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L-carnitine improves developmental competence of buffalo oocytes in vitro

Asian pacific Journal of Reproduction 2022年第5期11卷 236-242页

作者： Avijit Kumar Modak md nuronnabi islam Asma Khatun md Hasanur Alam Ireen Akter AKM Ahsan Kabir md Abul Hashem Mohammad Moniruzzaman Department of Animal Science Bangladesh Agricultural UniversityMymensingh-2202Bangladesh

Objective:To investigate the effect of L-carnitine on in vitro maturation and subsequent in vitro embryo production of buffalo ***:Cumulus oocyte complexes(COCs)were aspirated from ovaries of slaughtered *** were classified into good and fair qualities based on morphological observation of numbers and integrity of cumulus cells surrounding the *** categories of COCs were placed in in vitro maturation medium with supplementation of different concentrations(0,0.250,0.375 or 0.500 mg/mL)of *** from both qualities were in vitro fertilized and in vitro cultured for 7 days,to examine the developmental ***:Supplementation of L-carnitine to in vitro maturation medium increased the cumulus cell expansion rate of COCs to grade A,and reduced the cumulus cell expansion of COCs to grade B and grade C in both good and fair quality ***,L-carnitine induced the in vitro meiotic progression of buffalo oocytes to metaphaseⅡin both good and fair quality ***,L-carnitine reduced the rate of oocyte degeneration in both good and fair quality oocytes.L-carnitine increased the rate of cleaved formation at day 2 and blastocyst formation at day 7 during in vitro culture in both qualities of ***,a higher rate of blastocyst production was observed in L-carnitine-treated fair quality oocytes,which was higher than the results in the untreated good quality ***:L-carnitine enhances meiotic maturation and subsequent embryo development from both good and fair quality buffalo oocytes.

关键词： Buffalo Cumulus oocyte complex Embryo In vitro maturation In vitro fertilization L-carnitine

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