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Teasing to induce ovarian activity in anoestrous mule ewes

Published online by Cambridge University Press:  24 November 2017

M F Ibraheem ,
J S M Hutchinson ,
M E King ,
L M Mitchell  and
M Donald
M F Ibraheem
Affiliation:
School of Agriculture, 501 King Street, Aberdeen AB9 1UD
J S M Hutchinson
Affiliation:
School of Agriculture, 501 King Street, Aberdeen AB9 1UD
M E King
Affiliation:
School of Agriculture, 501 King Street, Aberdeen AB9 1UD
L M Mitchell
Affiliation:
School of Agriculture, 501 King Street, Aberdeen AB9 1UD
M Donald
Affiliation:
School of Agriculture, 501 King Street, Aberdeen AB9 1UD
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Extract

Efficient management techniques in sheep production must take particular account of the pattern of reproductive behaviour and its application in the manipulation of reproductive processes. Conventionally in the UK, the advancement of the breeding season has been achieved by the use of progesterone-impregnated sponges and pregnant mare's serum gonadotrophin (PMSG). The ‘ram effect’ has been shown to be a powerful and cheap way of controlling the time of mating of sheep. The objective of the present study was to investigate the value of using different methods of teasing for the stimulation of ovarian activity in an early lambing flock.

Type
Sheep Production
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1990 , March 1990 , pp. 166
Copyright
Copyright © The British Society of Animal Production 1990

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References

Ibraheem, M F, King, H E, Hutchinson, J S H, Cunn, G J and Taylor, L (1989). Stimulation of seasonally anovular Mule eweo by rams. British Society of Animal Production, Winter Meeting 1989, Paper No.57.Google Scholar
Oldham, C M and Martin, G B (1979) Stimulation of seasonally anovular Merino ewes by rams. 2.Premature regression of ram-induced corpora lutea. Anim. Reprod. Sci. 1: 291–295 Google Scholar
Pearce, D. T and Oldham, C H (1984). The ram effect, its mechanism and application to the management of sheep. In: Review of Research in Sheep Reproduction, pp. 26–34. Eds. Lindsay, D R and Pearce, D T. Australian Academy of Science, Canberra.Google Scholar
Schanbacher, H D and Lunstra, D D (1976). Seasonal changes in sexual activity and serum levels of LH and testosterone in Finnish Landrace and Suffolk rams. J. Anim. Sci. 43: 644–650.Google Scholar
Signoret, J P, Fulkerson, W J and Lindsay, D R (1982). Effectiveness of testosterone treated wethers and ewes as teasers. Appl. Anim. Etliol. 9: 37–45 Google Scholar
Winfield, C G, Bremner, W J, Gumming, I A, Galloway, D B and Hakin, A W (1978). Mating behaviour and hormonal changes in rams in relation to breed and season. Proc. Aust. Soc. Anim. Prod. 12: 248.Google Scholar