Variation and Impact of Muscle Thickness

Dumont, Bertrand

doi:10.1007/978-94-009-9756-1_8

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…Subjective determinations of bovine muscularity usually are based on visual assessments of morphologic factors concerning size, shape and position of the musculature in relation to the skeleton (Kauffman et al, 1970). The major determinant of muscularity is thickness of muscle (independent of fatness) relative to dimensions of the skeleton (de Boer et al, 1974;Dumont, 1978). Variation in muscularity also is reflected by differences in body shapeconvex, bulging shapes for muscular cattle vs concave, flat, angular shapes for thinly muscled cattle (Kauffman et al, 1973).…”

Section: Resultsmentioning

confidence: 99%

Effects of Feeder-Cattle Frame Size and Muscle Thickness on Subsequent Growth and Carcass Development. I. An Objective Analysis of Frame Size and Muscle Thickness

Tatum

Williams

Bowling

1986

Journal of Animal Science

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A multivariate analysis was performed to provide objective descriptions of visually perceived differences in feeder-cattle frame size and muscle thickness. Three hundred and twenty-four yearling feeder steers were selected to represent USDA classifications for frame size (Large, L; Medium, M; Small, S) and muscle thickness (No. 1, No. 2 and No. 3). The frame-size classification (F) of each steer was determined by a subjective evaluation of skeletal size-height and length-in relation to maturity; the muscle-thickness classification (M) was based on a visual assessment of thickness of the rear quarter, forearm and gaskln-due to muscle expression and independent of differences in fatness-in relation to skeletal size. Six dimensional measurements (heart girth, hip width, stifle width, forearm circumference, body length and hip height) and a measurement of subcutaneous fat thickness (fat probe) were recorded for each steer to obtain objective assessments of traits that were emphasized during visual classification. A canonical varlate analysis was performed on the system of body measurements to quantify differences in feeder-cattle size and shape corresponding to USDA descriptions of frame size and muscle thickness. Over 95% of the dimensional variation among the nine F X M subclasses (L-No. 1, L-No. 2... S-No. 3) was explained by the first two canonical vatiates. The first canonical variate (Zt) described morphological differences correspondingto variation in frame size and primarily reflected differences in absolute stature (L>M>S). Moreover, Z~ revealed a latent tendency for cattle of different frame sizes to vary in relative body dimensions (length, width and girth in relation to height). These relative dimensional differences were attributed to variation in developmental status. The second canonical variate (Z a ) primarily contrasted variation in rear-quarter thickness (relative to skeletal size) and shape corresponding to visually perceived differences in muscle thickness. Cattle perceived to be thickly muscled (No. I muscle thickness) had disproportionately wide and convexly shaped rear quarters, while steers classified as thinly muscled (No. 3 muscle thickness) were relatively narrow and flat through the rear quarters. Circumference of the forearm received secondary emphasis for discriminating among muscle-thickness groups. Evaluations of muscle thickness did not appear to be influenced by variation in subcutaneous fat thickness. Results of the analysis were used as an objective basis for interpreting the effects of feeder-cattle frame size and muscle thickness on subsequent growth and carcass development. (

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Section: Resultsmentioning

confidence: 99%

Effects of Feeder-Cattle Frame Size and Muscle Thickness on Subsequent Growth and Carcass Development. I. An Objective Analysis of Frame Size and Muscle Thickness

Tatum

Williams

Bowling

1986

Journal of Animal Science

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“…Muscle fibre diameter were found high in case of thigh muscle as compared to breast muscle in the same group which might be due to type of muscles and exercise (Dumont, 1978). However, muscle fibre diameter was observed exceptionally high in case of thigh muscle of desi, which might be due to breed, type of muscle and exercise (Goldspink, 1962;Dumont, 1978). The effect of enzyme treatment did not show differences in the MFD of control of the respective muscle in their respective groups on incubation at 60°C.…”

Section: Resultsmentioning

confidence: 75%

“…Some workers reported no difference in MFD due to sex and muscle type in case of rabbit (Nath and Narayan Rao, 1983), while differences occurred due to age and plain of nutrition (Joubert, 1956), However, present result agrees with the finding of Hammond (1932) and Joubert (1956), who reported in case of pig that MFD differ from one muscle to another, between species, breed and sex as reported. Muscle fibre diameter were found high in case of thigh muscle as compared to breast muscle in the same group which might be due to type of muscles and exercise (Dumont, 1978). However, muscle fibre diameter was observed exceptionally high in case of thigh muscle of desi, which might be due to breed, type of muscle and exercise (Goldspink, 1962;Dumont, 1978).…”

Section: Resultsmentioning

confidence: 92%

Effect of Plant Proteolytic Enzyme on the Physico-chemical Properties and Lipid Profile of Meat from Culled, Desi and Broiler Chicken

Sinku¹,

Prasad²,

Pal³

et al. 2003

Asian Australas. J. Anim. Sci

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Proteolytic enzymes are used for meat tenderization, an important process with regard to consumer preference. The proteolytic enzyme, IVRIN was isolated from the plant Cucumis pubescens W and its effect on physico-chemical properties and lipid profile of thigh and breast muscle of culled, desi and broiler birds was studied. Fifty-gram meat was treated with IVRIN containing 32.5 mg enzyme protein at 60°C for 20 min. The pH of IVRIN treated meat was decreased significantly (p<0.01) and the effect was more pronounced in breast than thigh muscle. The water holding capacity (WHC) was increased significantly (p<0.01) in broiler as compared to desi and culled bird, and in breast compared to thigh muscle. IVRIN failed to produce any impact on muscle fiber diameter (MFD). The MFD of desi was significantly higher (p<0.01) than broiler and culled birds. The total lipid concentration in thigh and breast muscle of desi was lower (p<0.01) than broiler and culled birds, latter being similar in this respect. The cholesterol content was lower (p<0.01) in breast than thigh muscle, in broiler than desi and culled and in IVRIN treated than untreated meat samples. The phospholipid concentration was unaffected by IVRIN. Broiler and culled birds exhibited more phospholipid content than desi birds.

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Sex differences in muscle topography and its relationship to muscularity in Double Muscled cattle

Shahin

1995

Livestock Production Science

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Variation and Impact of Muscle Thickness

Cited by 4 publications

References 10 publications

Effects of Feeder-Cattle Frame Size and Muscle Thickness on Subsequent Growth and Carcass Development. I. An Objective Analysis of Frame Size and Muscle Thickness

Effects of Feeder-Cattle Frame Size and Muscle Thickness on Subsequent Growth and Carcass Development. I. An Objective Analysis of Frame Size and Muscle Thickness

Effect of Plant Proteolytic Enzyme on the Physico-chemical Properties and Lipid Profile of Meat from Culled, Desi and Broiler Chicken

Sex differences in muscle topography and its relationship to muscularity in Double Muscled cattle

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