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Influence of shearing and level of concentrates offered on the performance of lambs

Published online by Cambridge University Press:  24 November 2017

H.J. Black  and
D.M.B. Chestnutt
H.J. Black
Affiliation:
Agricultural Research Institute of N Ireland, Hillsborough, Co Down
D.M.B. Chestnutt
Affiliation:
Agricultural Research Institute of N Ireland, Hillsborough, Co Down
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Extract

It has been clearly established that shearing ewes during pregnancy increases lamb birthweight (Austin and Young, 1971; Rutter, Laird and Broadbent, 1971; Black and Chestnutt, 1990). Fewer studies have examined the response of fattening lambs to shearing although both Salman and Owen (1981) and Marai, Nowar and Bahgat (1987) noted a significant increase in growth rate. This was accompanied by an increase in voluntary food intake and consequently little change in the food conversion efficiency.

The objective of these experiments was to study the influence of shearing on voluntary food intake and growth rate of fattening lambs offered various levels of concentrate feeding plus ad libitum forage.

Type
Sheep Production
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1990 , March 1990 , pp. 164
Copyright
Copyright © The British Society of Animal Production 1990

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References

References:

Austin, A.R. and Young, N.E. (1977). The effect of shearing pregnant ewes on lamb birthweights. Vet. Rec., 100: 527–529.CrossRefGoogle Scholar
Black, Heather J. and Chestnutt, D.H.B. (1990). Influence of shearing regime and silage quality on the performance of pregnant and lactating ewes. (In Press)CrossRefGoogle Scholar
Marai, I.F.M., Nowar, M.S. and Bahgat, L.B. (1987). Effect of docking and shearing on growth and carcass traits of fat-tailed Ossimi sheep. J. Aqr. Sci. (Camb).109: 513–518.Google Scholar
Rutter, W., Laird, T.R. and Broadbent, P.J. (1971). The effects of clipping pregnant ewes at housing and of feeding basal roughages. Anim. Prod. 13: 329–336.Google Scholar
Salman, A.D. and Owen, E. (1981). A note on the effect of autumn shearing on the performance of fattening lambs. Anim. Prod. 33: 337–338.Google Scholar