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The Use of Sheep A.I. for Genetic Improvement in Commercial Lamb Production

Published online by Cambridge University Press:  22 November 2017

Margaret E King ,
C F S Clark ,
C Fraser  and
R Aitken
Margaret E King
Affiliation:
North of Scotland College of Agriculture, 581 King Street, Aberdeen, AB9 1UD
C F S Clark
Affiliation:
North of Scotland College of Agriculture, 581 King Street, Aberdeen, AB9 1UD
C Fraser
Affiliation:
Rowett Research Institute, Greenburn Road, Bucksburn, Aberdeen
R Aitken
Affiliation:
Rowett Research Institute, Greenburn Road, Bucksburn, Aberdeen
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Extract

In 1980/81 the North of Scotland College of Agriculture and the Rowett Research Institute carried out collaborative trials on artificial insemination of ewes. The ewes were double inseminated at 48 and 60 hours after pessary withdrawal, using diluted, fresh semen chilled to 15°C. The average conception rate at synchronised oestrus was 70%.

Considerable interest was shown by farmers in the North East of Scotland resulting in on-farm trials. These were restricted to a 50 mile radius of Aberdeen in order to minimise time between collection and insemination and ensure viability of semen. However one trial entailed flying semen to the Orkney Island of Hoy and covered 250 ewes over two days of which 66% lambed to the synchronised oestrus.

Type
Ai in Sheep
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1984 , March 1984 , pp. 101
Copyright
Copyright © The British Society of Animal Production 1984

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