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001-es BibID:	BIBFORM117792
Első szerző:	Mujitaba, Malam Abulbashar
Cím:	In vitro conservation of gametes: the way forward to conserve the genetic resources of autochthonous sheep breeds / Malam Abulbashar Mujitaba, Gabriella Kútvölgyi, István Egerszegi, Nóra Vass, Szilárd Bodó
Dátum:	2023
ISSN:	1786-8440
Megjegyzések:	Assisted reproductive technologies (ARTs) significantly improved livestock productivity and reproductive performance and enabled elite parents to produce thousands of offspring globally. However, indiscriminate use ARTs, lack of information and materials on autochthonous sheep breeds (ASB) resulted in a loss of their genetic resources (GnR), thus shooting up the number of at- risk and extinct ASB globally. This problem is more in Europe and the Caucasus region, Africa, and Asia, according to the FAO 2005, 2017, and Sustainable Development Goals, 2022 reports. Considering the current economic challenges, in vivo gene conservation (INGC) is expensive and less sustainable. Therefore, an in vitro gene conservation (IVGC) can supplement the INGC for better efficiency and sustainability. The current review explored the pros and cons of ARTs on ASB's GnR, the need to conserve their GnR through IVGC, and the prospects of the IVGC on ASB's GnR conservation. Interestingly, Vitrification with reduced volume (e.g., cryotop) is the leading technique in oocyte cryopreservation, as it results in lower cryoprotectants toxicity, better oocyte viability, and pregnancy rates aside from being cheap and field-friendly than the other vitrification techniques. With oocyte and spermatozoa cryopreservation from the same breed, an extinct breed of interest can be regenerated in a single generation. However, oocyte cryopreservation holds a considerable prospect in IVGC, but the technique in sheep still needs improvements.
Tárgyszavak:	Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény hazai lapban folyóiratcikk Sheep Cryopreservation Oocytes Control Slow Rate Freezing Vitrification Assisted Reproductive Technologies
Megjelenés:	Animal welfare, ethology and housing systems. - 19 : 1 (2023), p. 118-125. -
További szerzők:	Kútvölgyi Gabriella Egerszegi István Vass Nóra (1983-) (állatorvos) Bodó Szilárd
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001-es BibID:	BIBFORM112761
035-os BibID:	(cikkazonosító)2001 (WOS)000900230700001 (Scopus)85144717883
Első szerző:	Mujitaba, Malam Abulbashar
Cím:	Alternative Opportunities to Collect Semen and Sperm Cells for Ex Situ In Vitro Gene Conservation in Sheep / Malam Abulbashar Mujitaba, István Egerszegi, Gabriella Kútvölgyi, Szabolcs Nagy, Nóra Vass, Szilárd Bodó
Dátum:	2022
ISSN:	0551-3677 1338-4376
Megjegyzések:	The semen of domestic mammals is conventionally collected with an artificial vagina (AV) for artificial insemination (AI) or for short- or long-term storage. However, the procedure has certain drawbacks: animal training is not feasible in extensive animal care systems nor among wild species, as the trained animals sometimes fail to mount. Hence, there is a need for alternative semen collection methods. Electroejaculation (EEJ) and epididymal sperm recovery (ESR) are the two effective alternatives to AV. However, in recent years, animal welfare campaigners have called for the ban, in certain EU countries, of EEJ due to its inhumane nature. In this review, alternative methods of sperm collection (by EEJ and ESR, their qualities, and their freezing techniques) are highlighted, as well as the effects of EEJ on pre-freeze and post-thaw ram sperm quality parameters and the animal welfare progress made in EEJ between the 20th and 21st centuries. Additionally, the techniques for enhancing post-thaw sperm quality prior to freezing and for the freezing of EEJ and ESR spermatozoa are explored. ESR and EEJ are reliable alternatives to AV on certain occasions. EEJ is ideal for semen collection in wild or untrained animals, breeding soundness examinations, collection outside of the breeding season, and culling. At the same time, ESR is ideal in cases of castration, accidental death of elite sire, or postmortem for gene conservation purposes or assisted reproductive technologies (ARTs) studies.
Tárgyszavak:	Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk ram semen collection semen quality epididymis animal welfare artificial vagina ex situ in vitro gene conservation
Megjelenés:	Agriculture-Basel. - 12 : 12 (2022), p. 1-17. -
További szerzők:	Egerszegi István Kútvölgyi Gabriella Nagy Szabolcs Vass Nóra (1983-) (állatorvos) Bodó Szilárd
Pályázati támogatás:	EFOP-3.6.2-16-2017-00001 EFOP Stipendium Hungaricum Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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