Summary
In a poultry house, many sorts of harmful gases are generated by chemical responses of the manure accumulated. The generation of harmful gases is the most serious problem in a poultry house. The development of more efficient machine for the manure removal is severely required. In the previous paper (Aono et al.,1994), we made a new machine for the manure removal on an experimental basis, which provides automatic running device and is used in a open and high floor type poultry house, and then examined its traction ability and efficiency of the manure removal.HomePage
In this paper, for further investigation of the machine performance, the physiological stress when the worker receives while operating the new manure removing machine was examined by measuring the working time and the number of hert beat of the operator. The working ability in the new machine is 1.4 fold higher than that in a conventional machine. The monitoring of the number of hert beat allowed to exactly distinguish several working processes, such as rest, work and restoration. The incremental index of the number of hert beat of the operator varied with the degree of the biological stress, and it is lower in the use of new machine than in the use of a conventional machine.Keywords: open type poultry house, operations of removal of manure, physiological load, manure-removing-machine, index ratio of number of heart beat