Zobrazeno 1 - 10
of 49
pro vyhledávání: '"J D, Simmons"'
Publikováno v:
Journal of Applied Poultry Research. 13:258-262
SUMMARY Inadequate drinking water supplies have been cited as a major reason for poor weight gain in broiler production. One of the limiting factors is nipple waterer flow rate. Research demonstrated a constant water flow rate of 25 mL/min impeded BW
Autor:
B. D. Lott, D. R. Smith, Moore Pa, D. M. Miles, Stilborn Hl, J. D. Simmons, D. R. Rowe, S. L. Branton, Rice Dw
Publikováno v:
Poultry Science. 82:1544-1549
Three pen trials were conducted to determine the main effect of alum addition to litter on form of poultry litter P using a 2 x 2 factorial structure of the subunit treatments: diets including high available phosphorus/low phytate corn (HAPC) and phy
Publikováno v:
Journal of Applied Poultry Research. 10:427-430
SUMMARY In a nipple waterer study, 55 (6.11%) of 900 total chicks were found dead the day after placement with another 25 to 30 chicks alive but in apparent respiratory distress. Examination of temperature and humidity records revealed no aberrations
Publikováno v:
Poultry Science. 79:1396-1400
Two trials were conducted to determine the effect of air velocity on feed and water consumption at a constant temperature of 27 C and a daily cyclic temperature of 22-32-22 C. Air velocity over the broilers was
Publikováno v:
Applied Engineering in Agriculture. 14:649-653
The poultry industry could benefit from a rapid, efficient method to accurately determine the total volumetric flow rate of large, in-place ventilation fans. A portable anemometer using five, propeller-driven DC generators connected to a 386 PC provi
Publikováno v:
Poultry Science. 76:944-947
Broilers were maintained on litter in environmental chambers to study water consumption from bell and nipple waterers. The chambers were set at high cyclic temperatures of either 24-35-24 C or 24-32-24 C daily cycles in three trials. Water consumptio
Autor:
B. D. Lott, J. D. Simmons
Publikováno v:
Applied Engineering in Agriculture. 13:525-530
Wide variations in temperature and humidity on hot summer days can present problems for conventional fogging systems. Systems with set water flow rates in liters/hour (gallons/hour) often apply too much moisture at one time of day, while not enough a
Autor:
J. D. Simmons, B. D. Lott
Publikováno v:
Applied Engineering in Agriculture. 12:497-500
Three trials were conducted to determine the effect of water temperature on the performance of an evaporative cooling system. A small, self-contained “pad and fan” evaporative cooling system with a 1.3 ¥ 1.3 m (4 ¥ 4 ft) cross-section tunnel an
Autor:
J. D. Simmons, B. D. Lott
Publikováno v:
Journal of Applied Poultry Research. 2:314-323
Every summer in the southeastern U.S., many broilers die from heat stress due to a combination of high temperature and high humidity. Managers tend to ventilate open-sided broiler houses during summer primarily with large fans that use a large amount
Autor:
J D, Simmons, R A, Keller
Publikováno v:
Applied optics. 12(9)