Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-12-02T19:15:22.063Z Has data issue: false hasContentIssue false
  • English
  • Français

Variation in wool growth and of mitotic activity in follicle bulbs induced by nutritional changes

Published online by Cambridge University Press:  01 February 1962

P. G. Schinckel
P. G. Schinckel
Affiliation:
C.S.I.R.O. Division of Animal Physiology, The Ian Clunies Ross Animal Research Laboratory, Prospect, N.S.W., Australia
Get access

Extract

Wool growth on tattoo patches and mitotic activity in follicle bulbs were studied in a sheep on low and high levels of nutrient intake. The rate of wool growth on the high intake was 156% greater than that on the low intake while the rate of cell production from the follicle bulbs was 56% greater. The remainder of the increase in rate of fibre output was attributed to an increase of about 64 % in the volume of the individual cells of the fibres.

Type
Research Article
Information
Animal Production , Volume 4 , Issue 1 , February 1962 , pp. 122 - 127
Copyright
Copyright © British Society of Animal Science 1962

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1Auber, L., 1952. The anatomy of follicles producing wool-fibres, with special reference to keratinization. Trans. Roy. Soc. Edin., 62: 191.CrossRefGoogle Scholar
2Bullough, W. S. & Laurence, E. B., 1958. The mitotic activity of the follicle. In The Biology of Hair Growth. Ed. Montagna, W. and Ellis, R. A.. Academic Press Inc., New York.Google Scholar
3Chase, H. B., 1954. Growth of the hair. Physiol. Rev., 34: 113.CrossRefGoogle ScholarPubMed
4Ferguson, K. A., 1959. Influence of dietary protein percentage on growth of wool. Nature (Lond.), 184: 907.CrossRefGoogle Scholar
5Ferguson, K. A., Carter, H. B. & Hardy, M. H., 1949. Studies of comparative fleece growth in sheep. Aust. J. biol. Sci., 2: 42.CrossRefGoogle Scholar
6Fraser, A. H. H. & Nichols, J. E., 1935. Wool growth in sheep as affected by the carbohydrate content of the diet. Emp. J. exp. Agric, 3: 75.Google Scholar
7Marston, H. R., 1948. Nutritional factors involved in wool production by Merino sheep. Aust. J. biol. Sci., 1: 362.CrossRefGoogle Scholar
8Pinkus, F., 1927. Die Anatomie der Haut. In Handbuch der Haut und Geschlechtskrankheiten. Springer, Berlin.Google Scholar
9Reis, P. J. & Schinckel, P. G., 1961. Nitrogen utilization and wool production by sheep. Aust. J. agric. Res., 12: 335.CrossRefGoogle Scholar
10Schinckel, P. G., 1960. Variation in feed intake as a cause of variation in wool production of grazing sheep. Aust. J. agric. Res., 11: 585.CrossRefGoogle Scholar
11Schinckel, P. G., 1961. Mitotic activity in wool follicle bulbs. Aust. J. biol. Sci. (In press.)CrossRefGoogle Scholar
12Van Wyk, C. M. & Nel, H. A. M., 1940. Studies on basic characteristics of South African Merino wool. Onderstepoort J. vet. Sci. Anim. Ind., 15: 325.Google Scholar