. Commercial poultry raising;. Poultry. 136 COMMERCIAL POULTRY RAISING made to span ten feet without need for an intervening support. Spans greater than this should be supported in the middle by a third cleat, a piece of I- by 3-inch stuff stood on edge, otherwise the perches will sway heavily and disturb the sense of security in the fowls. The end walls in houses sixteen feet long and less may be made to support the perches, dropping-boards and nests. In buildings of the continuous laying-house type it is customary to erect. {Courtesy Purdue Experiment Station) Fig. 95.—Floors of poultry buil
. Commercial poultry raising;. Poultry. 136 COMMERCIAL POULTRY RAISING made to span ten feet without need for an intervening support. Spans greater than this should be supported in the middle by a third cleat, a piece of I- by 3-inch stuff stood on edge, otherwise the perches will sway heavily and disturb the sense of security in the fowls. The end walls in houses sixteen feet long and less may be made to support the perches, dropping-boards and nests. In buildings of the continuous laying-house type it is customary to erect. {Courtesy Purdue Experiment Station) Fig. 95.—Floors of poultry buildings should be unobstructed. Note how this battery of trap nests is arranged, together with the perches and dropping- boards. transverse partitions, at intervals of twelve or sixteen feet, ex- tending five or six feet from the rear wall, which are designed to prevent currents of air from forming dangerous drafts in the roosting compartments, and which serve the additional purpose of a foundation for the perches and so forth. Construction of Boards.—The dropping-boards should be made fairly heavy and rigid, for it must be remembered that they will be made to carry considerable weight, not alone the weight. 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 Roberts, Howard Armstrong, 1885- [from old catalog]. Philadelphia, D. McKay
Size: 1950px × 1282px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectpoultry, bookyear1920
