4.6 Review

Factors Influencing the Maturation and Developmental Competence of Yak (Bos grunniens) Oocytes In Vitro

Journal

GENES
Volume 14, Issue 10, Pages -

Publisher

MDPI
DOI: 10.3390/genes14101882

Keywords

yak; oocyte; in vitro maturation; embryo development

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This review summarizes the factors affecting the in vitro maturation and developmental ability of yak oocytes in recent years, providing a theoretical basis for in vitro fertilization and embryo production in yaks.
The yak (Bos grunniens) is a unique breed living on the Qinghai-Tibet Plateau and its surrounding areas, providing locals with a variety of vital means of living and production. However, the yak has poor sexual maturity and low fertility. High-quality mature oocytes are the basis of animal breeding technology. Recently, in vitro culturing of oocytes and embryo engineering technology have been applied to yak breeding. However, compared to those observed in vivo, the maturation rate and developmental capacity of in vitro oocytes are still low, which severely limits the application of in vitro fertilization and embryo production in yaks. This review summarizes the endogenous and exogenous factors affecting the in vitro maturation (IVM) and developmental ability of yak oocytes reported in recent years and provides a theoretical basis for obtaining high-quality oocytes for in vitro fertilization and embryo production in yaks.

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