Current status of the intrafollicular transfer of immature oocytes (IFIOT) in cattle: A review

IF 2.2 2区农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE Animal Reproduction Science Pub Date : 2024-06-06 DOI:10.1016/j.anireprosci.2024.107523

Ana Caroline Chaves Vall Nicolás , Margot Alves Nunes Dode

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Abstract

Intrafollicular Transfer of Immature Oocytes (IFIOT) has emerged as an alternative to the currently used systems for bovine embryo production. This technique associates the rapid multiplication of bovine females under a completely in vivo culture condition, eliminating the need for superstimulatory hormones in the in vivo system (IVD) and the costly laboratory setup required for in vitro embryo production (IVP). Despite being a promising technique, the results obtained to date have been unsatisfactory for commercial use. Only approximately 10 % –12 % of viable embryos are recovered from the total number of injected oocytes, which limits their use in genetic improvement programs. IFIOT problems can occur in any of the steps involved; therefore, each step must be carefully examined to identify those that have the most negative impact on the final embryo recovery. This review summarizes the different studies conducted using the IFIOT to provide a comprehensive analysis of the main factors that can influence the effectiveness of this technique.

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牛卵泡内移植未成熟卵母细胞 (IFIOT) 的现状：综述

卵泡内未成熟卵母细胞移植（IFIOT）已成为目前使用的牛胚胎生产系统的替代技术。这种技术可在完全体内培养的条件下快速繁殖牛雌性细胞，无需在体内系统（IVD）中使用超刺激激素，也无需在体外胚胎生产（IVP）中进行昂贵的实验室设置。尽管这是一项前景广阔的技术，但迄今为止所取得的商业应用结果并不令人满意。在所有注射的卵母细胞中，只有约 10% -12% 的胚胎能够存活，这限制了它们在遗传改良计划中的应用。IFIOT 问题可能发生在任何相关步骤中；因此，必须仔细检查每个步骤，以确定对最终胚胎回收产生最大负面影响的步骤。本综述总结了使用 IFIOT 进行的不同研究，对影响该技术有效性的主要因素进行了全面分析。

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来源期刊

Animal Reproduction Science 农林科学-奶制品与动物科学

CiteScore

4.50

自引率

9.10%

发文量

136

审稿时长

54 days

期刊介绍： Animal Reproduction Science publishes results from studies relating to reproduction and fertility in animals. This includes both fundamental research and applied studies, including management practices that increase our understanding of the biology and manipulation of reproduction. Manuscripts should go into depth in the mechanisms involved in the research reported, rather than a give a mere description of findings. The focus is on animals that are useful to humans including food- and fibre-producing; companion/recreational; captive; and endangered species including zoo animals, but excluding laboratory animals unless the results of the study provide new information that impacts the basic understanding of the biology or manipulation of reproduction. The journal''s scope includes the study of reproductive physiology and endocrinology, reproductive cycles, natural and artificial control of reproduction, preservation and use of gametes and embryos, pregnancy and parturition, infertility and sterility, diagnostic and therapeutic techniques. The Editorial Board of Animal Reproduction Science has decided not to publish papers in which there is an exclusive examination of the in vitro development of oocytes and embryos; however, there will be consideration of papers that include in vitro studies where the source of the oocytes and/or development of the embryos beyond the blastocyst stage is part of the experimental design.