A comparison of tissue development in Pietrain and Large White pigs from birth to 64 kg live weight 2. Growth changes in muscle distribution

Half carcasses of 18 Pietrain and 18 Large White female pigs were each dissected into 93 muscle units. An allometric analysis of the weight of these units relative to total muscle revealed increasing craniocaudal and distoproximal growth gradients, which were more pronounced in the Pietrain. The greater total weight of muscle, shown previously for the Pietrain at any given body weight over the range studied, was not due to higher muscle weights in any particular region at birth, but at 60 kg body weight was due to heavier high impetus muscles. Heart weight relative to total muscle weight was higher for the Large White over the entire range. It is concluded that for the animals studied the changes in muscle distribution are related to the functional demands of an increase in body size, and that the muscle distribution of pigs can differ between breeds.

[1]  A. Davies.  A comparison of tissue development in Pietrain and Large White pigs from birth to 64 kg live weight 1. Growth changes in carcass composition , 1974 .

[2]  Lohse Cl.  The influence of sex on muscle growth in Merino sheep. , 1973 .

[3]  Davies As.  Postnatal changes in the histochemical fibre types of procine skeletal muscle. , 1972 .

[4]  F. P. Moss,et al.  Growth patterns of muscles of Merino sheep from birth to 517 days , 1971 .

[5]  A. W. Marrable.  The embryonic pig : a chronological account , 1971 .

[6]  E. Brannang.  Studies on monozygous cattle twins. 23. The effect of castration and age of castration on the development of single muscles, bones and special sex characters. Part 2. , 1971 .

[7]  H. Sheng,et al.  Growth of the beagle: changes in chemical composition. , 1971, Growth.

[8]  R. Seebeck.  A dissection study of the distribution of tissues in lamb carcasses. , 1968 .

[9]  R. Vaccaro,et al.  Relationship of Dam's Weight and Weight Changes to Calf's Growth Rate in Hereford Cattle , 1966 .

[10]  R. Butterfield,et al.  A classification of bovine muscles, based on their relative growth patterns. , 1966, Research in veterinary science.

[11]  A. Cuthbertson,et al.  Quantitative anatomical studies of the composition of the pig at 50, 68 and 92 kg. carcass weight II. Gross composition and skeletal composition , 1962, The Journal of Agricultural Science.

[12]  Philip L. Altman,et al.  Growth: including reproduction and morphological development. , 1962 .

[13]  M. Burton.  Systematic dictionary of mammals of the world , 1962 .

[14]  R. Mansueti,et al.  Wild Animals of North America , 1961 .

[15]  H. Pálsson,et al.  Effects of the plane of nutrition on growth and the development of carcass quality in lambs Part I. The effects of High and Low planes of nutrition at different ages , 1952, The Journal of Agricultural Science.

[16]  C. P. Mcmeekan.  Growth and development in the pig, with special reference to carcass quality characters. I , 1940, The Journal of Agricultural Science.

[17]  Arthur Walton,et al.  The maternal effects on growth and conformation in Shire horse-Shetland pony crosses. , 1938 .

[18]  A. B. Appleton,et al.  Growth and the development of mutton qualities in the sheep : a survey of the problems involved in meat production , 1932 .