Additionally, one of the objectives of this study is to emphasize the importance of the use of time-lapse cinematography and color Doppler ultrasonography as quick and reliable methods for early detection of pregnancy and embryonic death.
📌 3 Key Takeaways
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Objective & Hypothesis:Despite extensive research on the reproductive health of domestic animals, embryonic mortality continues to be a problem that brings about significant losses for both commercial breeding and scientific research.
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Key Findings & Data:This review paper discusses the genetic and environmental factors that affect embryo mortality rates in sheep along with the different techniques developed to overcome this issue.
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Conclusion & Impact:Additionally, one of the objectives of this study is to emphasize the importance of the use of time-lapse cinematography and color Doppler ultrasonography as quick and reliable methods for early detection of pregnancy and embryonic death.
🔬Design:Review & Systematic Survey
📍Scope:Comprehensive Sample
⚙️Variables:Embryo · mortality · sheep
Abstract
Despite extensive research on the reproductive health of domestic animals, embryonic mortality continues to be a problem that brings about significant losses for both commercial breeding and scientific research. This review paper discusses the genetic and environmental factors that affect embryo mortality rates in sheep along with the different techniques developed to overcome this issue. Additionally, one of the objectives of this study is to emphasize the importance of the use of time-lapse cinematography and color Doppler ultrasonography as quick and reliable methods for early detection of pregnancy and embryonic death.
de Kretser DM, Loveland KL, Meinhardt A, Simorangkir D, Wreford N. Spermatogenesis. Human Reproduction 1998
13 (1): 1-8. doi: 10.1093/humrep/13.suppl_1.1 2. Schuetz WA. Local control mechanisms during oogenesis and folliculogenesis. In: Browder LW (editor). Developmental Biology. A Comprehensive Synthesis. Volume 1, 1st Ed. New York, NY, USA: Plenum Press
pp. 3-73. doi: 10.1007/978- 1-4615-6814-8 3. Dai K, Gillies CB, Dollin AE. Synaptonemal complex analysis of domestic sheep (Ovis aries) with Robertsonian translocations. II. Trivalent and pairing abnormalities in Massey I and Massey II heterozygotes. Genome 1994
37 (4): 679-689. doi: 10.1139/ g94-096 4. Long SE, Williams CV. Frequency of chromosomal abnormalities in early embryos of the domestic sheep (Ovis aries). Reproduction 1980
58 (1): 197-201. doi: 10.1530/ jrf.0.0580197 5. Murray JD, Boland MP, Moran C, Sutton R, Nancarrow CD et al. Occurrence of haploid and haploid/ diploid mosaic embryos in untreated and androstenedione-immune Australian Merino sheep. Journal of Reproduction and Fertility 1985
74 (2): 551- 555. doi: 10.1530/jrf.0.0740551 6. Perkel KJ, Tscherner A, Merrill C, Lamarre J, Madan P. The ART of selecting the best embryo: a review of early embryonic mortality and bovine embryo viability assessment methods. Molecular Reproduction & Development 2015
82 (11): 822- 838. doi: 10.1002/mrd.22525 7. Bolet G. Timing and extent of embryonic mortality in pigs, sheep and goats: genetic variability. In: Sreenan JM, Diskin MG (editors). Embryonic Mortality in Farm Animals. Current Topics in Veterinary Medicine and Animal Science, Vol 34. Dordrecht, the Netherlands: Springer
pp. 12-43. doi: 10.1007/978-94-009-5038-2 8. Dupont C, Segars J, DeCherney A, Bavister BD, Armant DR et al. Incidence of chromosomal mosaicism in morphologically normal non-human primate preimplantation embryos. Fertility and Sterility 2010
93 (8): 2545-2550. doi: 10.1016/j. fertnstert.2009.06.040 9. Coppola G, Alexander B, Di Berardino D, St John E, Basrur PK et al. Use of cross-species in-situ hybridization (ZOOFISH) to assess chromosome abnormalities in day-6 in-vivoor in-vitro-produced sheep embryos. Chromosome Research 2007
15 (3): 399-408. doi: 10.1007/s10577-007-1125-2 10. Abdel-Mageed II, Abd El-Gawad MH. Does parity and nutrition in early pregnancy affect viability of embryos in both Rahmani and Barki Egyptian sheep? Asian Journal of Animal and Veterinary Advances 2015