Muscle growth and protein degradation during early development in chicks of fast and slow growing strains

Cl, Saunderson; S, Leslie

doi:10.1016/0300-9629(88)91035-3

Cited by 36 publications

(17 citation statements)

References 10 publications

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“…Selection for increased body weight during domestication has also increased the adult Pectoralis weight, but hardly changed its mode of growth (Figure 3). In contrast, in chickens there was only a slight delay in the development of breast and wing muscles at hatching which was eliminated within the rst 2 weeks (Anthony et al, 1988;Saunderson and Leslie, 1988;Ono et al, 1993). A similar relationship was reported for bones (Salomon et al, 1986).…”

Section: Discussionsupporting

confidence: 57%

Muscle growth in wild and domestic ducks

Gille¹,

Salomon²

1998

British Poultry Science

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1. Increases in weight of the M. pectoralis, M. iliotibialis lateralis and M. flexor cruris lateralis were measured in mallards, White Pekins, Muscovies and a Muscovy x White Pekin cross from hatching to 154 days of age. Growth with respect to age was analysed using the Janoschek growth curve. 2. The M. pectoralis was less developed at hatching than both leg muscles. Furthermore, it showed a slower growth to its final weight and a later age at maximum growth than both leg muscles. 3. Pekins exhibited a faster Pectoralis and Iliotibialis lateralis muscle growth than mallards and Muscovies. The latter attained greater weights than Pekins at later ages owing to a higher asymptote. The cross showed the fastest muscle growth. 4. With respect to body weight, the Pectoralis is characterised by isometry followed by strongly positive allometry. This multiphasic allometry implies that relative muscle weights should not be used and the value of the allometric exponent strongly depends on both the beginning and duration of the period of investigation. Leg muscles showed isometric to slightly negative, simple allometry.

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Section: Discussionsupporting

confidence: 57%

Muscle growth in wild and domestic ducks

Gille¹,

Salomon²

1998

British Poultry Science

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“…In comparison with layers, broilers are characterized by a much higher food intake and growth rate (Hocking et al 1997), faster embryo growth rate (Ohta et al 2004 and have higher brain levels of dopamine and dihydroxyphenylacetic acid (Saito et al 2004). In agreement with these results, broilers were also shown to have lower basal metabolic rate (Kuenzel & Kuenzel 1977), physical activity (Saito et al 2004), and protein degradation rate (Saunderson & Leslie 1988). Broilers and layers were found to differ in their patterns of eating behavior (Bokkers & Koene 2003) and in their response to several orexigenic and anorexic peptides applied by i.c.v.…”

Section: Introductionmentioning

confidence: 69%

The melanocortin circuit in obese and lean strains of chicks

Hen

Yosefi

Simchaev

et al. 2006

Journal of Endocrinology

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Agonists of membranal melanocortin 3 and 4 receptors (MC3/4Rs) are known to take part in the complex control mechanism of energy balance. In this study, we compared the physiological response to an exogenous MC3/4R agonist and the hypothalamic expression of proopic melanocortin (POMC) gene, encoding few MC3/4R ligands, between broiler and layer chicken strains. These strains, representing the two most prominent commercial strains of chickens grown for meat (broilers) and egg production (layers), differ in their food intake, fat accumulation, and reproductive performance and, therefore, form a good model of obese and lean phenotypes, respectively. A single i.v. injection of the synthetic peptide melanotan-II (MT-II; 1 mg/kg body weight) into the wing vein of feed-restricted birds led to attenuation of food intake upon exposure to feeding ad libitum in both broiler and layer chickens. A study of the POMC mRNA encoding the two prominent natural MC3/4R agonists, a-MSH and ACTH, also revealed a general similarity between the strains. Under feeding conditions ad libitum, POMC mRNA levels were highly similar in chicks of both strains and this level was significantly reduced upon feed restriction. However, POMC mRNA down-regulation upon feed restriction was more pronounced in layers than in broilers. These results suggest: (i) a role for MC3/4R agonists in the control of appetite; (ii) that the physiological differences between broilers and layers are not related to unresponsiveness of broiler chickens to the satiety signal of MC3/4R ligands. Therefore, these findings suggest that artificial activation of this circuit in broiler chicks could help to accommodate with their agricultural shortcomings of overeating, fattening, and impaired reproduction.

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“…3-MH is a product of myofibrillar protein degradation. 3-MH concentration in muscle, plasma, and urine has been used as an index of muscle turnover in mammals (4,24,76), birds (19,63), and fish (1, 73). 3-MH concentrations were reduced in the 14-day FD group compared with the day 1 group (Table 3).…”

Section: Resultsmentioning

confidence: 99%

Insulin-like growth factor-I and genetic effects on indexes of protein degradation in response to feed deprivation in rainbow trout (Oncorhynchus mykiss)

Cleveland

Weber

Blemings

et al. 2009

American Journal of Physiology-Regulatory, Integrative and Comp

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This study determined the effect of genetic variation, feed deprivation, and insulin-like growth factor-I (IGF-I) on weight loss, plasma IGF-I and growth hormone, and indexes of protein degradation in eight full-sibling families of rainbow trout. After 2 wk of feed deprivation, fish treated with IGF-I lost 16% less (P < 0.05) wet weight than untreated fish. Feed deprivation increased growth hormone (P < 0.05) and decreased IGF-I (P < 0.05), but hormone levels were not altered by IGF-I. Plasma 3-methylhistidine concentrations were not affected by IGF-I but were decreased after 2 wk (P < 0.05) and increased after 4 wk (P < 0.05) of feed deprivation. In white muscle, transcript abundance of genes in the ubiquitin-proteasome, lysosomal, and calpain- and caspase-dependent pathways were affected by feed deprivation (P < 0.05). IGF-I prevented the feed deprivation-induced upregulation of MAFbx (F-box) and cathepsin transcripts and reduced abundance of proteasomal mRNAs (P < 0.05), suggesting that reduction of protein degradation via these pathways may be partially responsible for the IGF-I-induced reduction of weight loss. Family variations in gene expression, IGF-I concentrations, and weight loss during fasting suggest genetic variation in the fasting response, with considerable impact on regulation of proteolytic pathways. These data indicate that nutrient availability, IGF-I, and genetic variation affect weight loss, in part through alterations of proteolytic pathways in rainbow trout, and that regulation of genes within these pathways is coordinated in a way that supports a similar physiological response.

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Muscle growth and protein degradation during early development in chicks of fast and slow growing strains

Cited by 36 publications

References 10 publications

Muscle growth in wild and domestic ducks

Muscle growth in wild and domestic ducks

The melanocortin circuit in obese and lean strains of chicks

Insulin-like growth factor-I and genetic effects on indexes of protein degradation in response to feed deprivation in rainbow trout (Oncorhynchus mykiss)

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