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The Effect of the Hypertrophied Type on Carcase Composition and Muscle Distribution in the Maine Anjou Breed

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Muscle Hypertrophy of Genetic Origin and its use to Improve Beef Production

Part of the book series: Current Topics in Veterinary Medicine and Animal Science ((CTVM,volume 16))

Abstract

Carcase composition and muscle distribution have been studied in five normal and five hypertrophied bulls of the Maine-Anjou breed.

After anatomical dissection the weights of muscle, bone, fatty tissue and the weights of individual muscles were statistically analysed by the multivariate analysis.

At the same carcase weight, hypertrophied animals contain more muscle (+ 14.47%), less bone (- 18.87%) and fatty tissues (- 56.59%). There are some muscles showing higher percentages in hypertrophied animals: Biceps femoris, Semimembranosus, Cutaneus trunci, Pectoralis ascendens, Brachiocephalicus, Latissimus dorsi, Rhomboideus, Triceps brachii caput longum, Semitendinosus, and others showing lower percentages than in the normal type: Intercostales, Spinalis thoracis, M. antebrachii, Obliquus internus abdominis, Semispinalis capitis, Obturatorius externus + Obturatorius internus, Vastus intermedius, Serratus ventralis cervicis, Rectus abdominis.

Differences found in muscle weight distribution lead to some relative weight hyperdevelopment, mainly located at the posterior parts of the thigh and arm. On the contrary there is some hypodevelopment located at the distal part of the hindlimb.

Résumé

La composition anatomique des carcasses et la distribution des muscles ont été étudiées chez cinq taureaux normaux et cinq taureaux hypertrophiés de la race Maine-Anjou.

Après dissection anatomique, le poids de muscles, d’os, de tissus gras et le poids des muscles individuels ont été analysés par la méthode d’analyse multi-dimensionnelle des données centrées.

Au méme poids de carcasse (450 kg) les animaux hypertrophiés contiennent plus de muscles (+ 14.47%), moins d’os (- 18.87%) et beaucoup moins de tissus gras (- 56.59%>).

Il y a une grande différence dans la distribution du poids des muscles entre animaux hypertrophiés et normaux, certains muscles présentant des pourcentages plus importants chez les animaux hypertrophiés: Biceps femoris, Semimembranosus, Cutaneus trunci, Fectoralis ascendens, Brachiocephalics, Latissimus dor si, Rhomboideus, Triceps brachii caput longum, Semitendinosus, et d’autres présentant des pourcentages plus faibles que ceux des animaux normaux: Intercostales, Spinalis thoracis, M. antebrachii, Obliquus internus abdominis, Semispinalis capitis, Obturatorius externus + obturatorius internus, Vastus intermedius, Serratus ventralis cervicis, Rectus abdominis.

Les différences trouvées dans la distribution des poids de muscles entraînent un hyperdéveloppement en masse principalement localise dans les regions posterieures de la cuisse et du bras.

A l’inverse il existe un hypodéveloppement au niveau de la partie distale du membre postérieur.

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References

  • Boccard, R. and Dumont, B.L., 1974. Conséquences de l’hypertrophie musculaire héréditaire des bovins sur la musculature. Ann. Génét. Sél. Anim., 6 (2), 177–186.

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  • Butterfield, R.M., 1963. Symposium on carcase composition and appraisal of meat animals, 4, 1–13, CSIRO Melbourne.

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  • Lefebvre, J., 1976. Introduction aux analyses statistiques multidimensionn-elles - Masson Edit. Paris.

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© 1982 ECSC, EEC, EAEC, Brussels-Luxemburg

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Dumont, B.L., d’Herlincourt, A., Schmitt, O., Lefebvre, J. (1982). The Effect of the Hypertrophied Type on Carcase Composition and Muscle Distribution in the Maine Anjou Breed. In: King, J.W.B., Ménissier, F. (eds) Muscle Hypertrophy of Genetic Origin and its use to Improve Beef Production. Current Topics in Veterinary Medicine and Animal Science, vol 16. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-7550-7_14

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  • DOI: https://doi.org/10.1007/978-94-009-7550-7_14

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-009-7552-1

  • Online ISBN: 978-94-009-7550-7

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