With confidence to define whether egg is impregnated, it is necessary to know signs of formation and activity of an embryo. Councils of poultry breeders will be prompted how to distinguish a live germ from the dead.
Instruction
1. Chicken – the most popular bird in country and farms. Cultivation of this bird allows to solve two problems at once: providing with meat and egg. Therefore for the owner it is important to know how to distinguish an oosperm from not impregnated.
2. The devices and devices helping with check of eggs. For this purpose there is a special device released by the domestic industry – ovoskop. It is small capacity with deepenings for laying of eggs and the illumination located at the bottom. If there is no such device in economy, it can be replaced self-made or to use the usual piece of thin cardboard curtailed into a tube 2-3 cm thick. One end it needs to be put to the egg brought to a light source, and from the second to examine its contents.
3. How to learn whether egg is impregnated? Whether there is in egg a germ, with confidence it is possible to define not earlier than for the 6th day after the beginning of an incubation. When raying on the earliest terms (4-5 days) the darkened area without clear boundary of the size of a match head which when turning egg moves after a yolk across can be visible, lagging behind it on rotation speed a little. Poultry breeders claim that if this area looks as letter "O", that is, the spot contour is more expressed, so egg is impregnated. If the spot is darkened completely, then is not present.
4. For 6-7 days in thinner end of egg there is obviously noticeable a network of the thin blood vessels close to a yolk the air chamber is accurately visible. The germinal disk (blastoderm) reaches the sizes of 5-8 mm, gets more accurate outlines and still looks as quite dark stain. If blood impregnations are chaotically located in contents, it is sign that there is no germ or he died. Consider eggs the sharp end down, slowly turning them clockwise.
5. For 7-10 day it is possible to define authentically whether the baby bird is alive. If it correctly develops, the yolk becomes more pale. The embryonic activity is resulted by air exchange and around a germ the light yellow ring is formed. It looks as a dark stain of irregular shape with accurately expressed borders. For the 18th day by means of a medical stethoscope it is possible to hear heartbeat of a fruit.