Bovine Reproduction. Группа авторов

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A Brief History of Embryo Transfer Applications for Embryo Transfer Overview of the Embryo Collection Procedure “Counterfeit Money” Preventing Unwanted or Multiple Pregnancies Helpful Hints Transferring the Embryo Summary Dedication References Resources 84 Selection and Management of the Embryo Recipient Herd Introduction Nutritional Management Estrous Cycle Control Recipient‐Related Factors American Embryo Transfer Association Survey Conclusion Summary References 85 Evaluation of In Vivo Derived Bovine Embryos Introduction History of Bovine Embryo Evaluation Refinement of the Morphological Embryo Evaluation Method History of the IETS Grading and Classification System The Importance of a Good Microscope Normal In Vivo Bovine Embryonic Development IETS Grading and Classification System Stage of Embryonic Development Embryo Quality Grade Embryo Evaluation Procedure Practical Application of Embryo Evaluation Guidelines Non‐Transferable Quality Embryos Unfertilized Ova Dead or Degenerating Embryos Transferable Quality Embryos Extruded Cells Misshapen or Flat Zona Pellucida Lipids in the Cytoplasm Cracked Zona Pellucida Irregular Shape of Cells Comprising the Embryo Material Adhering to the Zona Pellucida Challenges to Accurate Embryo Grading and Classification Embryo Evaluation Tip The Effectiveness of Morphological Embryo Evaluation Conclusion Summary References 86 Control of Embryo‐Borne Pathogens Introduction First Generation of Embryo Technologies Sources of Pathogens Categorization of Pathogenic Agents of Embryos Control of Viral Pathogens Embryo Transfer as a Means of Controlling Pathogen Transmission Second Generation of Embryo Technologies Third Generation of Embryo Technologies Experimental Treatments Summary References 87 Cryopreservation of Bovine Embryos Introduction Cryopreservation Applications for Vitrification Embryo Selection, Handling, and Preparation Embryo Freezing References 88 Managing the “Problem Donor” Introduction The Donor Problems Related to Donors An Alternative for the Problem Donor: in vitro Production of Embryos Summary References 89 In Vitro Fertilization Introduction Collection of Oocytes Media Maturation

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