Amino acid composition values were taken from FAO human milk profile, Tanzania Food Composition table and International Minilist. Protein quality was estimated using Digestible Indispensable Amino Acid Score (DIAAS). Probability of intake below Estimated Average Requirement (EAR) for each amino acid was estimated using National Cancer Institute (NCI) method. We estimated protein quality of complementary food using median DIAAS. We assumed a DIAAS of ≥0.75 to represent a diet or food with good protein quality. Relationships between amino acid intake or protein quality with length gain were assessed using regression models. Length was measured at 6 and 12 months of age and length for age z-score (LAZ) velocity was calculated (ΔLAZ/months). Results The probability of inadequate amino acid intake from breast milk and complementary food that included a lipid-based nutrient supplement (LNS) was 3% for lysine, 0% for tryptophan, threonine, valine, histidine, isoleucine, leucine, sulfur containing amino acids (SAA), and aromatic amino acids (AAA). Without LNS, the probability was 7% for lysine and 0–2% for the other amino acids. The median (interquartile range) DIAAS for complementary food with and without LNS was 0.70 (0.28) and 0.64 (0.32), respectively. Dietary amino acid intake and protein quality were not significantly associated with length gain velocity from 6 to 12 months even after adjusting for confounding factors. Conclusions The prevalence of inadequate amino acid intake in 9–10 months old infants in rural Malawi is very low. However, in conditions of frequent clinical or sub-clinical infections this situation may be different. Linear growth at 6–12 months does not appear to be limited by dietary amino acid intake or protein quality in this setting. Funding Sources The Bill & Melinda Gates Foundation.

An optimal dietary amino acid pattern for growing pigs

1997 ◽  
Vol 1987 ◽  
pp. 91-91 ◽  
Author(s):  
T. C. Wang ◽  
M. F. Fuller
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Nitrogen Retention ◽  
Essential Amino Acids ◽  
Growing Pigs ◽  
Amino Acid Pattern ◽  
Dietary Amino Acid ◽  
Ideal Protein ◽  
Limiting Amino Acid ◽  
The Ideal

An animal's rate of protein accretion (or nitrogen retention) is determined by the most deficient (or first limiting) amino acid in the diet, in a perfectly balanced (or ideal) protein all essential amino acids and the sum of the non-essential amino acids are equally limiting. If a dietary protein had any amino acids in excess of the ideal pattern, then the removal of any of the excess should not affect nitrogen retention. This principle was used to determine the ideal dietary amino acid pattern for growing pigs.Three nitrogen balance trials were carried out with a total of 64 gilts of weight from 30 to 55 kg. Casein and a mixture of amino acids were used in the semi-purified diets. The animals were given the diets at the rate of 93 g/kg BW0.75/d in three equal meals mixed with 0.3 L water. The feeding times were 08.30, 12.30 and 17.30. All pigs received their experimental diets for 7 days, made up of 3 days preliminary and a 4-day collection, except that the preliminary period before the first collection in the first period was 7 days. Before the first collection bladder catheters were introduced.

Individual response of growing pigs to sulphur amino acid intake

2007 ◽  
Vol 0 (0) ◽  
pp. 070619032309005-???
Author(s):  
J. Heger ◽  
L. Křížová ◽  
M. Šustala ◽  
S. Nitrayová ◽  
P. Patráš ◽  
...  
Keyword(s):  
Amino Acid ◽  
Growing Pigs ◽  
Individual Response ◽  
Sulphur Amino Acid ◽  
Acid Intake ◽  
Amino Acid Intake

Restricting sulfur amino acid intake in growing pigs challenged with lipopolysaccharides decreases plasma protein and albumin synthesis

2013 ◽  
Vol 93 (4) ◽  
pp. 505-515 ◽  
Author(s):  
N. Litvak ◽  
J. K. Htoo ◽  
C. F. M. de Lange
Keyword(s):  
Immune Response ◽  
Amino Acid ◽  
Plasma Protein ◽  
Growing Pigs ◽  
Sulfur Amino Acid ◽  
Albumin Synthesis ◽  
Plasma Albumin ◽  
Acid Intake ◽  
Lps Challenge ◽  
Amino Acid Intake

