The differentiated milk recording when milking into the milk line

The article is devoted to theoretical and experimental substantiation of technical capability of the differentiated recording of milk when milking into the milk line. The pilot studies were carried out in 2017 … 2018 in the cowshed for 200 heads of one of the enterprises of the Kirov region. Milking duration depending on intensity of milk secretion was divided into three stages: initial, main and final. The theoretical analysis of the process of milk secretion from an udder nipple of a cow was made. Analytical expressions for definition of the current flow rate of milk were received during milking. The vacuum mode in under-mamillary chambers of the duple milking machine and integrated schedules of milk yield were studied and analyzed during the whole process of milking into the milk line. The weak interrelation between the current milk yield and corresponding vacuum in the under-mamillary chamber of a teat cup was revealed during milking (R² = 0.06…0.15). Very close interrelation (R² = 0.95) between milk yield and duration of milk secretion confirmed a possibility of differentiated recording of milk yield by measurement of the real time of milk outflow during each working cycle. Mathematical models of an algorithm of functioning of devices of the differentiated recording of milk have been developed during milking. Differentiated milk recording during milking can be technically carried out by addition into the device of udder on-quarters milking monitoring of milk secretion intensity the blocks of measurement of time of the real milk flow during each working cycle, calculation and indication of milk yield. Use of milking machines with function of differentiated recording of the milk yield will allow to increase the duration of productive use of animals, quantity and quality of the milk yield.

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