scholarly journals The allometric partition of whole body protein in lean fraction of growing pigs using information from three different datasets

2007 ◽  
Vol 6 (sup1) ◽  
pp. 357-359
Author(s):  
S. Schiavon ◽  
C. Ceolin ◽  
F. Tagliapietra ◽  
L. Bailoni ◽  
A. Piva
Keyword(s):  
Growing Pigs ◽  
Whole Body ◽  
Body Protein

Animal-intrinsic variation in the partitioning of body protein and lipid in growing pigs

2000 ◽  
Vol 70 (1) ◽  
pp. 29-37 ◽  
Author(s):  
P. W. Knap ◽  
H. Jørgensen
Keyword(s):  
Variance Components ◽  
Growing Pigs ◽  
Whole Body ◽  
Body Lipid ◽  
Genetic Determination ◽  
Body Protein ◽  
Lipid Mass ◽  
Cutaneous Tissue ◽  
Yorkshire Pigs ◽  
Total Body

AbstractBody composition in the pig, and its variation, is mostly referred to in terms of body protein and lipid content of the whole body. This study was made to check for animal-intrinsic variation in the partitioning of body protein into protein pools and of body lipid into lipid depots. Results from serial slaughter trials on 316 Danish Landrace and 76 Danish Yorkshire pigs were used to estimate additive genetic and litter-associated variance components for several traits. These traits were total body protein and lipid mass (TOTPROT and TOTLIPD), the proportions of total body protein that are present in the muscles (PROTMUS) or in the (sub-)cutaneous tissue plus bones (connective tissue protein, PROTCON), and the proportions of total body lipid that are present in the (sub-)cutaneous tissue (LIPDSUB), in the muscles (inter- and intramuscular fat, LIPDMUS), or in the bones (LIPDBON). TOTPROT and TOTLIPD were adjusted by regression for body weight; PROTMUS and PROTCON were adjusted for PROTCON, and LIPDSUB, LIPDMUS and LIPDBON were adjusted for TOTLIPD. The pooled estimates (± s.e.) of the degree of genetic determination (the sum of the additive genetic and litter-associated variance components, which approximates the repeatability) of these traits were 0·48 ± 0·19 for TOTPROT, 0·56 ± 0·20 for TOTLIPD, 0·56 ± 0·12 for PROTMUS, 0·57 ± 0·15 for PROTCON, 0·32 ± 0·10 for LIPDMUS, 0·33 ± 0·12 for LIPDSUB, and 0·22 ± 0·10 for LIPDBON. It is concluded that there is animal-intrinsic variation in partitioning of body protein and lipid.

scholarly journals Effects of the amount and quality of dietary protein on nitrogen metabolism and protein turnover of pigs

1987 ◽  
Vol 58 (2) ◽  
pp. 287-300 ◽  
Author(s):  
M. F. Fuller ◽  
P. J. Reeds ◽  
A. Cadenhead ◽  
B. Seve ◽  
T. Preston
Keyword(s):  
Dietary Protein ◽  
Protein Turnover ◽  
Growing Pigs ◽  
Whole Body ◽  
Urea Synthesis ◽  
Total N ◽  
Plasma Urea ◽  
Body Protein ◽  
N Retention

1. The interrelations between protein accretion and whole-body protein turnover were studied by varying the quantity and quality of protein given to growing pigs.2. Diets with 150 or 290g lysine-deficient protein/kg were given in hourly meals, with or without lysine supplementation, to female pigs (mean weight 47 kg).3. After the animals were adapted to the diets, a constant infusion of [14C]urea was given intra-arterially for 30 h, during the last 6 h of which an infusion of [4,5-3H] leucine was also infused at a constant rate. At the same time, yeast-protein labelled with15N was given in the diet for 50 h.4. The rate of urea synthesis was estimated from the specific radioactivity (SR) of plasma urea. The rate of leucine flux was estimated from the SR of plasma leucine. The irrevocable breakdown of leucine was estimated from the3H-labelling of body water. Total N flux was estimated from the16N-labelling of urinary urea.5. Addition of lysine to the low-protein diet significantly increased N retention, with a substantial reduction in leucine breakdown, but there was no significant change in the flux of leucine or of total N.6. Increasing the quantity of the unsupplemented protein also increased N retention significantly, with concomitant increases in leucine breakdown and in the fluxes of leucine and of total N.7. It is concluded that a doubling of protein accretion brought about by the improvement of dietary protein quality is not necessarily associated with an increased rate of whole-body protein turnover.

Influence of dietary lysine level on whole-body protein turnover, plasma IGF-I, GH and insulin concentration in growing pigs

2007 ◽  
Vol 110 (1-2) ◽  
pp. 126-132 ◽  
Author(s):  
Jian-Bo Ren ◽  
Guang-Yong Zhao ◽  
Yuan-Xiao Li ◽  
Qing-Xiang Meng
Keyword(s):  
Protein Turnover ◽  
Growing Pigs ◽  
Insulin Concentration ◽  
Whole Body ◽  
Body Protein ◽  
Igf I

Somatotropin increases protein balance by lowering body protein degradation in fed, growing pigs