Litvak, N., Htoo, J. K. and de Lange, C. F. M. 2013. Restricting sulfur amino acid intake in growing pigs challenged with lipopolysaccharides decreases plasma protein and albumin synthesis. Can. J. Anim. Sci. 93: 505–515. Chronic subclinical levels of disease occur frequently in swine production and compromise nutrient utilization efficiency. Methionine and cysteine (M+C) are involved in the pig's response to immune system stimulation (ISS), acting as substrates for the synthesis of compounds involved in the immune response, such as acute phase proteins (APP). This study was conducted to determine the impact of ISS with lipopolysaccharide (LPS) and M+C intake (high vs. low; 4.0 vs. 2.2 g d−1) on the fractional synthesis rate (FSR) of plasma albumin and fibrinogen, as well as protein in plasma and various tissues of starter pigs. Fifteen pigs (9.8±1.4 kg body weight) were allotted to one of three treatments: (1) Control (LPS− and high M+C), (2) LPS+ and high M+C, or (3) LPS+ and low M+C. Pigs were given intramuscular injections of increasing doses of LPS 1 and 3 d before determining FSR using an intravenous infusion of a flooding dose of L-[ring−1H5]-phenylalanine. Plasma levels of APP were not affected by the LPS challenge (P>0.10); only plasma albumin levels decreased with reduced M+C intake (P=0.02). Total plasma protein FSR was increased during the LPS challenge (50.3 vs. 56.9% d−1, SEM = 1.6; P=0.01). Albumin FSR was not affected by an LPS challenge (P>0.10), but decreased with reduced M+C intake during the LPS challenge (49.5 vs. 41.9% d−1, SEM = 1.6; P=0.005). Spleen protein FSR tended to increase during the LPS challenge (P=0.08). There were no treatment effects on protein FSR in liver, small intestine, loin or plasma fibrinogen (P>0.10). Restricting M+C intake during a LPS challenge decreases albumin synthesis and tends to reduce plasma protein synthesis, implicating M+C as important nutrients involved in the immune response.

scholarly journals Estimation of Dietary Amino Acid Intake and Independent Correlates of Skeletal Muscle Mass Index among Korean Adults

Nutrients ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 1043 ◽  
Author(s):  
Minjeong Chae ◽  
Hyoungsu Park ◽  
Kyong Park
Keyword(s):  
Skeletal Muscle ◽  
Amino Acid ◽  
Muscle Mass ◽  
Skeletal Muscle Mass ◽  
Linear Regression Analysis ◽  
Multivariate Linear Regression Analysis ◽  
Acid Intake ◽  
Dietary Amino Acid ◽  
Amino Acid Intake ◽  
Skeletal Muscle Mass Index

The aim of this study was to develop a database to identify dietary amino acid intake levels, and to determine whether any amino acid groups were independently correlated with skeletal muscle mass index (SMI). We used data from the Korea National Health and Nutrition Examination Survey 2008–2011, and a total of 3292 participants aged 50–64 years were included in the analysis. Dietary data were obtained using the 24 h recall method. Data regarding dietary amino acid intake was assessed using the computer-aided nutritional analysis program 4.0 published by the Korean Nutrition Society. Multivariate linear regression analysis was used to identify independent correlates of SMI. The major food group that contributed the highest essential amino acid intake was grain and grain products (histidine 25.5%, isoleucine 43.9%, leucine 44.2%, methionine 31.0%, phenylalanine 44.8%, tryptophan 26.4%, and valine 50.8%). Higher SMI was independently associated with sex (men), lower age and body mass index, higher levels of physical activity, and a higher intake of energy and branched-chain amino acids. These results are expected to be used as a basis for developing dietary amino acid intake guidelines for Koreans.

scholarly journals Estimating Amino Acid Requirements in Real-Time for Precision-Fed Pigs: The Challenge of Variability among Individuals

Animals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3354
Author(s):  
Aline Remus ◽  
Luciano Hauschild ◽  
Marie-Pierre Létourneau-Montminy ◽  
Candido Pomar
Keyword(s):  
Cluster Analysis ◽  
Amino Acid ◽  
Interindividual Variability ◽  
Growing Pigs ◽  
Future Research ◽  
Nutrient Efficiency ◽  
Protein Deposition ◽  
Amino Acid Requirements ◽  
Amino Acid Intake ◽  
Similar Amino Acid

This study aimed to measure protein deposition (PD) in pigs fed with daily tailored diets where either dietary lysine (Lys) or threonine (Thr) were provided at independent levels (ignoring an ideal ratio). A total of 95 growing pigs (35 kg body weight (BW)) with electronic ear tags granting them access to automatic feeders were randomly assigned to treatments. The setup was an unbalanced 2 × 5 factorial arrangement with Lys and Thr provided at five levels (i.e., 60%, 80%, 100%, 120%, and 140% of the estimated individual requirements of Lys and Thr), resulting in 25 treatments for 21 days. The observed PD variation to Lys and Thr provisions was large, with Lys and Thr intake explaining only 11% of the variation. Cluster analysis discriminated pigs with low (167 g/d, n = 16), medium (191 g/d, n = 38), and high (213 g/d, n = 37) PD, but with a similar amino acid intake. Differences in PD were associated with differences in nutrient efficiency of utilization. Providing Lys and Thr in a factorial mode, ignoring an ideal ratio, did not decrease the variability in PD. Future research efforts should focus on identifying and investigating the sources of interindividual variability—a necessary step before final recommendations can be made for AA in precision-fed pigs.

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