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Asian-Australas J Anim Sci > Volume 4(1); 1991 > Article
Animal Reproduction and Physiology
Asian-Australasian Journal of Animal Sciences 1991;4(1): 73-78.
DOI: https://doi.org/10.5713/ajas.1991.73    Published online March 1, 1991.
In vivo development and microinjection of rabbit zygotes
J. C. Ju, S. P. Cheng, P. C. Tarng, K. B. Choo
Sixty-one 5-11 month-old California, Chinchilla and New Zealand White rabbit were employed in this investigation. Thirty-three does were superovulated by injecting FSH/HCG subcutaneously or intravenously and then sacrificed at different hours after mating. The ova were collected from the fallopian tubes with Ham`s F-10 medium supplemented with 0.4% bovine serum albumin (BSA) and 1% pregnant rabbit serum (PRS). Embryos were examined under an inverted DIC microscopy for observing the stage of development. We have found that the fertilized ova formed pronuclei at 19 - 20 hr postcoitus. Approximately at 26, 64 - 78 and 84 - 88 hr after mating, the fertilized ova cleaved further to 2-cell, morulae and blastocyst stage respectively. Another 28 does were allocated to the gene transfer study. Fourteen of the 28 does were sacrificed at 19 - 20 hr to donate the pronuclear stage ova for gene injection. The other 14 does were induced to pseudopreganacy by injection of 100 IU HCG intravenous as recipients. Four hundreds and seventeen ova were injected totally and 212 gene injected zygotes were transferred into the recipient oviducts. Five recipients became pregnant and 10 fetuses were obtained. Eight of the 10 fetuses were analysed for gene incorporation, but none of them were transgenic.
Keywords: Microinjection; In Vivo Development; Rabbit Zygotes
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