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Effects of heat stress on development, quality and survival of Bos indicus and Bos taurus embryos produced in vitro
Heat stress is an important cause of poor development and low survival rates in bovine embryos. Experiments were conducted to test the hypothesis that Bos indicus embryos are more resistant to heat stress than are Bos ...
Embryo aggregation does not improve the development of interspecies somatic cell nuclear transfer embryos in the horse
(Elsevier Science Inc, 2016-09)
The low efficiency of interspecies somatic cell nuclear transfer (iSCNT) makes it necessary to investigate new strategies to improve embryonic developmental competence. Embryo aggregation has been successfully applied to ...
Day of collection affects the number of embryos recovery on ewes
Embryos refrozen-thawed by vitrification lead to live births: Case report
Objective: To describe two successful cases of utilizing refrozen blastocysts by vitrification derived from supernumerary embryos. Design: Case report. Setting: Private fertility clinic. Subjects: Two infertility couple. ...
Description and genetic analysis of three sets of monozygotic twins resulting from transfers of single embryos to recipient mares
Case Description-3 sets of monozygotic twins resulting from transfers of single embryos to recipient mares were examined. Clinical Findings-In all 3 recipient mares with twin pregnancies, only 1 embryonic vesicle was ...
Laser-assisted hatching of cryopreserved-thawed embryos by thinning one quarter of the zona
Laser-assisted hatching is little documented in the literature regarding its efficacy in cryopreserved-thawed (CT) embryo transfer cycles. The aim of the present study was to evaluate in a randomized manner the efficacy ...
A simple vitrification technique for sheep and goat embryo cryopreservation
(Elsevier Science, 2011-01)
The aim of this study was to evaluate pregnancy and embryo survival rate of vitrified in vivo produced Merino sheep and Criolla goat (morulae and blastocysts) embryos, using the plastic tips of micropipettes, as containers ...
Best site for embryo transfer: the upper or lower half of endometrial cavity?
(Oxford University Press, 2004-08-01)
BACKGROUND: the objective of the present study was to determine the importance of the site of embryo transfer (upper or lower half endometrial cavity) on implantation and clinical pregnancy rates. METHODS: A total of 400 ...