Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-24T05:59:03.854Z Has data issue: false hasContentIssue false
  • English
  • Français

A note on effect of docking on skin structure and characteristics of the fleece in Rahmani fat-tailed sheep

Published online by Cambridge University Press:  02 September 2010

I. F. M. Marai ,
M. N. El-Gaafary  and
B. A. K. Ahmed
I. F. M. Marai
Affiliation:
Department of Animal Production, Faculty of Agriculture, Zagazig University, Egypt
M. N. El-Gaafary
Affiliation:
Department of Animal Production, Faculty of Agriculture, Zagazig University, Egypt
B. A. K. Ahmed
Affiliation:
Department of Animal Production, Faculty of Agriculture, Zagazig University, Egypt
Get access

Abstract

The histological characteristics of the skin of docked and undocked fat-tailed sheep were studied at 15-day intervals between birth and 90 days of age, then every 30 days until 180 days and every 3 months until 1 year of age. Data presented in this paper were recorded at birth, 30, 60, 120,180 and 360 days of age. The fleece characteristics were studied at 1·0,1·5 and 2·0 years of age.

The skin structure was similar in docked and undocked Rahmani sheep and did not differ from that of other breeds of sheep.

The effect of docking was significant at most ages of the study on internal diameter of primary follicles and on the external and internal diameters of secondary and on average diameters of wool follicles (P < 0·05). The effect of docking was highly significant on each of staple length and wool diameter.

Keywords

dockingfolliclessheepwool
Type
Research Article
Information
Animal Production , Volume 55 , Issue 2 , October 1992 , pp. 292 - 294
Copyright
Copyright © British Society of Animal Science 1992

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

American Society of Testing and Material. 1985. Standard specifications for fineness of woo l or mohair and assignment of grade. Annual Book of ASTM Standard (Designation, 2130) 7: 727–736.Google Scholar
Badreldin, A. I., Kamar, G. A. R., Shafei, M. M. and Marai, I. F. M. 1961a. Histological structure of wool follicles group in fat-tailed sheep. Acta anatomica 44: 363–373.CrossRefGoogle ScholarPubMed
Badreldin, A. I., Kamar, G. A. R., Shafei, M. M. and Marai, I. F. M. 1961b. Factors influencing wool follicle characteristics in fat-tailed sheep, journal of Animal Production, United Arab Republic 1: 61–73.Google Scholar
Badreldin, A. I. and Marai, I. F. M. 1966. Wool follicle development in relation to fleece type in Barki, Merino, Ossimi and Texel sheep. Journal of Animal Production, United Arab Republic 6: 105–116.Google Scholar
Burns, M. 1949. Studies on follicle population in relation to fleece changes i n lambs of the English Leicester and Romney breeds. Journal of Agricultural Science 39: 64–79.Google Scholar
Burns, M. 1953. Observations on the follicle population of Blackface sheep. Journal of Agricultural Science, Cambridge 43: 422–431.CrossRefGoogle Scholar
Hafez, E. S. E., Badreldin, A. L. and Sharafeldin, M. A. 1958. Heat tolerance studies on fat-tailed shee p in the subtropics. Journal of Agricultural Science, Cambridge 47: 280–286.CrossRefGoogle Scholar
Juma, K. H., Gharib, F. J. and Eliya, J. 1971. A not e on studies on heat tolerance in Awassi sheep. Animal Production 13: 369–370.Google Scholar
Marai, I. F. M. 1959. Histological study of wool follicles in Egyptian native sheep. M.Sc. thesis, Faculty of Agriculture, Cairo University, Egypt.Google Scholar
Marai, I. F. M. 1964. Wool types in some pure breeds and their crosses. Ph.D. thesis, Cairo University, Egypt.Google Scholar
Marai, I. F. M., Ewais, M. S. S. and Abou-Fandoud, E. 1983. Pre-natal development of wool follicles in Egyptian fat-tailed sheep. Proceedings of fifth world conference on animal production, Tokyo, Japan.Google Scholar
Marai, I. F. M., Nowar, M. S., Bahgat, L. B. and Owen, J. B. 1987. Effect of docking and shearing on growth and carcass traits of fat-tailed Ossimi sheep. Journal of Agricultural Science, Cambridge 109: 513–518.CrossRefGoogle Scholar
Marai, I. F. M., Nowar, M. S., El-Shobokshy, A. S. and Bahgat, L. B. 1989. Effect of docking on blood constituents and docking and shearing on heat tolerance of fat-tailed sheep, under a sub-tropical environment. Research and Development in Agriculture 6: 83–86.Google Scholar
Ragab, M. T. and Marai, I. F. M. 1969. Some wool follicle characteristics in crossbreds between Egyptian coarse-wool and long-wool breeds. Journal of Agricultural Science, Cambridge 73: 211–213.CrossRefGoogle Scholar
Shafei, M. M. and Marai, I. F. M. 1966. Skin glands and layers in some breeds of sheep. Journal of Animal Production, United Arab Republic 6: 117–124.Google Scholar
Snedecor, G. W. and Cochran, W. G. 1980. Statistical methods. Iowa State College Press, Ames, Ia.Google Scholar