2000 ◽  
Vol 278 (3) ◽  
pp. E477-E483 ◽  
Author(s):  
Rhonda C. Vann ◽  
Hanh V. Nguyen ◽  
Peter J. Reeds ◽  
Douglas G. Burrin ◽  
Marta L. Fiorotto ◽  
...  
Keyword(s):  
Protein Synthesis ◽  
Protein Degradation ◽  
Growing Pigs ◽  
Whole Body ◽  
Plasma Urea ◽  
Body Protein ◽  
Fed State ◽  
Protein Deposition ◽  
Leucine Oxidation ◽  
Urea Production

Somatotropin (ST) administration enhances protein deposition in well-nourished, growing animals. To determine whether the anabolic effect is due to an increase in protein synthesis or a decrease in proteolysis, pair-fed, weight-matched (∼20 kg) growing swine were treated with porcine ST (150 μg ⋅ kg− 1 ⋅ day− 1, n = 6) or diluent ( n = 6) for 7 days. Whole body leucine appearance (Ra), nonoxidative leucine disposal (NOLD), urea production, and leucine oxidation, as well as tissue protein synthesis (Ks), were determined in the fed steady state using primed continuous infusions of [13C]leucine, [13C]bicarbonate, and [15N2]urea. ST treatment increased the efficiency with which the diet was used for growth. ST treatment also increased plasma insulin-like growth factor I (+100%) and insulin (+125%) concentrations and decreased plasma urea nitrogen concentrations (−53%). ST-treated pigs had lower leucine Ra (−33%), leucine oxidation (−63%), and urea production (−70%). However, ST treatment altered neither NOLD nor Ks in the longissimus dorsi, semitendinosus, or gastrocnemius muscles, liver, or jejunum. The results suggest that in the fed state, ST treatment of growing swine increases protein deposition primarily through a suppression of protein degradation and amino acid catabolism rather than a stimulation of protein synthesis.

scholarly journals Effects of dietary 20-hydroxyecdysone supplementation on whole-body protein turnover in growing pigs

2020 ◽  
Vol 175 ◽  
pp. 03008
Author(s):  
Olga Obvintseva ◽  
Kenes Erimbetov ◽  
Vitaly Mikhailov
Keyword(s):  
Protein Metabolism ◽  
Protein Turnover ◽  
Live Weight ◽  
Growing Pigs ◽  
The Body ◽  
Biologically Active ◽  
Whole Body ◽  
Body Protein ◽  
Protein Deposition ◽  
Experimental Group

One of the approaches to creating biologically active additives for use in pig breeding can be the use of 20-hydroxyecdysone regulating protein metabolism in piglets. The purpose of the work is to assess the effect of 20-hydroxyecdysone on turnover of protein in piglets. The experiment was carried out on barrows (♂ Danish Yorkshire × ♀ Danish landrace) to achieve a live weight of 53-62 kg. At the age of 60 days, 2 groups of piglets were formed: control and experimental. Piglets of the experimental group were injected with 20-hydroxyecdysone at a dose of 1.6 mg / kg body weight. In piglets of the experimental group, in comparison with the control, a decrease in the excretion of nitrogen in the urine was noted (by 26.8%, P <0.05). Nitrogen deposition was higher in piglets of the experimental group by 19.0% (P <0.001) compared with the control. 20-hydroxyecdysone contributed to increased protein deposition in the body of piglets due to protein synthesizing activity. Thus, the use of 20-hydroxyecdysone in pigs increases the efficiency of using amino acids for the synthesis and deposition of proteins in the body.

scholarly journals Immune System Stimulation Reduces the Efficiency of Whole-Body Protein Deposition and Alters Muscle Fiber Characteristics in Growing Pigs

Animals ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 323 ◽  
Author(s):  
Whitney D. McGilvray ◽  
Bradley Johnson ◽  
Hailey Wooten ◽  
Amanda R. Rakhshandeh ◽  
Anoosh Rakhshandeh
Keyword(s):  
Protein Synthesis ◽  
Immune System ◽  
Muscle Fiber ◽  
Fiber Type ◽  
Growing Pigs ◽  
Whole Body ◽  
Repeated Injection ◽  
Body Protein ◽  
Protein Deposition ◽  
Degradation Rates

The effects of immune system stimulation (ISS), induced by repeated injection of Escherichia coli lipopolysaccharide, on the whole-body protein synthesis versus degradation rates, the efficiency of protein deposition (PD), and muscle fiber characteristics in pigs were evaluated. Twelve growing gilts were assigned to two levels of amino acid intake that was predicted based on the potential of each group’s health status for PD and feed intake. Isotope tracer, nitrogen balance, and immunohistochemical staining techniques were used to determine protein turnover, PD, and muscle fiber characteristics, respectively. Protein synthesis, degradation, and PD were lower in immune-challenged pigs than in control pigs (p < 0.05). Strong tendencies for a higher protein synthesis-to-PD ratio (p = 0.055) and a lower protein synthesis-to-degradation ratio (p = 0.065) were observed in immune-challenged pigs. A decrease in muscle cross-sectional area of fibers and a shift from myosin heavy chain (MHC)-II towards MHC-I fibers (p < 0.05) were observed in immune-challenged pigs. These results indicated that ISS reduces PD not only by suppressing the whole-body protein synthesis and degradation rates, but also by decreasing the efficiency of PD in growing pigs. In addition, ISS induces atrophy in skeletal muscles and favors a slow-twitch oxidative fiber type composition.

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