. Principles and practice of poultry culture . Poultry. INCUBATION 257 light conditions continue in the i?itervals betzveen the regular hours for attending the incubator. This will depend mostly upon the faithfulness and skill with which instructions have been fol- lowed, and upon the judgment used in modifying them to suit local conditions, but occasionally also upon weather changes. Thus, after filling lamps and trimming wicks, many operators return in the course of fifteen or twenty minutes to see that lamps are burning well. They also take a look at the incubators, noting the temper- ature
. Principles and practice of poultry culture . Poultry. INCUBATION 257 light conditions continue in the i?itervals betzveen the regular hours for attending the incubator. This will depend mostly upon the faithfulness and skill with which instructions have been fol- lowed, and upon the judgment used in modifying them to suit local conditions, but occasionally also upon weather changes. Thus, after filling lamps and trimming wicks, many operators return in the course of fifteen or twenty minutes to see that lamps are burning well. They also take a look at the incubators, noting the temper- ature and the condition of the flame whenever they happen to be. Fig. 287. Interior of incubator cellar at Pittsfield Poultry Farm, Pittsfield, Maine, showing one side of a mammoth (Hall) incubator of six-thousand-egg capacity (Photograph from Pittsfield Farm) near them. In extreme cold weather or in high winds they watch the incubators very closely, for it is under such conditions that the ordinarily automatic regulator is most likely to become erratic. Selection of eggs for artificial incubation. Considering only the matter of incubation, selection of eggs need not be as rigid for artificial as for natural incubation. When the eggs are to be turned in the trays they must be of uniform size or many may be broken in turning. When eggs are turned by hand, by shuffling on the tray, uniform size is not so essential, although as a rule it is not desirable to use those varying much from the average size of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Robinson, John H. (John Henry), 1863-1935. Boston ; New York : Ginn and Company
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Keywords: ., bookauthorrobinson, bookcentury1900, bookdecade1910, bookyear1912
