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Full-term delivery of river buffalo calves (2n=50) from in vitro-derived vitrified embryos by swamp buffalo recipients (2n=48)


Full-term delivery of river buffalo calves (2n=50) from in vitro-derived vitrified embryos by swamp buffalo recipients (2n=48)



Livestock Science 107(2-3): 213-219



ISSN/ISBN: 1871-1413

DOI: 10.1016/j.livsci.2006.09.022

Field trials were carried out on the use of swamp buffaloes (2n=48) as recipients of in vitro-derived vitrified river buffalo (2n = 50) embryos. River buffalo embryos were produced through a total in vitro production system using frozen semen from a top progeny-tested bull and slaughter-house-derived ovaries and cryopreserved by a vitrification technique. Recipient swamp buffaloes were Philippine carabaos selected on body condition, parity, and reproductive status and owned by village farmers. Eighty post-warmed riverine embryos were transferred non-surgically to 40 swamp buffalo recipients, of which three healthy riverine calves were born by normal delivery and one stillbirth, representing a 5.0% (4/80) full-term development and 10% (4/40) calving rate with 75% (3/4) normal and 25% (1/4) stillbirth. The results demonstrate that, under field conditions and despite the difference in chromosome number between the embryo and recipient, swamp buffaloes are potential surrogate mothers of imported, genetically superior river buffalo frozen embryos. Thus, embryo IVP-vitrification and transfer technology is a potential tool in the propagation of genetically superior buffaloes. Precautionary measures, however, are recommended to avoid dystocia and stillbirth. reserved.

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Accession: 066200993

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