Hereditary Muscular Hypertrophy in the Bovine I. Histological and Biochemical Characterization

Ashmore, C. R.; Robinson, D.

doi:10.3181/00379727-132-34257

Cited by 26 publications

(10 citation statements)

References 5 publications

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“…The enlarged gross musculature in abnormally hypermuscled cattle has been suggested to result, firstly, from a greater number of muscular fibers and a higher percentage of type IIb fibres and, secondly, from larger type IIb fibres (ASHMORE and DOERR, 1971; ASHMORE et al, 1972;ASHMORE and ROBINSON, 1969). The present work showed that Belgian blue DM calves, resulting from genetic selection, have less type I fibres but more type IIb fibres than F calves.…”

Section: Discussionsupporting

confidence: 51%

“…Moreover, the type I1 fibres are larger in hypermuscled animals than in normal ones (HOLMES and ASHMORE, 1972). It has also been reported that muscular biopsies are associated with less bleeding in hypermuscled muscles (ASHMORE and ROBINSON, 1969) and that these muscles contain a higher proportion of less vascularized type IIb fibres (WEST, 1974), suggesting that one of these muscle specificities could be poor vascularization.…”

Section: Introductionmentioning

confidence: 96%

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Muscle Fibre Type and Size, and Muscle Capillary Density in Young Double‐Muscled Blue Belgian Cattle

Stavaux

Art

McEntee

et al. 1994

Journal of Veterinary Medicine Series A

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Summary Bovine muscle biopsies were analysed for fiber type and capillary density by the acid ATP‐ase and amylase‐PAS methods respectively. Samples obtained from Belgian blue double muscled (DM) calves were compared for their fibre type, size and vascularization with samples from Friesian (F) calves. The animals were sampled both at 2 and 7 months of age. Changes in histochemical composition occurring with ageing, independently of the breed, and differences related to the muscle sampled by comparing biopsies obtained from the longissimus dorsi (LD) and gluteobiceps (GB) muscles in animals of both breed were also investigated. Independently of age and muscle, fibre type I percentage and area were significantly higher in F than in DM muscles. Type IIa area was significantly larger in F than in DM, while fibre type IIb percentage and area were higher in DM. The number of capillaries/mm2 was significantly higher in F than in DM. Fibre type IIa and IIb percentage as well as the diameter of the three fibre types was significantly higher in the oldest animals. Finally, independently of age and breed, fibre type I and IIb percentages were significantly higher in LD but lower in GB. The results mainly demonstrated that Belgian blue DM muscles present a higher proportion of IIb fibres and a lower capillary supply than F muscles.

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Section: Discussionsupporting

confidence: 51%

Section: Introductionmentioning

confidence: 96%

Muscle Fibre Type and Size, and Muscle Capillary Density in Young Double‐Muscled Blue Belgian Cattle

Stavaux

Art

McEntee

et al. 1994

Journal of Veterinary Medicine Series A

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“…The effect of stress on muscle tissue is in direct proportion to the percentage of IIB/X fibers, which in its turn, occurs in higher proportion in farm animals selected for growth rate (Ashmore and Robinson, 1969;Dildey et al, 1970). In addition to the evaluation of the metabolic and contraction properties of the myofibers and their distribution in skeletal muscle, it is -E-mail: anamoura@fca.unesp.br important to investigate their cross-sectional areas, once they are responsible, to a great extent, for the final muscle weight (Ashmore et al, 1972).…”

Section: Introductionmentioning

confidence: 99%

Age-related changes in muscle fiber type frequencies and cross-sectional areas in straightbred and crossbred rabbits

Bianospino

Moura

Wechsler

et al. 2008

Animal

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This study was designed to investigate the effects of the interaction among genetic group, sex and age on the frequencies and cross-sectional areas of myofiber types in rabbits. A total of 48 straightbred and crossbred Botucatu rabbits, males and females, were involved in a split plot design with a 2 3 2 (genetic groups 3 genders) factorial arrangement. Young rabbits were weaned at 35 days of age and sequentially slaughtered, four per genetic group 3 sex combination, at 42, 63 and 84 days of age. The flexor carpi radialis muscle was dissected, histological sections (10 mm) were obtained and the frequencies and cross-sectional areas of myofiber types: I, IIA and IIB/X were determined. An effect of the genetic group 3 sex 3 slaughter age interaction was found on the frequency distribution of myofiber types. A transition from type IIA to type IIB/X fibers was observed (P , 0.01) with advancing age, except in crossbred females, but the frequency of IIA fibers was already lower (57.3%) and of IIB/X fibers numerically higher (33.7%) in this group at 42 days. The proportions of IIA fibers in straightbred males, crossbred males and straightbred females decreased from 80.1%, 89.4% and 68.8% at 42 days to 43.9%, 52.3% and 40.1% at 63 days, respectively, whereas the proportions of type IIB/X fibers, in the same groups, increased from 10.3%, 1.6% and 22.3% at 42 days to 42.2%, 37.0% and 49.8% at 63 days, respectively. In all three age points, type IIA fibers showed the largest cross-sectional areas, followed by type I and IIB/X fibers. The cross-sectional areas of IIB/X fibers were larger in crossbreds, but no differences were found between genetic groups concerning fiber types IIA and I. All three types of fibers showed positive linear association with age, but relative to the initial area type IIB/X fibers presented a higher degree of hypertrophy (144% up to 84 days) than type IIA and I fibers (86% and 85%, respectively). The flexor carpi radialis muscle was, on average, heavier in crossbred than in straightbred females, but no difference was observed between crossbred and straightbred males. Differences in the weight of flexor carpi radialis muscle were attributed to the hypertrophy of type IIB/X fibers in the crossbreds.

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“…Because it was reported that the enlarged muscles of cattle with muscular hypertrophy had fewer red fibers and a slightly higher percentage of white fibers (ASHMORE, ROBINSON 1969;ANSAY 1972;HENDRICKS et al 1973), it seemed interesting to examine whether the activity of Krebs cycle dehydrogenases-isocitric and malateoccuring in blood, is changed.…”

Section: Introductionmentioning

confidence: 99%

Physiological aspects of muscular hypertrophy in cattle¹

Kolataj

Świergiel

Dziewiecki

et al. 1979

Zeitschrift für Tierzüchtung und Züchtungsbiologie

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Hereditary Muscular Hypertrophy in the Bovine I. Histological and Biochemical Characterization

Cited by 26 publications

References 5 publications

Muscle Fibre Type and Size, and Muscle Capillary Density in Young Double‐Muscled Blue Belgian Cattle

Muscle Fibre Type and Size, and Muscle Capillary Density in Young Double‐Muscled Blue Belgian Cattle

Age-related changes in muscle fiber type frequencies and cross-sectional areas in straightbred and crossbred rabbits

Physiological aspects of muscular hypertrophy in cattle¹

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Hereditary Muscular Hypertrophy in the Bovine I. Histological and Biochemical Characterization

Cited by 26 publications

References 5 publications

Muscle Fibre Type and Size, and Muscle Capillary Density in Young Double‐Muscled Blue Belgian Cattle

Muscle Fibre Type and Size, and Muscle Capillary Density in Young Double‐Muscled Blue Belgian Cattle

Age-related changes in muscle fiber type frequencies and cross-sectional areas in straightbred and crossbred rabbits

Physiological aspects of muscular hypertrophy in cattle1

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Physiological aspects of muscular hypertrophy in cattle¹