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Carcass Composition of Foetal Lambs: Effects of Hypophysectomy and Pituitary Stalk-Section

Published online by Cambridge University Press:  27 March 2009

T. E. Broad
Affiliation:
Applied Biochemistry Division, DSIR, Palmerston North, New Zealand
A. S. Davies
Affiliation:
Department of Physiology and Anatomy, Massey University, Palmerston North, New Zealand
G. C. Liggins
Affiliation:
Postgraduate School of Obstetrics and Gynaecology, University of Auckland, National Women's Hospital, Auckland, New Zealand

Extract

Besides retarding somatic development, hypophysectomy markedly increases the deposition of subcutaneous fat in foetal lambs (Liggins & Kennedy, 1968). Two hypophysectomized (HX) and two pituitary stalk-sectioned (SX) foetuses became available for dissection during a study of the growth of normal Romney sheep (Broad & Davies, 1980a, b and unpublished). The present report supplements the existing information concerning the effects of altered hypophyseal function on the carcass composition of foetal lambs (Liggins & Kennedy, 1968; Alexander, 1978).

Type
Short Notes
Copyright
Copyright © Cambridge University Press 1980

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References

Alexander, G. (1978). Quantitative development of adipose tissue in foetal sheep. Australian Journal of Biological Sciences 31, 489503.CrossRefGoogle ScholarPubMed
Broad, T. E. & Davies, A. S. (1980 a). Pre– and postnatal study of the carcass growth of the sheep. 1. Growth of dissectable fat and its chemical components. Animal Production (in the Press).CrossRefGoogle Scholar
Broad, T. E. & Davies, A. S. (1980 b). Pre– and postnatal study of the carcass growth of the sheep. 2. Growth of muscle and its chemical components. Animal Production (in the Press).Google Scholar
Heggestad, C. B. & Wells, L. J. (1965). Experiments on the contribution of somatotrophin to prenatal growth in the rat. Ada Anatomica 60, 348361.Google ScholarPubMed
Liggins, G. C. & Kennedy, P. C. (1968). Effects of electrocoagulation of the foetal lamb hypophysis on growth and development. Journal of Endocrinology 40, 371381.CrossRefGoogle ScholarPubMed
Liggins, G. C. & Nathanielsz, P. W. (1976). A oryosurgical technique for foetal hypophysectomy. Journal of Physiology, London 263, 116.Google Scholar
Nathanielsz, P. W., Abel, M. H., Bass, F. G., Krane, E. J., Thomas, A. L. & Liggins, G. C. (1978). Pituitary stalk-section and some of its effects on endocrine function in the foetal lambs. Quarterly Journal of Experimental Physiology 63, 211219.CrossRefGoogle Scholar
Thomas, A. L., Jack, P. M. B., Manns, J. G. & Nathanielsz, P. W. (1975). Effect of synthetic thyrotrophin releasing hormone on thyrotrophin and prolactin concentrations in the peripheral plasma of the pregnant ewe, lamb foetus and neonatal lamb. Biology of the Neonate 26, 109116.CrossRefGoogle ScholarPubMed