And interpretation of ducks embryo development

It is well known that the brooding period, size of chicks and their maturity during hatching period are significantly depend on species birds closely related to genetic factors environmental conditions. The investigation embryonic development model poultry eggs a vivid effective, readily accessible budget-oriented method. article presents data use instru ments equipment (ovarioscope, incubator), characterizes mode duck brooding, shows methods used in incubated - ovaroscopy, anatomization morphometry. aim research was visualize embryonal ducks interpret obtained data. goals our were 1) obtain daily photos development; 2) describe visible changes development, weigh measure embryos. pictures anatomized embryos Peking meat breed ducks, which by photographing from 1st 27th days incubation, presented article. formation increasing cicatricle early stages incubation 4th its describes cardiovascular system branching capillary network day incubation. There first rudimentary feathers tail 10th day, claws 12th egg tooth 14th established 21st there no albumen yolk becoming compact. On 22nd begins retract into abdominal cavity, 25th sac with contents retracted cavity 2/3, eyes embryo begin open. formed, completely eggshell pecking begins. morphometry embryos, showing mass length growth