Transvaginal ultrasound‐guided oocyte retrieval in cattle: State‐of‐the‐art and its impact on the in vitro fertilization embryo production outcome

Abstract

Like any other commercial activity, livestock and seedstock producers pursue regular industry objectives: maximize efficiency and productivity, create value and keep the company profitable. To reach these objectives, various reproductive technology tools have been developed for cattle. Artificial insemination (AI) and embryo technologies (in vivo and/or in vitro) contribute to breeding goals and increase farm productivity through the improvement of specific traits by guided mating (Lamb et al., 2016;Moore & Thatcher, 2006). Embryo technologies (superovulation and embryo collection-MOET or in vivo) and, more recently, in vitro embryo production (IVP), are mainly used to multiply high genetic merit females (Ferré et al., 2019;Galli et al., 2003). The idea/goal is to generate bulls and/or bull dams. In commercial farm operations, embryo technologies are also being applied by either implanting sexed embryos

DEVELOPING THE OVUM PICK-UP TECHNOLOGY IN CATTLE: STATE-OF-THE-ART AND RESEARCH DIRECTIONS (review)

“…In this regard, it is of particular interest to increase the efficiency of OPU/IVP in terms of the quantitative and qualitative characteristics of the retrieved cumulus-oocyte complexes (COCs) (L.B. Ferré et al, 2023). To improve the efficiency of OPU, various approaches are used: optimization of the technical parameters of OPU; conducting OPU at a certain stage of follicular growth and development; increasing the number of simultaneously growing and maturing follicles through the use of gonadotropins; the use of biomarkers and DNA-markers for the selection of donor cows.…”

“…Однако многообразие протоколов гормональной обработки и различия в ответе на суперстимуляцию в зависимости от индивидуальных особенностей доноров требуют оптимизации протоколов с учетом породы, возраста и физиологического состояния животных. Перспективно использование биомаркеров(108)(109)(110). Так, R. Kowsar с соавт (111).…”

Long-Term Effects of ART on the Health of the Offspring

“…Studies on different animal models conceived by ICSI have shown an asynchronous remodeling of chromatin decondensation of the male pronucleus in primates, cattle, and mice [123][124][125]. ICSI-conceived mice compared to conventional IVF-conceived counterparts present long-lasting transcriptome disturbances that are maintained until the neonatal stage.…”

<em>In vitro</em> embryos of Romosinuano and Tropical Milking cattle during three seasons in Veracruz, Mexico

“…Ovum pick-up (OPU) and in vitro fertilization (IVF) are used in cattle to accelerate the diaspora of genotypes and genetically superior females [1],furthermore, they enable the multiplication of small populations adapted to adverse environments and even in danger of extinction [2]. OPU-IVF has been successful for Bos taurus breeds in the temperate climatic region and for Bos indicus breeds in the hot climatic tropical region [3,4].…”