Comparison between in vitro embryo production in Bos indicus and Bos taurus cows

Moschini, Graziela Alves de Lima; Gaitkoski, D.; Almeida, Ana Beatriz Marques de; Hidalgo, Myrian Megumy Tsunokawa; Martins, Maria Isabel Mello; Blaschi, Wanessa; Barreiros, Thales Ricardo Rigo

doi:10.33448/rsd-v10i7.16712

Cited by 5 publications

(1 citation statement)

References 33 publications

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“…The lack of the initial positive effect of a high energy intake on IVEP production in Holstein cows could be related to an increase in the antral follicle population usually present in Bos indicus cattle compared to Bos taurus breeds such as Holstein cattle [84,85]. Indeed, lower oocyte collection and IVEP has been reported in Holstein cattle compared to Bos indicus breeds, including Gir cattle [22,86,87]. Furthermore, oocytes from Holstein cows displayed a higher level of apoptosis compared to Gir cows [22], which could have masked the effects of energy consumption on IVEP.…”

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

confidence: 99%

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: 99%

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

Velazquez

2023

Veterinary Sciences

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Effect of the addition of IGF-1 during in vitro culture on the embryonic development speed from different crossbreed bovine embryos

Carrillo-Gonzalez,

Hernández-Herrera,

Medina-Montes

et al. 2024

Trop Anim Health Prod

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Genetic parameters of in vitro production of Nellore and Senepol embryos

Pinheiro,

Carneiro Junior,

Satrapa

et al. 2024

Ciênc. anim. bras.

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This study aimed to estimate genetic parameters for traits of in vitro embryo production (IVEP) of Nellore and Senepol cattle. Data from 1,247 rounds of in vitro fertilization (1,029 Nellore, 218 Senepol) were used, totaling 148,311 oocytes (116,972 Nellore, 31,339 Senepol), 47,301 embryos (38,722 Nellore, 8,579 Senepol), and 6,323 pregnancies (5,534 Nellore, 789 Senepol). The variables percentage of viable oocytes (Pooc), percentage of cleaved embryos (Pcleav), percentage of produced embryos (Pemb), percentage of pregnancy (Ppreg) per round per bull, mean number of viable oocytes per donor (MOD), mean number of embryos produced per donor (MED), and mean number of pregnancies per donor (MPD) were analyzed from data provided by a partner company between the years 2019 and 2022. The SAS program was used to analyze fixed effects and Pearson linear correlation. The components of variance for heritabilities were calculated using the MTDFREML program. MOD, MED, and MPD values of 29.94, 10.01, and 2.53 were obtained for Nellore and 30.12, 8.17, and 2.34 for Senepol, respectively. In general, Nellore provided better embryo production compared to Senepol. Heritability estimates showed low to medium magnitude, with values Nellore and Senepol of 0.16 and 0.04 (Pcleav), 0.14 and 0.08 (Pemb), 0.02 and 0.15 (Ppreg), 0.07 and 0.02 (MED), and 0.05 and 0.00 (MPD), respectively. However, it indicates the presence of genetic variability and the possibility of selection. Therefore, there is genetic variability for IVEP traits in both breeds, indicating that they can be used as selection criteria because they are heritable and that Nellore presents better performance for IVEP traits compared to Senepol.

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Comparison between in vitro embryo production in Bos indicus and Bos taurus cows

Cited by 5 publications

References 33 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?

Effect of the addition of IGF-1 during in vitro culture on the embryonic development speed from different crossbreed bovine embryos

Genetic parameters of in vitro production of Nellore and Senepol embryos

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