Electric Chick Brooding Studies

Author : W. T. Ackerman
Publisher :
ISBN 13 : 9781332242733
Total Pages : 36 pages
Book Rating : 4.2/5 (427 download)

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Download or read book Electric Brooding of Chicks written by W. T. Ackerman and published by . This book was released on 2015-08-05 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Electric Brooding of Chicks: II. Heat Requirements Preliminary experiments in electric brooding were reported in Station Circular 46. Certain temporary conclusions, then drawn, were briefly as follows: (1) electric brooding is practical and can be carried on under very severe climatic conditions without auxiliary heat or excessive mortality; (2) no significant differences in results were observed in insulated versus non-insulated houses; and (3) little is to be gained by house ventilation for the purpose of lowering the humidity. It was suggested that floor conditions be investigated on the premise that they might be responsible for a constant and pronounced variation in temperature throughout the 24-hour period, for degree of chick movement, and for the formation of a moist ring about the brooder. 1934-35 Experiments Accordingly, the insulating material on walls and ceiling of the houses used in the previous year's trials was removed. This material was then applied to the floors of the four houses so that varying degrees of floor insulation values were established. Thus, House 13 was provided with a double wood floor, paper between floors; House 14, with double wood floor plus one layer 7/16" insulating board enclosed in a sealed tar-paper envelope laid between the floors; House 15, with similar construction except for two layers of insulation; and House 16, with three layers of insulation board. (Fig. 5.) Around the base of each house earth or boarding was placed so as to give wind protection to the floors as uniformly as possible. Equipment Temperature readings were obtained by installing thermocouples (1) on the under-surface of the sub-flooring and exposed to the air under the house. (2) between each layer of insulation or flooring, and (3) on the finished surface of each floor. House 13, having no insulation between floors, and House 16, having the maximum amount, were provided with observation booths attached to the west side. A window 2' x 4' was placed in the wall so that chick movement could be observed without disturbance. The two remaining houses were fitted with observation windows only. The leads from the thermocouples were carried to a connecting panel in each booth or adjacent to the observation window so that readings could readily be made with the potentiometer. Recording and check thermometers were employed as in the previous experiments. Three standard makes of brooders were used. (See Fig. 1.) Brooder No. 1 was of circular design with a manufacturer's rating of 350 chicks. On the flat ceiling section a 440-watt, open-coil heating unit was mounted concentric with the center of the brooder. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.