Embryo technology applied to the conservation of equids

Autor:	A. da S. Mariante, A. Farinasso, C. Faria, A. R. Bem
Rok vydání:	2010
Předmět:	medicine.medical_specialty biology media_common.quotation_subject Embryo General Medicine Crossbreed Surgery Animal science Foal Recovery rate biology.animal Seasonal breeder medicine Donkey Bovine embryo Ovulation media_common
Zdroj:	Equine Veterinary Journal. 21:84-86
ISSN:	2042-3306 0425-1644
DOI:	10.1111/j.2042-3306.1989.tb04686.x
Popis:	Summary With the aim of starting a programme to conserve the Wild Horse of Roraima and the Northeastern Donkey, we adapted techniques used on bovine embryos to these equids. During the breeding season of 1987/88, 120 embryo collection attempts were performed on 11 crossbred donor mares between Days 6 and 8 after ovulation. Most attempts (107) were carried out on Day 6 to give an overall recovery rate of 48.3 per cent. Of 20 Day 6 embryos that were frozen in liquid nitrogen and subsequently thawed, 17 (85 per cent) appeared viable and were transferred non-surgically to recipient mares synchronised to within +1 to −5 days of the embryo donors. This resulted in four pregnancies at Day 60 (23.5 per cent) compared to three pregnancies resulting from the transfer of seven ‘fresh’ unfrozen embryos (43 per cent). Transfer of 10 bisected demi-embryos to individual recipients resulted in one live foal.
Databáze:	OpenAIRE
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