Using extended growth of cattle embryos in culture to gain insights into bovine developmental events on embryonic days 8 to 10

Isaac, Ekaterina; Berg, Debra K.; Pfeffer, Peter L.

doi:10.1016/j.theriogenology.2023.10.004

Theriogenology

2024

DOI: 10.1016/j.theriogenology.2023.10.004

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Using extended growth of cattle embryos in culture to gain insights into bovine developmental events on embryonic days 8 to 10

Ekaterina Isaac,

Debra K. Berg,

Peter L. Pfeffer

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2024

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Cited by 2 publications

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Bovine embryo production in vitro: evolution of culture media and commercial perspectives

Krisher,

Herrick

2024

Anim. Reprod.

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Bovine embryo production in vitro: evolution of culture media and commercial perspectives

Krisher,

Herrick

2024

Anim. Reprod.

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Impact of Heat Stress on Oocyte Developmental Competence and Pre-Implantation Embryo Viability in Cattle

Gómez-Guzmán,

Parra-Bracamonte,

Velazquez

2024

Animals

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Rectal and vaginal temperatures are utilised in both in vivo and in vitro models to study the effects of heat stress on oocyte competence and embryo viability in cattle. However, uterine temperature increases by only 0.5 °C in heat-stressed cows, significantly lower than simulated increases in in vitro models. Temperature variations within oviducts and ovarian follicles during heat stress are poorly understood or unavailable, and evidence is lacking that oocytes and pre-implantation embryos experience mild (40 °C) or severe (41 °C) heat stress inside the ovarian follicle and the oviduct and uterus, respectively. Gathering detailed temperature data from the reproductive tract and follicles is crucial to accurately assess oocyte competence and embryo viability under realistic heat stress conditions. Potential harm from heat stress on oocytes and embryos may result from reduced nutrient availability (e.g., diminished blood flow to the reproductive tract) or other unidentified mechanisms affecting tissue function rather than direct thermal effects. Refining in vivo stress models in cattle is essential to accurately identify animals truly experiencing heat stress, rather than assuming heat stress exposure as done in most studies. This will improve model reliability and aid in the selection of heat-tolerant animals.

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Using extended growth of cattle embryos in culture to gain insights into bovine developmental events on embryonic days 8 to 10

Cited by 2 publications

References 44 publications

Bovine embryo production in vitro: evolution of culture media and commercial perspectives

Bovine embryo production in vitro: evolution of culture media and commercial perspectives

Impact of Heat Stress on Oocyte Developmental Competence and Pre-Implantation Embryo Viability in Cattle

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