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Modification of fleece development in Blackface sheep by variation in pre- and post-natal nutrition

Published online by Cambridge University Press:  02 September 2010

J. M. Doney  and
W. F. Smith
J. M. Doney
Affiliation:
Hill Farming Research Organisation, Edinburgh 12
W. F. Smith
Affiliation:
Hill Farming Research Organisation, Edinburgh 12
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Extract

1. Wool production and fleece structure were studied by fibre analysis in six groups of lambs subjected to different pre- and post-natal levels of nutrition. Samples were taken at 6, 12, 28 and 48 weeks of age.

2. Pre-natal limitation (twin pregnancy) reduced the number of secondary fibres present at birth but, providing post-natal nutrition was adequate, this difference had disappeared by 6 weeks. There were no permanent effects on fibre number, wool production or fleece structure.

3. Severe post-natal restriction of feed intake during the first few weeks of life had a marked effect on the development of the secondary fibre population, on wool production and on the birthcoat shedding cycle. The effects persisted beyond the period of nutritional limitation but had disappeared by 12 months of age.

4. The results are discussed in relation to the normal development of the adult Blackface fleece.

Type
Research Article
Information
Animal Production , Volume 6 , Issue 2 , June 1964 , pp. 155 - 167
Copyright
Copyright © British Society of Animal Science 1964

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References

REFERENCES

Burns, Marca, 1953. Observations on the follicle populations of Blackface sheep. J. agric. Sci., 43: 422.CrossRefGoogle Scholar
Doney, J. M., 1964. Thefleeceof the Scottish Blackface sheep. IV. The effects of preg- nancy, lactation and nutrition on seasonal wool production. J. agric. Sci., 62: 59.CrossRefGoogle Scholar
Doney, J. M. & Munro, Joan, 1962. The effect of suckling, management and season on sheep milk production as estimated by lamb growth. Anim. Prod., 4: 215.Google Scholar
Doney, J. M. & Smith, W. F., 1961. The fleece of the Scottish Blackface sheep. I. Seasonal changes in wool production. J. agric. Sci., 56: 365.CrossRefGoogle Scholar
Dry, F. W., 1934. Hairy fibres of the Romney sheep. N.Z. J. Agric, 48: 331.Google Scholar
Fraser, A. S. & Hamada, M. K. O., 1952. Observations on the birthcoats and skins of several breeds and crosses of British sheep. Proc. roy. Soc. Edinb. (B), 64: 462.Google Scholar
Fraser, A. S. & Short, B. F., 1960. The biology of the fleece. Anim. Res. Lab. Tech. Paper no. 3, C.S.I.R.O. Australia.Google Scholar
Galpin, N., 1947. Study of wool growth. I. Weight of wool. J. agric. Sci., 37: 275.CrossRefGoogle Scholar
Henderson, A. E., 1953. Fleece development and wool growth on the Romney lamb. J. agric. Sci., 43: 12.CrossRefGoogle Scholar
Ryder, M. L., 1955. The effect of nutritional plane on wool follicle development in Cheviot lambs. J. Text. Inst., 46: T565.CrossRefGoogle Scholar
Schinckel, P. G., 1953. Follicle development in the Australian Merino. Nature (Lond.), 171: 310.CrossRefGoogle ScholarPubMed
Schrnckel, P. G. & Short, B. F., 1960. The influence of nutrition during early life on adult productivity in a group of Merino sheep. Proc. Aust. Soc. Anim. Prod., 3: 147.Google Scholar
Schinckel, P. G. & Short, B. F., 1961. The influence of nutritional level during pre-natal and early post-natal life on adult fleece and body characters. Aust. J. agric. Res., 12: 176.CrossRefGoogle Scholar
Short, B. F., 1955. Developmental modification of fleece structure by adverse maternal nutrition. Aust. J. agric. Res., 6: 863.CrossRefGoogle Scholar
Slee, J., 1963. Birthcoat shedding in Wiltshire horn lambs. Anim. Prod., 5: 301.Google Scholar
Slee, J. & Carter, H. B., 1962. Fibre shedding and fibre-follicle relationships in the fleeces of Wiltshire Horn × Scottish Blackface sheep crosses. J. agric. Sci., 58: 309.CrossRefGoogle Scholar
Wildman, A. B., 1958. Food intake level in some Romney Marsh ewes and follicle- group development in their progeny. J. agric. Sci., 51: 307.CrossRefGoogle Scholar