Possible use of an indicator muscle in future breeding experiments in domestic fowl

Prentis, P. F.; Penney, R.K.; Goldspink, G.

doi:10.1080/13632758408454840

Cited by 14 publications

(6 citation statements)

References 20 publications

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“…The Silky birds had the smallest muscles and these were associated with the smallest myofiber diameter of each type. Breed differences in muscle volume are mainly determined either by myofiber numbers (Mizuno & Hikami 1971) or by myofiber size (Prentis et al . 1984; Horak et al .…”

Section: Discussionmentioning

confidence: 99%

Comparative observations of the growth changes of the histochemical properties and collagen architecture of the iliotibialis lateralis muscle from Silky, layer and meat type cockerels

Oshima

Iwamoto

Shoji

et al. 2007

Animal Science Journal

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Growth-related changes in the histochemical property and collagen architecture of the iliotibialis lateralis muscle were compared among Silky, layer and meat cockerels. Histochemical and immunohistochemical methods were employed to observe the collagen architecture. The total intramuscular collagen was also determined. The muscle consisted of type IIA, IIB and IIC myofibers, of which type IIB occurred at the highest frequency. The diameter of type IIB myofibers in each week was largest in the layer, followed by the meat, and was smallest in the Silky. The total amount of collagen reached 3.38 mg/g in the meat bird, 3.03 mg/g in the layer and 2.71 mg/g in the Silky by 30 weeks of age, respectively. In the perimysium, the collagen bundles increased in size and density of fibrils with growth. At 30 weeks of age the layer had compact collagen platelets while the Silky had loose collagen bundles. In the meat bird, the collagen bundles were moderately compact. The endomysial collagen network had a large mesh size at 1 week and thereafter accumulated many collagen fibrils to form a felt-like fabric of fibrils at 30 weeks of age. From these results it appears that growth-related changes in the iliotibialis lateralis muscle are not necessarily causally affected by the different growth rates of chicken breeds.

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Section: Discussionmentioning

confidence: 99%

Comparative observations of the growth changes of the histochemical properties and collagen architecture of the iliotibialis lateralis muscle from Silky, layer and meat type cockerels

Oshima

Iwamoto

Shoji

et al. 2007

Animal Science Journal

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show abstract

“…Silky birds had the smallest muscle and these were associated with myofibers of the smallest diameter. Muscle volumes that differ between breeds show variation either in myofiber numbers (Mizuno & Hikami 1971) or myofiber sizes (Prentis et al . 1984; Horak et al .…”

Section: Discussionmentioning

confidence: 99%

Comparative observations on the growth changes of the histochemical property and collagen architecture of the Musculus pectoralis from Silky, layer‐type and meat‐type cockerels

Oshima¹,

Iwamoto²,

Shoji³

et al. 2007

Animal Science Journal

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Growth‐related changes in the histochemical properties and collagen architecture of the Musculus pectoralis were compared among Silky, layer‐type and meat‐type cockerels. Histochemical and immunohistochemical methods were used and collagen architecture was studied using scanning electron microscopy. The total amount of collagen present was also measured. The diameter of type IIB myofibers was similar or rather larger in the layer‐type birds compared with the meat‐type. The collagen content was generally low for 5–10 weeks across the breeds and then increased in the other breeds except for Silky. In the perimysium, the collagen bundles gradually increased in size and the density of the fibrils also increased during growth. At 30 weeks of age, the layer‐type birds showed compact collagen bundles while the meat‐type had loose bundles. The endomysial collagen network appeared relatively denser in the meat‐type chicks compared to the others at week 1. At 30 weeks of age, compact and felt‐like structure of endomysium was shown by Silky and layer‐type chickens, while the meat‐type showed a relatively loose arrangement of tissue in the endomysial collagen. From these results, it appears that the meat‐type chicken can produce a large M. pectoralis with many, relatively thinner myofibers and a relatively undeveloped form of intramuscular collagen structure.

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“…In chickens, selection for overall growth has been shown to induce greater muscle weight at the same age by increasing the fiber size and number (Rémignon et al, 1995;Burke and Henry, 1997;Scheuermann et al, 2004). However, according to Prentis et al (1984), fiber size was of greater importance than fiber number in determining muscle size. Moreover, it seems that broiler selection focused on improved breast yield led to wider and thicker P. major muscles essentially by increasing the diameter and length of fiber without significantly altering their number (Guernec et al, 2003).…”

Section: Fiber Hypertrophy and Muscle Growthmentioning

confidence: 99%

Consequence of muscle hypertrophy on characteristics of Pectoralis major muscle and breast meat quality of broiler chickens1

Berri¹,

Bihan-Duval²,

Debut³

et al. 2007

Journal of Animal Science

190

117

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The structural and metabolic characteristics of the pectoralis major (P. major) muscle (i.e., breast muscle) and the quality of the resulting meat were studied in relation to breast muscle fiber development in broiler chickens. Six hundred birds originating from a commercial, grand parental, male heavy line (Hubbard-Europe, Châteaubourg, France) were kept under conventional breeding methods until their usual marketing age of 6 wk. For all birds, the plasma creatine kinase activity and the P. major muscle fiber cross-sectional area (CSA), glycolytic potential, lactate content, pH at 15 min postmortem, as well as the ultimate pH, CIELAB color parameters [lightness (L*), redness (a*), and yellowness (b*)], and drip loss of breast meat, were measured. Increased breast weight and yield were associated with increased fiber CSA, reduced muscle glycolytic potential, and reduced lactate content at 15 min postmortem. Therefore, P. major muscle exhibiting larger fiber CSA exhibited greater pH at 15 min postmortem and ultimate pH, produced breast meat with lower L* and reduced drip loss, and was potentially better adapted to further processing than muscle exhibiting small fiber CSA.

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Possible use of an indicator muscle in future breeding experiments in domestic fowl

Cited by 14 publications

References 20 publications

Comparative observations of the growth changes of the histochemical properties and collagen architecture of the iliotibialis lateralis muscle from Silky, layer and meat type cockerels

Comparative observations of the growth changes of the histochemical properties and collagen architecture of the iliotibialis lateralis muscle from Silky, layer and meat type cockerels

Comparative observations on the growth changes of the histochemical property and collagen architecture of the Musculus pectoralis from Silky, layer‐type and meat‐type cockerels

Consequence of muscle hypertrophy on characteristics of Pectoralis major muscle and breast meat quality of broiler chickens1

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