Dynamics of quality indexes of laying hens keeping process due to fluctuations of temperature disturbances in an industrial poultry house

Abstract

Dynamics of quality indexes of laying hens keeping process due to fl uctuations of temperature disturbances in an industrial poultry house. The aim of the present paper is to analyze dependences of quality indexes of laying hens keeping process in industrial poultry house such as laying, increase of body weight of hens, weight of eggs, mortality and fodder consumption on environmental temperature. The work uses data registered at the experimental production control system in a poultry house for laying hens keeping which was developed by the specialists of the Department of Automation and Robotic System of National University of Life and Environmental Sciences of Ukraine. On the basis of the results it was concluded that the quality indexes such as laying, increase of hens body weight and fodder consumption changed only under the assumption of continuous presence of daily average air temperature fl uctuations outside house. Dynamical characteristic for laying can be presented as an aperiodic link with time delay. Its transfer coeffi cient depends on the value of daily air temperature fl uctuations around the comfort 20°C. The time response is approximately 4–5 days and the time delay – 7–8 days. Taking into account the tendency of temperature increase in the territory of Ukraine it can be assumed that conditioning equipment should be used inside the poultry house.