2021
DOI: 10.3390/ani11030873
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Reproductive Seasonality Affects In Vitro Embryo Production Outcomes in Adult Goats

Abstract: Reproductive seasonality may have a considerable influence on the efficiency of assisted reproductive technologies in seasonal species. This study evaluated the effect of season on cleavage, blastocyst rates and quality of in vitro produced (IVP) goat embryos. In total, 2348 cumulus–oocyte complexes (COCs) were recovered from slaughterhouse ovaries and subjected to the same IVP system throughout 1.5 years (49 replicates). The odds ratio (OR) among seasons was calculated from values of cleavage and blastocyst r… Show more

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Cited by 4 publications
(14 citation statements)
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“…From 25-36 months to the age of >36 months, muscle tissue plays a role in growth. The bone grows continuously with a relatively slow rate of growth and relatively faster muscle growth [23], so the muscle-to-bone ratio increases during growth [24].…”
Section: A Body Weight Of Kacang Goats and Jawarandu Goatsmentioning
confidence: 99%
“…From 25-36 months to the age of >36 months, muscle tissue plays a role in growth. The bone grows continuously with a relatively slow rate of growth and relatively faster muscle growth [23], so the muscle-to-bone ratio increases during growth [24].…”
Section: A Body Weight Of Kacang Goats and Jawarandu Goatsmentioning
confidence: 99%
“…Although MOET is still more predominant (64% vs 36%), the number of IVEP-derived embryos has increased by ~300% from 2019 to 2021 (Figure 1), and the efficiency of producing embryos per doe was quite similar in both techniques [7.7 (MOET) vs 6.4 (IVEP)]. The reasons why MOET remains the main technique for small ruminant embryo production are probably related to species particularities compared to cattle, costs involved, and outcomes (Souza-Fabjan et al, 2021). In general, the IVEP comprises four main steps: (1) the collection of cumulus-oocyte complexes (COCs); (2) COCs in vitro maturation (IVM); (3) in vitro fertilization (IVF), that is the co-cultivation of COCs and sperm; and (4) in vitro culture (IVC) or in vitro development (IVD) of the embryos until the blastocyst stage when they can be transferred to the uterus of synchronized female recipients (with pregnancy rates around 50%) or cryopreserved for future use, according to each production system (Cognié et al, 2004;Souza-Fabjan et al, 2021).…”
Section: Introductionmentioning
confidence: 99%
“…For anatomical reasons, in small ruminants, the ovum pick-up is performed laparoscopically (LOPU). Despite it is considered a minimally invasive technique (Baldassarre, 2012;Souza-Fabjan et al, 2014b), performing LOPU is more expansive and complex than the bovine ovum pick-up (OPU; Souza-Fabjan et al, 2021), which certainly contributes to the lower use of IVEP in small ruminants.…”
Section: Introductionmentioning
confidence: 99%
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