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The effect of crossbred ewe type and ram genotype on lamb output and carcass quality

Published online by Cambridge University Press:  20 November 2017

L.E.R. Dawson
Affiliation:
The Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down, BT26 6DR
A.F. Carson
Affiliation:
The Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down, BT26 6DR
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Extract

In view of the stratified nature of the sheep industry, changes in breeding policies in the hill sector impinge on the performance of the lowland sector. Carson et al (2000) investigated the effect of choice of ram and ewe breed on lamb output and carcass quality in the hill sheep sector. First cross (F1) ewes were produced as a result of crossing Scottish Blackface and Cheviot ewes with a range of ram breeds. The primary objective of the present study was to provide information on the performance of these crossbred females in terms of lamb output and carcass quality and thus determine the impact of changing hill genetics on all strata of the sheep industry. Within the terminal sire breeds significant improvements in lean growth potential have been made through genetic improvement schemes. The secondary objective of this study was to provide information on the effects of using high lean growth index rams on lamb growth and carcass quality.

Type
Poster Presentations
Copyright
Copyright © The British Society of Animal Science 2001

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References

Carson, A.F., Irwin, D. and Kilpatrick, D.J. A comparison of Scottish Blackface and Wicklow Cheviot ewes and five sire breeds in terms of lamb output in hill sheep systems. Journal of Agricultural Science, Cambridge (submitted).Google Scholar