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Short returns in ewes synchronised with prostaglandins

Authors: Allison AJ
Publication: New Zealand Veterinary Journal, Volume 26, Issue 1-2, pp 34-35, Jan 1978
Publisher: Taylor and Francis

Animal type: Livestock, Production animal, Ruminant, Sheep
Subject Terms: Oestrus/oestrous, Husbandry/husbandry procedures, Reproduction - hormones, Reproduction, Reproduction - female
Article class: Correspondence

Abstract: Following synchronisation of oestrus in ewes with a synthetic prostaglandin (PG; ICI 80996) there has been premature regression of corpora lutea (CL`s) in some animals and a return to oestrus within 4-7 days. The cause and incidence of this phenomenon is unknown. In a comparison of various methods of synchronisation, breeding-season observations were made on the timing and incidence of these short returns and the fertility of ewes to matings at this oestrus and at any subsequent oestrus…

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