. Artificial incubating and brooding. By holding the eggs before the opening in the egg tester, which has been placed on a lightedlamp, the operator will be able to examine the contents. Theinfertile eggs will be perfectly clear or only show a slight shadowof the yolk. The dead germs are not so easy to recognize, and a littlepractice is necessary to identify them. Many dead genns willshow a small irregular red line apparently adhering to the iniride-of the shell, or a broken circle of red containing a dark brownspot. The operator will soon become familiar with the various-types of dead and put
. Artificial incubating and brooding. By holding the eggs before the opening in the egg tester, which has been placed on a lightedlamp, the operator will be able to examine the contents. Theinfertile eggs will be perfectly clear or only show a slight shadowof the yolk. The dead germs are not so easy to recognize, and a littlepractice is necessary to identify them. Many dead genns willshow a small irregular red line apparently adhering to the iniride-of the shell, or a broken circle of red containing a dark brownspot. The operator will soon become familiar with the various-types of dead and putrid eggs. On the sixth day the live egg is easily recognized as itrcontains a spider like arrangement of blood vessels in the midstof which appears the embryo, a small irregular dark body whichhas pulsating motion and appears to be floating in the centerof the network of blood vessels which radiate from it. On thetenth day the larger portion of the fertile egg appears darkwith a fair sized air space at the large end. Mark any doubt-. 35—HEALTHY BROODER-RAISED LEGHORN CHICKS ful eggs and let them remain in the machine until the next the trajful has been tested and the infertile eggs anddead germs removed, the live eggs should be returned to theincubator. The infertile eggs may be cooked and fed to largebrooder chicks, growing stock or breeding birds. Do not feedeggs to newly hatched chicks. The second test should be made on the seventeenth oreighteenth day. All live germs will now appear to fill thegreater part of the egg, making it opaque when held before thetester. The air cell will be considerably increased in size andmay show a slightly irregular outline. Dead genus will showa streaky or mottled appearance. All dead germs and any eggs,marked doubtful at the first test, which have failed to developshould be removed at this time. HATCHING TIME When chicks begin to pip the eggs (break the shell) it istime to stop turning. The trays should be pushed back as far 39 AR
Size: 1766px × 1414px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectpoultry, bookyear1906
