There are three consumer grades for eggs: U.S. Grade AA, A, and B. The grade is determined by the interior quality of the egg and the appearance and condition of the egg shell. Eggs of any quality grade may differ in weight (size).
U.S. Grade AA eggs have whites that are thick and firm; yolks that are high, round, and practically free from defects; and clean, unbroken shells. Grade AA and Grade A eggs are best for frying and poaching where appearance is important.
U.S. Grade A eggs have characteristics of Grade AA eggs except that the whites are “reasonably” firm. This is the quality most often sold in stores.
U.S. Grade B eggs have whites that may be thinner and yolks that may be wider and flatter than eggs of higher grades. The shells must be unbroken, but may show slight stains. This quality is seldom found in retail stores because they are usually used to make liquid, frozen, and dried egg products.
Sizing of Eggs
Size tells you the minimum required net weight per dozen eggs. It does not refer to the dimensions of an egg or how big it looks. While some eggs in the carton may look slightly larger or smaller than the rest, it is the total weight of the dozen eggs that puts them in one of the following classes:
Jumbo 30 ounces
Extra Large 27 ounces
Large 24 ounces
Medium 21 ounces
Small 18 ounces
Peewee 15 ounces
Source: United States Dept. of Agriculture, USDA
Food Safety and Inspection Service
A Brooder Doesn’t Need To Be Fancy – Just Functional
My brooder is nothing more than a cardboard box, 10ft long 3ft. wide, and 16′ high. If your box isn’t high enough you can easily attach additional cardboard to the sides using zip ties.
Duct tape and zip ties are my friend, be creative, you’ll be amazed what you can build with what was once considered junk in the garage or shed.
I found some leftover ceramic floor tiles in the garage and used them to line the bottom of the brooder. Newspaper on top of any flooring will help make cleanup easier. Pine shaving are expensive so as an alternative I use shredded paper saved from my home shredder. However, for the first week I use only paper towels on the bottom so food sources are not confusing to the chicks.
I use a few bricks to build a platform in the center of the brooder where their feeder sets, and the same for the drinker in one corner of the brooder. Day old chicks will have no problem accessing their food and water sources if both are raised, this limits feed waste and helps keep the water clean.
Chicken wire simply laid over the top of the brooder will be sufficient in confining them. They have little interest in escaping, but can spook easily when disturbed by basic brooder chores, so better safe than sorry.
The heat lamp is best situated at one end of the brooder, it’s important to have sufficient space for your chicks to find their comfort zone. It’s a good idea to have a thermometer at both ends of the brooder, but if you watch your chicks behavior it’s quite obvious when they are cold or hot.
When they’re cold they will all huddle together under the heat lamp, when hot they’ll lie down holding their wings away from their body. Somewhere in between is where you want to keep your babies, just watch them, they’ll be quick to inform you of a problem.