Effect of Epidermal Growth Factors (EGF) on the Maturation and Developmental Competence of Buffalos’ Oocytes and Embryo Stages In Vitro
Yousef, N., Hussein, H., Badr, M., Ezzat, A. (2018). Effect of Epidermal Growth Factors (EGF) on the Maturation and Developmental Competence of Buffalos’ Oocytes and Embryo Stages In Vitro. EKB Journal Management System, 1(2), 85-94. doi: 10.21608/svu.2018.19870
Nasra A. Yousef; Hassan A. Hussein; Magdy R. Badr; Ahmed Ezzat. "Effect of Epidermal Growth Factors (EGF) on the Maturation and Developmental Competence of Buffalos’ Oocytes and Embryo Stages In Vitro". EKB Journal Management System, 1, 2, 2018, 85-94. doi: 10.21608/svu.2018.19870
Yousef, N., Hussein, H., Badr, M., Ezzat, A. (2018). 'Effect of Epidermal Growth Factors (EGF) on the Maturation and Developmental Competence of Buffalos’ Oocytes and Embryo Stages In Vitro', EKB Journal Management System, 1(2), pp. 85-94. doi: 10.21608/svu.2018.19870
Yousef, N., Hussein, H., Badr, M., Ezzat, A. Effect of Epidermal Growth Factors (EGF) on the Maturation and Developmental Competence of Buffalos’ Oocytes and Embryo Stages In Vitro. EKB Journal Management System, 2018; 1(2): 85-94. doi: 10.21608/svu.2018.19870

Effect of Epidermal Growth Factors (EGF) on the Maturation and Developmental Competence of Buffalos’ Oocytes and Embryo Stages In Vitro

SVU-International Journal of Veterinary Sciences
Article 9, Volume 1, Issue 2, December 2018, Page 85-94  XML PDF (678.37 K)
Document Type: Research article
DOI: 10.21608/svu.2018.19870
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Authors
Nasra A. Yousef1; Hassan A. Hussein2; Magdy R. Badr email 3; Ahmed Ezzat4, 5
1Department of Theriogenology, Faculty of Veterinary Medicine, South Valley University, 83523, Qena, Egypt
2Department of Theriogenology, Faculty of Veterinary Medicine, Assuit University,71515, Assuit, Egypt
3Animal Reproduction Research Institute (ARRI), ELHaram, Giza, Egypt
4Department of Theriogenology, Faculty of Veterinary Medicine, South Valley University, 83523 , Qena, Egypt
5Biology Department, Faculty of Science, King Khalid University, 61413 Abha, Saudi Arabia.
Abstract
The present study aims to study the effects of epidermal growth factors (EGF) supplementations to the in vitro maturation (IVM) medium of buffalo's oocytes on the oocyte maturation rate and embryo development competence. The ovaries were collected from El-Monieb slaughters house and transferred directly to the laboratory for the experiment processing. Excellent and good cumulus oocytes complexes (COCs) were aspirated from 3-8 mm diameter follicles. TCM-199 medium were used for in vitro maturation. In experiment I, COCs were incubated in EGF-containing IVM medium as; 0 (control or CTL), 10, 20 and 50 ng/ml EGF for 24 hrs at 38.5°C in humidified environment; 5% CO2 and 95% humidity. In experiment II, COCs were incubated in vitro fertilization (IVF) medium as; 0 (control or CTL), 10, 20 and 50 ng/ml EGF for 24 hrs in the same condition. In experiment III, COCs were incubated in vitro culture (IVC) medium as; 0 (control or CTL), 10, 20 and 50 ng/ml EGF for 24 hrs in the same condition. According to the expansion of oocytes and attaining the developmental embryo stages of morula and blastocyst, our results have shown that addition of 20 ng/ml of EGF to the IVM medium significantly increased the oocyte maturation and fertilization rates compared to those of CTL (76.96 ± 9.04 vs. 51.3 ± 4.66 and 67.96 ± 2.76 vs. 42.03 ± 4.83 %, respectively) (P<0.05). On the other hand, Addition of 20 ng/ml of EGF to the IVM medium significantly increased the fertilization rates compared to other concentrations (10 and 50 ng/ml) (67.96 ± 02.76 vs. 49.43 ± 03.67 and 34.70 ± 01.40, respectively). However, the developmental rates to morula and blastocyst stages in response to addition to IVC medium variably increased rather than those of control despite no significance.   
Keywords
Bubalus bubalis,; Buffalo; EGF; IVM; oocytes
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