OCR Text |
Show CANDLE EGGS TO TELL CONDITION Appearance of Egg Shell Not Reliable Re-liable Indication of Quality of Contents. EQUIPMENT IS EASILY MADE brdinary Hand Lamp, Lantern, Incandescent Incan-descent Bulb or Flashlight May Be Used Necessary That Work Be Done In Dark Room. The poultry raiser with a small Hock as well as the commercial raiser needs to make sure that the eggs used at home or marketed are In best condition. con-dition. Candling will show that. It is reliable and can be done easily. Kqulp-m. Kqulp-m. m can be improvised at home. The shell of the new laid egg has a soft "bloom" which Is a valuable sign of perfect freshness. This bloom is destroyed by touch, and In any case disappears after a few days' exposure to the air. After that the appearance of the shell Is not a reliable Indication of the condition of the contents. By holding an egg between the eye and a strong light In such a manner that the rays of light come to the eye through the egg the condition of the contents can be seen. This method of examining the eggs Is called "candling." "can-dling." Work in Dark Room. Candling eggs Is done In a dark room, using a light inclosed In a case having opposite the light a hole of appropriate ap-propriate sl.e and shape at which the egg Is held for examination. An ordinary ordi-nary hand lamp, a lantern, an incandescent incan-descent bulb, er a flashlight may be used. Any box large enough to hold the lamp, set on end, can be used for a case. Besides the hole in the side opposite the light there should be u hole in the top end (see illustration): otherwi-.. the heat over the light would tire the box. A tester chimney such as is used on a lamp for testing eggs in incubation may be used for candling. can-dling. Have the light on a table or shelf U may be convenient. Place the eggs to be candled at one side; at the other have separate receptacles for good and bad eggs. Take the eggs one by one and hold, large end up, close to the light. Appearance of Eggs in Candling. A perfectly good, fresh egg shows "full" and "clear" before the light ; there is almost no nlr cell at the large end, and the yolk outline Is only faintly faint-ly discernible. A fixed air cell of Vs to Hit! Inch In depth Indicates a fresh egg as eggs run In general receipts. A larger air cell with a mobile lower line Indicates, according to size and fluctuation, a stale egg, or one becoming weak und watery. Spots Are Blood Clots. Very small spots in an egg are usually usu-ally blood clots. Large spots, rings, and shadows are due to heat and germination, ger-mination, and Indicate decomposition in the first stages. An egg that is opaque except for a large fixed air cell contains a chick dead at an advanced ad-vanced stage of Incubation. Au opaque egg with large air cell having a mobile mo-bile lower line Is In an advanced stage of Huh! decomposition. Eggs showing slight spois or rings can ofleu be utilized util-ized by breaking them and separating the bad part. Kggs that are not offensively of-fensively bad muy be used for poultry feed. |