MARKETING EGGS 



499 



APPEARANCE OF EGGS ON CANDLING 



(South African Poultry Magazine Candling Chart) 



FIT FOR FOOD 

 FRESH EGG 

 Before the Candle : 



Air Space: Small; less than J^- 

 inch in diameter; edges firm. 



Yolk: Can be dimly seen above 

 middle of egg; it moves slowly 

 when egg is turned. Chick Spot 

 cannot be seen. 



White: Clear and firm. 



Out Of SheU. 



Yolk: Even in color, firm and 

 round. Chick Spot small, with 

 no sign of growth. In an infertile 

 egg the chick spot is exceedingly 

 small. 



White: Firm and thick; flows 

 slowly and glistens. 



STALE OR SHRUNKEN EGG 



Before the Candle. 



Air Space: Always large. Its 

 edges may be wavy. 



Yolk: Easily seen and moves 

 quickly when egg is turned. 



White: Clear but thin. 



Out of Shell. 



Yolk: Flattened, sometimes 

 mottled with deeper colored spots; 

 easily broken. Chick spot either 

 small or enlarged, and generally 

 shrunken. 



White: Watery, with very little 

 thick white; flows freely and does 

 not glisten like a fresh egg. 



Caused by long holding after 

 egg is laid, allowing the egg con- 

 tents to dry out. 



WEAK EGG 



Before the Candle. 



Air Space: But slightly en- 

 larged. 



Yolk: Very easily seen and near 

 the shell. Moves quickly; may 

 have a hatch spot. 



White: Clear and thin. 



Out of Shell. 



Yolk: Flattened. 



White: Thin and watery. This 

 egg occurs most frequently in the 

 summer-time. It is neither stale 

 or shrunken. 



EGG WITH SETTLED YOLK 

 Before the Candle. 



Same as stale egg, except that 

 yolk is in lower half of egg and 

 moves upward when egg is turned 

 before the candle. 



Out of Shell. 



Same as stale egg. 



Caused by long holding. 

 HATCH SPOT EGG 

 Before the Candle. 



Air space is either large or 

 small. 



Yolk is easily seen with a red- 

 dish glow or spot on its upper 

 surface. No blood be seen. 



Out of Shell. 



Chick spot shows signs of 

 development, but no blood. 



Cause: ONE RESULT OF A 

 FERTILE EGG. 



FGG WITH OLIVE YOLK 

 Before Candle and out of Shell. 



Yolk appears dark brown or 

 olive. 



Cause: Not definitely known; 

 may be due to feed of hen. 



EGG WITH MOVABLE CELL 

 Before the Candle. 



Air space moves as egg is 

 turned; when composed of small 



