Effect of body condition on the developmental competence of IVM/IVF bovine oocytes

Ruiz, L.López; Alvarez, Natalia V.; Nuñez, I.; Montes, I.; Solano, R.; Fuentes, Daniel; Pedroso, Renata Valle; Palma, G.A.; Brem, Gottfried

doi:10.1016/0093-691x(96)84765-0

Cited by 5 publications

(2 citation statements)

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“…These contrasting results could be partially related to the low blastocyst production achieved from oocytes cleaved (14.7 to 18.9%) in experimental groups in the latter study, suggesting that in vitro conditions can sometimes mask the effects of BCS on oocyte developmental competence [68]. Nevertheless, a previous study using a similar experimental approach reported impaired IVEP in Holstein × Zebu cows with a BCS of 1 compared with oocyte donors with a BCS of 2-3 [74]. Moreover, dairy cows with a BCS of 1.5-2.5 produced oocytes with a lower capacity to achieve the blastocyst stage in vitro than oocytes from cows with a BCS of 3-4 [75].…”

Section: Impact Of Dietary Intake Of Bovine Oocyte Donors On In Vitro...mentioning

confidence: 58%

Nutritional Strategies to Promote Bovine Oocyte Quality for In Vitro Embryo Production: Do They Really Work?

Velazquez

2023

Veterinary Sciences

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The ability of bovine oocytes to reach the blastocyst stage (i.e., embryo with around 150 cells in cattle) in vitro can be affected by technical (e.g., culture medium used) and physiological factors in oocyte donors (e.g., age, breed). As such, the nutritional status of oocyte donors plays a significant role in the efficiency of in vitro embryo production (IVEP), and several nutritional strategies have been investigated in cattle subjected to ovum pick-up (OPU). However, there is no clear consensus on the reliability of nutritional schemes to improve IVEP in cattle. Available evidence suggests that a moderate body condition score (i.e., 3 in a 1–5 scale) in cattle is compatible with a metabolic microenvironment in ovarian follicles that will promote embryo formation in vitro. The usefulness of fatty acid and micronutrient supplementation to improve IVEP in cattle is debatable with the current information available. Overall, the supply of maintenance nutritional requirements according to developmental and productive stage seems to be enough to provide bovine oocyte donors with a good chance of producing embryos in vitro. Future nutrition research in cattle using OPU-IVEP models needs to consider animal well-being aspects (i.e., stress caused by handling and sampling), which could affect the results.

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Section: Impact Of Dietary Intake Of Bovine Oocyte Donors On In Vitro...mentioning

confidence: 58%

Nutritional Strategies to Promote Bovine Oocyte Quality for In Vitro Embryo Production: Do They Really Work?

Velazquez

2023

Veterinary Sciences

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“…Nutritional status affects follicular development and ovulation with its role in hypothalamus, hypophysis and ovarian activity (Armstrong et al 2003). Furthermore, malnutrition has negative effects on the body condition score (BCS), in vitro developmental adequacy of the oocytes collected from the donor animal, and blastocyst rate (Dominguez 1995;Ruiz et al 1996).…”

Section: Nutritional Status Of the Donor Animalmentioning

confidence: 99%

Ovum Pick Up (Opu) by Transvaginal Ultrasonography in Cattle

2022

Int J Vet Sci

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Transvaginale ultraschallgestützte Eizellenentnahme (OPU: Ovum Pick-Up) bei Kühen und Stuten

Bols,

Stout

2023

Biotechnologie Bei Nutztieren 1

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Effect of body condition on the developmental competence of IVM/IVF bovine oocytes

Cited by 5 publications

References 0 publications

Nutritional Strategies to Promote Bovine Oocyte Quality for In Vitro Embryo Production: Do They Really Work?

Nutritional Strategies to Promote Bovine Oocyte Quality for In Vitro Embryo Production: Do They Really Work?

Ovum Pick Up (Opu) by Transvaginal Ultrasonography in Cattle

Transvaginale ultraschallgestützte Eizellenentnahme (OPU: Ovum Pick-Up) bei Kühen und Stuten

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