Establishing rational structural-technological parameters of the milking machine collector

Golub, Gennadii; Medvedskyi, Oleksandr; Achkevych, Vasyl; Achkevych, Oksana

doi:10.15587/1729-4061.2018.121537

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…Відомо, що в технології виробництва молока надзвичайно складним і відповідальним є процес доїння. Відзначимо, що якість процесу доїння залежить від трьох інтегрованих факторів: людина-машина-тварина (Gomez et al, 2017;Hoffmann et al, 2017;Golub et al, 2018). За невідповідності фізіологічним потребам тварини навіть одного із цих елементів якість доїння погіршується, що впливає на зниження продуктивності корів і рівень захворювання маститом (Edmondson, 2001;Blowey & Edmondson, 2010;Penry, 2018).…”

Section: обговоренняunclassified

“…Згідно з критеріями придатності корів до доїння виявлено, що в господарстві, яке укомплектоване імпортним поголів'ям (нетелі голштинської породи), придатність до машинного доїння значно вища, ніж на фермі господарства з поголів'ям української чорно-рябої породи. Подібний рівень відмінності за показниками придатності корів до машинного доїння відмічено іншими дослідниками (Hansen, 2015;Brzozowski et al, 2015;Gašparík et al, 2018;Perekrestova, 2018).…”

Section: обговоренняunclassified

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Evaluation of the suitability of high-yielding cows for machine milking under the conditions of innovative technologies

Galai¹,

Lutsenko²

2019

TAVM

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In despite of crisis situation in dairy husbandry, modern dairy farms with innovative milk production technologies and the use of high-performance milking plants of the "Parallel" and "Carousel" type are being created in Ukraine, which requires standardization of the livestock capita both on the exteriors and on indicators of suitability of cows for machine milking. The need for such research is also due to the fact that modern dairy farms are completed with a high productivity livestock cows with a milk yield of 8-10 thousand kg per lactation, which according to these criteria differ significantly from cows with average productivity. The livestock cows of modern dairy farms in Ukraine is completed at the expense of its own livestock capita of farmings and through the purchase of imported non-calving young cows. Therefore, the main problem when creating such farms is to complete their qualitative livestock capita from the point of view of its suitability for machine milking, which in the structure of the cost of construction of new farms is about 30%. It is established that the level of suitability of cows for machine milking on the created farms is different. Thus, at the Superadded liability company farming "Terezine" where the dairy farm is completed with Holstein cattle imported from European countries, the suitability of cows for machine milking is 95.7%. The farming "Ostriykivske" is completed with domestic livestock of black-and-white breed with the suitability of cows for machine milking 82.5%, which negatively affects the physiological state of cows, in particular, the morbidity of their mammitis. The level of morbidity of animals here is practically twice twice above than on the dairy farm completed with an imported livestock capita (25.3%). The analysis of the main criteria concerning the suitability of cows to machine milking showed that a significant part of cows did not meet the requirements of the "Rules of Machine Milking" (2004) on the basis of udder distance from the floor, the size of the teats and the uniformity of the development of the udder slices. If at the Superadded liability company farming "Terezine", where the dairy farm is сompleted with imported livestock capita, the suitability of cows under the form of udder, its distance from the floor, the size of lobules, the uniform development of the lobules of the udder, the duration of milking are within 94.5-98.7%, then on the farm with the domestic livestock capita it is equal to 80.3-82.5%. It has been revealed that in recent years, in Ukraine there is practically no qualitative selection and pedigree work. According to the economic reporting, the main reasons for roguing cows from the herd are barrenness, the disease of the mammary gland and extremities.The roguing of cows on the basis of their suitability for machine milking at farms practically is not carried out.

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Section: обговоренняunclassified

Evaluation of the suitability of high-yielding cows for machine milking under the conditions of innovative technologies

Galai¹,

Lutsenko²

2019

TAVM

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Estimation of mechanical and technological specifications of milk transporting system of milking machine

Medvedskyi

Kukharets

Čėsna

et al. 2020

19th International Scientific Conference Engineering for Rural Development Proceedings

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Simulation of Design Parameters of a Milking Cup with An Extended Service Life

Čėsna

Medvedskyi

Postol

et al. 2022

Agricultural Engineering

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Modern milking machines need some additional studies to meet the requirements as to milking equipment. An imperfect design of a teatcup results in an incomplete milking of cows. The availability of devices for milk flow stimulation promotes an increase in a cow milk yielding capacity. But here arises a problem of an un-controlled axial motion of a teatcup on a teat. As a result, a full milkflow is reduced, particularly at the final stages of milking. There is an effect of an increase in an inner diameter of a liner barrel, which causes that teatcups fall down. A scientific problem of the mitigation of some negative developments with the view to improve the efficiency of a teatcup arises. In a teatcup shell a liner is in a detended position during milking and resting periods. Thus, it under constant stretching. It results in a loss of elasticity irrespective of the material, as well as in reduction ofthe period of service maintenance. The use of a device for supporting a liner which is in a stretched state only during the milkflow, will result in an increase of a teatcup efficiency. The suggested automatic pneumatic mechanism releases a liner from the load during the resting period. The dependence of a tension force of a liner from the surface area of an annular membrane has been established. It has been proven that the membrane surface of 0.00065 m2 provides tension for a mechanism performance irrespective of operating vacuum pressure. The regression equation which connects geometrical parameters of an operating system with the efforts directed at the opening of a leading membrane has been received. A suitability of operation of using a pneumatic tightening device has been substantiated. An insignificant axial motion of a liner during a cycle of milking creates a stimulating effect. As a result, a completeness of miliking increases by 3-8%.

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Establishing rational structural-technological parameters of the milking machine collector

Cited by 4 publications

References 7 publications

Evaluation of the suitability of high-yielding cows for machine milking under the conditions of innovative technologies

Evaluation of the suitability of high-yielding cows for machine milking under the conditions of innovative technologies

Estimation of mechanical and technological specifications of milk transporting system of milking machine

Simulation of Design Parameters of a Milking Cup with An Extended Service Life

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