Asian-Australasian Journal of Animal Sciences

Asian Australasian Association of Animal Production Societies (아세아태평양축산학회)
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A Timetable of the Early Development Stage of Silkies Embryo

  • Li, B.C. (College of Animal Science and Veterinary Medicine, Yangzhou-University) ;
  • Chen, G.H. (College of Animal Science and Veterinary Medicine, Yangzhou-University) ;
  • Qin, J. (College of Animal Science and Veterinary Medicine, Yangzhou-University) ;
  • Wang, K.H. (Institute of Poultry Science of Jiangsu Province) ;
  • Xiao, X.J. (College of Animal Science and Veterinary Medicine, Yangzhou-University) ;
  • Xie, K.Z. (College of Animal Science and Veterinary Medicine, Yangzhou-University) ;
  • Wu, X.S. (College of Animal Science and Veterinary Medicine, Yangzhou-University)
  • Received : 2002.08.16
  • Accepted : 2002.12.26
  • Published : 2003.06.01
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Abstract

The early embryos are obtained in different time after the former egg had been laid, and the aim of the present study was to observe the development law of chicken early embryo.The embryo development has been divided into the two periods according to morphology of blastodisc. Cleavage period, from 5.5 h (0 h uterine age) to 15.5 h (10-10.5 h uterine age) after the former egg had laid, formation blastodisc of 6-7 layers cell. Later blastocyst period, from 17.5 h (12-12.5 h uterine age) to area pellucida formation after the former egg had been laid. The first division took place at 5 h (0 h uterine age), morular at 11.5 h (6-6.5 h uterine age), and blastocyst at 15.5 h (10-10.5 h uterine age) after the former egg had been laid.

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