Effects of dietary energy levels on Pectoralis major mixed muscle protein turnover and body composition in two broiler lines housed in different grow‐out environments

2021 ◽  
Author(s):  
Pramir Maharjan ◽  
Garret Mullenix ◽  
Katie Hilton ◽  
Jordan Weil ◽  
Antonio Beitia ◽  
...  
Keyword(s):  
Body Composition ◽  
Protein Turnover ◽  
Muscle Protein ◽  
Energy Levels ◽  
Pectoralis Major ◽  
Dietary Energy ◽  
Muscle Protein Turnover

β-Hydroxy-β-Methylbutyrate (HMB) Supplementation Does Not Affect Changes in Strength or Body Composition during Resistance Training in Trained Men

2001 ◽  
Vol 11 (3) ◽  
pp. 384-396 ◽  
Author(s):  
Gary Slater ◽  
David Jenkins ◽  
Peter Logan ◽  
Hamilton Lee ◽  
Matthew Vukovich ◽  
...  
Keyword(s):  
Body Composition ◽  
Resistance Training ◽  
Muscle Damage ◽  
Protein Turnover ◽  
Dietary Intervention ◽  
Muscle Protein ◽  
Double Blind ◽  
Male Athletes ◽  
Muscle Protein Turnover ◽  
Significant Strength

This investigation evaluated the effects of oral β-Hydroxy-β-Methylbutyrate (HMB) supplementation on training responses in resistance-trained male athletes who were randomly administered HMB in standard encapsulation (SH), HMB in time release capsule (TRH), or placebo (P) in a double-blind fashion. Subjects ingested 3 g · day−1 of HMB or placebo for 6 weeks. Tests were conducted pre-supplementation and following 3 and 6 weeks of supplementation. The testing battery assessed body mass, body composition (using dual energy x-ray absorptiometry), and 3-repetition maximum isoinertial strength, plus biochemical parameters, including markers of muscle damage and muscle protein turnover. While the training and dietary intervention of the investigation resulted in significant strength gains (p < .001) and an increase in total lean mass (p = .01), HMB administration had no influence on these variables. Likewise, biochemical markers of muscle protein turnover and muscle damage were also unaffected by HMB supplementation. The data indicate that 6 weeks of HMB supplementation in either SH or TRH form does not influence changes in strength and body composition in response to resistance training in strength-trained athletes.

Skeletal and cardiac muscle protein turnover during cold acclimation in young rats

2000 ◽  
Vol 278 (3) ◽  
pp. R705-R711 ◽  
Author(s):  
T. A. McAllister ◽  
J. R. Thompson ◽  
S. E. Samuels
Keyword(s):  
Skeletal Muscle ◽  
Protein Synthesis ◽  
Cardiac Muscle ◽  
Cold Acclimation ◽  
Protein Turnover ◽  
Muscle Protein ◽  
Muscle Protein Turnover ◽  
Protein Mass ◽  
The Absolute

The effect of long-term cold exposure on skeletal and cardiac muscle protein turnover was investigated in young growing animals. Two groups of 36 male 28-day-old rats were maintained at either 5°C (cold) or 25°C (control). Rates of protein synthesis and degradation were measured in vivo on days 5, 10, 15, and 20. Protein mass by day 20 was ∼28% lower in skeletal muscle (gastrocnemius and soleus) and ∼24% higher in heart in cold compared with control rats ( P < 0.05). In skeletal muscle, the fractional rates of protein synthesis ( k syn) and degradation ( k deg) were not significantly different between cold and control rats, although k syn was lower (approximately −26%) in cold rats on day 5; consequent to the lower protein mass, the absolute rates of protein synthesis (approximately −21%; P < 0.05) and degradation (approximately −13%; P < 0.1) were lower in cold compared with control rats. In heart, overall, k syn(approximately +12%; P < 0.1) and k deg(approximately +22%; P < 0.05) were higher in cold compared with control rats; consequently, the absolute rates of synthesis (approximately +44%) and degradation (approximately +54%) were higher in cold compared with control rats ( P < 0.05). Plasma triiodothyronine concentration was higher ( P < 0.05) in cold compared with control rats. These data indicate that long-term cold acclimation in skeletal muscle is associated with the establishment of a new homeostasis in protein turnover with decreased protein mass and normal fractional rates of protein turnover. In heart, unlike skeletal muscle, rates of protein turnover did not appear to immediately return to normal as increased rates of protein turnover were observed beyond day 5. These data also indicate that increased rates of protein turnover in skeletal muscle are unlikely to contribute to increased metabolic heat production during cold acclimation.

scholarly journals Reduction of muscle protein turnover in rats by a high protein diet.

1987 ◽  
Vol 51 (1) ◽  
pp. 261-262
Author(s):  
Ryuhei FUNABUCI ◽  
Kouichi SAITO ◽  
Kazumi YAGASAKI
Keyword(s):  
Protein Turnover ◽  
Muscle Protein ◽  
High Protein Diet ◽  
High Protein ◽  
Protein Diet ◽  
Muscle Protein Turnover

scholarly journals The effect of four different feeding regimens from rearing period to sexual maturity on breast muscle protein turnover in broiler breeder parent stock

2017 ◽  
Vol 96 (5) ◽  
pp. 1219-1227 ◽  
Author(s):  
Karen Vignale ◽  
Justina V. Caldas ◽  
Judy A. England ◽  
Nirun Boonsinchai ◽  
Phiphob Sodsee ◽  
...  
Keyword(s):  
Protein Turnover ◽  
Sexual Maturity ◽  
Muscle Protein ◽  
Breast Muscle ◽  
Broiler Breeder ◽  
Muscle Protein Turnover ◽  
Parent Stock

Expression of genes related to the regulation of muscle protein turnover in Angus and Nellore bulls1

2016 ◽  
Vol 94 (4) ◽  
pp. 1472-1481
Author(s):  
K. C. Busato ◽  
R. A. Gomes ◽  
M. M. Ladeira ◽  
M. S. Duarte ◽  
N. C. Freitas ◽  
...  
Keyword(s):  
Protein Turnover ◽  
Muscle Protein ◽  
Muscle Protein Turnover ◽  
Expression Of Genes

Influence of sepsis in rats on muscle protein turnover in vivo and in tissue incubated under different in vitro conditions

Metabolism ◽  
1991 ◽  
Vol 40 (3) ◽  
pp. 247-251 ◽  
Author(s):  
Marianne Hall-Angerås ◽  
Ulf Angerås ◽  
Daniel von Allmen ◽  
Takashi Higashiguchi ◽  
Oded Zamir ◽  
...  
Keyword(s):  
Protein Turnover ◽  
Muscle Protein ◽  
Muscle Protein Turnover
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