Reciprocal fertilization between the domesticated rabbit and the snowshoe hare with special reference to insemination of rabbits with an equal number of hare and rabbit spermatozoa

Chang, M. C.; Marston, J. H.; Hunt, Dorothy M.

doi:10.1002/jez.1401550312

Cited by 25 publications

(11 citation statements)

References 7 publications

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“…A similar experimental series with rabbits inseminated with semen from the hare Lepus europaeus yielded blastocysts but no implantation (Adams, 1957;Chang and Adams, 1962). When rabbits were inseminated with the semen of the hare L. americanus, there were essentially the same findings (Chang et al, 1964;Chang, 1965). (See also the review by Chang and Hancock, 1967.)…”

Section: Protein Synthesis and Gene Actionmentioning

confidence: 62%

Pre-Implantation Development

Austin¹

1994

Marshall’s Physiology of Reproduction

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Section: Protein Synthesis and Gene Actionmentioning

confidence: 62%

Pre-Implantation Development

Austin¹

1994

Marshall’s Physiology of Reproduction

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“…In the dromedary camel, gestation length is 365-410 days (Chaudhary 2000). It is suggested that successful hybridisation between two species depends on the ability of the sperm of one species to bind to the oocyte of the other species (Chang et al 1964;Hancock and McGovern 1964;Hancock et al 1968;Allen and Short 1997). In addition, it has been determined that, in fertilised eggs, the paternal genome is essential for the normal development of extraembryonic tissue and the maternal genome is essential for some stages of embryogenesis (Barton et al 1985).…”

Section: Discussionmentioning

confidence: 99%

Interspecies embryo transfer in camelids: the birth of the first Bactrian camel calves (Camelus bactrianus) from dromedary camels (Camelus dromedarius)

Niasari-Naslaji¹,

Nikjou²,

Skidmore³

et al. 2009

Reprod. Fertil. Dev.

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Interspecies embryo transfer is a possible approach that can be used to conserve endangered species. It could provide a useful technique to preserve the Iranian and wild Bactrian camels, both of which are threatened with extinction. In the present study, one Bactrian camel was superovulated using decreasing doses of FSH (60, 40, 30, 30, 20, 20 mg, b.i.d.; Folltropin-V; Bioniche, London, ON, Canada) for 6 days, followed by a single injection of FSH (20 mg, i.m.) on Day 7. Daily ovarian ultrasonography was performed until most of the growing follicles had reached a mature size of 13-17 mm, at which time the camel was mated twice, 24 h apart, with a fertile male Bactrian camel. At the time of first mating, female camels were given 20 microg, i.v., buserelin (Receptal; Intervet, Boxmeer, The Netherlands). One day after the donor camel had been mated, the dromedary recipients (n = 8) were injected with 25 mg, i.v., porcine LH (Lutropin-V; Bioniche) to induce ovulation. Embryos were recovered on Day 8.5 after the first mating and transferred non-surgically into recipients on Day 7.5 after LH injection. Pregnancy was diagnosed 25 days after embryo transfer. Healthy Bactrian camel calves (n = 4) were born without any particular complications at the time of parturition (e.g. dystocia and neonatal diseases). The present study is the first report of the birth of Bactrian camel calves from dromedary camels, as well as the first report of interspecies embryo transfer in old world camelids.

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“…For example, high fertilization rates are achieved when inseminating female goats with ram semen, but many fewer conceptions occur when reciprocally inseminating ewes with goat semen (Hancock and McGovern 1964;Hancock et al 1968). Similarly, hybrid matings between the hare (Lepus americanos) and the rabbit (Oryotolagus cuniculus) produce high rates of fertilization when rabbits are inseminated with hare semen, whereas less than 10% of hare oocytes are fertilized by rabbit semen (Chang et al 1964). In addition, inseminating a horse mare with Jack donkey semen to produce a mule, is as fertile as the straightforward intraspecies mating between either parental species, whereas the reciprocal cross between the female donkey and the male horse is very much less fertile (Allen and Short 1997).…”

Section: Discussionmentioning

confidence: 99%

Assisted reproductive techniques for hybridization of camelids

Skidmore¹,

Billah²,

Short³

et al. 2001

Reprod. Fertil. Dev.

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The camelid family comprises the Old World camelids (or dromedary and Bactrian camels) and the New World camelids (namely the llamas, alpacas, guanacos and vicunas). Although the species within each group can hybridize among themselves to produce fertile offspring, it is only recently that a hybrid between New and Old World camelids has been reported. To create this hybrid, semen was collected from male camels by artificial vagina (AV) and inseminated into female guanacos (n = 9) and llamas (n = 3) at the appropriate stage of their follicular wave cycle. Similarly, guanaco and llama semen was collected, also by AV, and inseminated into female camels (n = 42). Although several conceptions occurred, only one hybrid (camel sire x guanaco dam) continued to term and was born alive after 328 days of gestation, and another is pregnant at the time of writing (camel sire x llama dam). Further studies are presently being carried out using extraspecific embryo transfer to try and improve the success rate of live offspring being born. Female guanacos (n = 4) are treated with hormones to stimulate their ovaries to produce several follicles before being inseminated with camel semen. Of the 12 camel recipients that have to date received hybrid embryos (camel sire x guanaco dam), 10 conceived, but 9 of these subsequently aborted between 30 and 365 days and only one recipient was still pregnant at the time of writing.

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Reciprocal fertilization between the domesticated rabbit and the snowshoe hare with special reference to insemination of rabbits with an equal number of hare and rabbit spermatozoa

Cited by 25 publications

References 7 publications

Pre-Implantation Development

Pre-Implantation Development

Interspecies embryo transfer in camelids: the birth of the first Bactrian camel calves (Camelus bactrianus) from dromedary camels (Camelus dromedarius)

Assisted reproductive techniques for hybridization of camelids

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