500 



POULTRY CULTURE 



bubbles, indicates egg membrane 

 broken and air mixed with white. 



Out of Shell. 



May be any kind of egg, good 

 or bad. Edible, if good ; inedible, 

 it bad. 



Caused by either long holding 

 or rough handling. 



UNFIT FOR FOOD 

 EGG WITH BLOOD RING 

 Before the Candle. 



Bloody veins, or a whole or 

 partial ring of blood, can be seen 

 on the yolk; sometimes shadow 

 of yolk is shaped like a new moon. 



Out of SheU. 



Blood is seen on yolk, due to 

 developing chick; a later stage 

 than the hatch spot. 



Caused by development of em- 

 bryo in fertile egg. 



Take the Rooster away! Un- 

 fertile eggs cannot form Blood Rings. 



EGG WITH STUCK YOLK 



Before the Candle. 



Yolk has stuck to shell. 

 Out of Shell. 



Yolk breaks with a portion 

 sticking to shell. 



Caused by yolk in stale eggs 

 rising or settling and sticking to 

 shell. 



MOULDY EGG 



Before the Candle. 



Black patches or spots show on 

 inside of shell. They cannot be 

 seen without candling. 



Out of Shell. 



Patches of mould are seen on 

 inside of shell or through the egg. 



Caused by damp nests, washing 

 or holding in damp place, thus 

 allowing mould to enter shell. 



BLACK ROT 



Before the Candle. 



Contents mixed and muddy or 

 black. 



Out of SheU. 



Yolk and white mixed — grayish- 

 yellow in color; stinks. 



Caused by death of embryo, or- 

 mould and decomposition. 



MIXED ROT, WHITE ROT, OR 

 ADDLED EGG 



Before the Candle. 



Yolk and white mixed; yellowish 

 color; portion of yolk may some- 

 times be seen. In advanced stages 

 the yolk outline is entirely gone. 

 It is difficult to distinguish this 

 egg from a fresh egg. 



Out of Shell. 



Yolk and white mixed; light yel- 

 low color. Sometimes sour odor. 



Caused by bacterial decomposi- 

 tion or breaking of yolk and white 

 in stale egg. 



EGG WITH BLOODY WHITE 



Before the Candle. 



General bloody or brown ap- 

 pearance of egg, indicating blood 

 mixed in white. 



Out of Shell. 



Red or brown blood mixed or 

 diffused in white. 



Caused bj^ rupture of ovary or 

 oviduct, allowing blood to enter 

 egg during its formation. 



EGG CONTAINING BLOOD SPOTS 

 OR OTHER FOREIGN BODIES 



Before the Candle. 



Dark spots are seen floating in 

 white or attached to yolk. They 

 must not be confused with the 

 white cords that hold the yolk. 



