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Wool growth regulation by local skin cooling

Published online by Cambridge University Press:  02 September 2010

J. M. Doney
Affiliation:
Hill Farming Research Organisation, 29 Lander Road, Edinburgh 9
J. G. Griffiths
Affiliation:
Hill Farming Research Organisation, 29 Lander Road, Edinburgh 9
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Extract

Local cooling of the skin, produced by exposure to wind was shown to depress the rate of length growth of wool. The depression was associated with reductions in skin temperature and blood flow and with increases in heat transfer in the exposed regions. Fibre diameter did not appear to be affected and there were no indications of a systemic response of wool growth rate to exposure.

Type
Research Article
Copyright
Copyright © British Society of Animal Science 1967

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References

REFERENCES

Bennett, J. W., Hutchinson, J. C. D., & Wodzicka-Tomaszewska, M., 1962. Annual rhythm of wool growth. Nature, 194: 651652.CrossRefGoogle Scholar
Cockrem, F., 1959. Effect of sympathomimetic agent (methoxamine hydrochloride) on growth of hak in the house mouse (Mus musculus). Nature, 183: 614615.CrossRefGoogle Scholar
Doney, J. M., 1963. The effects of exposure in Blackface sheep with particular reference to the role of the fleece. J. agric. Sci., Camb., 60: 267273.CrossRefGoogle Scholar
Doney, J. M., 1966. Breed difference in response of wool growth to annual nutritional and climatic cycles. J. agric. Sci., Camb., 67: 2530.CrossRefGoogle Scholar
Downes, A. M., & Lyne, A. G., 1961. Studies on the rate of wool growth using [35] cystine. Aust. J. biol. Sci., 14: 120130.CrossRefGoogle Scholar
Downes, A. M., & Wallace, A. L. C., 1965. Local effects on wool growth of intradermal injections of hormones. In Proceedings of Symposium on Biology of Skin and Hair Growth. Ed. Lyne, A. G. and Short, B. F.. Angus and Robertson, Sydney.Google Scholar
Ferguson, K. A., 1949. The effect of sympathectomy on wool growth. Aust.J. sci. Res., B. 2: 438443.CrossRefGoogle Scholar
Greenfield, A. D. M., 1960. Peripheral blood flow by calorimetry. Meth. med. Res., 8: 302307.Google Scholar
Hatfield, H. S., & Wilkins, F. J., 1950. A heat-flow meter. J. sci. Inst., 27: 15.CrossRefGoogle Scholar
Joyce, J. P., & Blaxter, K. L., 1964. The effects of air movement, air temperature and infra-red radiation on the energy requirements of sheep. Brit. J. Nutr., 18: 527.CrossRefGoogle Scholar
Priestley, G. C., 1965. Wool and hair growth on autografts of sheep skin. Proc. roy. Soc. Med., 58: 808810.CrossRefGoogle ScholarPubMed
Rougeot, J., 1959. Mesure de la croissance individuelle des brins de laine à l'aide de radiocystine. Ann. Zootech., 8: 175177.CrossRefGoogle Scholar
Rudall, K. M., 1935. Growth changes in wool fibres; experiments on removing the heat conserving fleece. J. Text. Inst., 26: T358370.CrossRefGoogle Scholar
Ryder, M. L., 1956. Use of radioisotopes in the study of wool growth and fibre composition. Nature, 178: 14091410.CrossRefGoogle Scholar