EXPERIMENTAL STUDY OF THE DEVICE TO MASSAGE THE UDDER OF HEIFERS OF SINGLE-CHAMBER TYPE

Abstract

The aim of the research is the study of actual trends in improvement of the device for pneumomassage of the udder of heifers (UPVN) single-chamber type by implementing multi-factor experiment with a matrix of almost D - optimal plan of type Bn for the four studied factors. Analysis of the data shows that the design UPUN has a fundamental disadvantage associated with the presence of drainage holes in the bell. This hole does not allow to provide the necessary range of variation of air pressure in a massage in the bell strokes of massage and relief. As one of the conclusions of the performed work can be taken the assertion that physiologically reasonable vacuum effect on the mammary gland of heifers can be realized only with the help of massage device dual-chamber type.