The Milking Unit Adapted to the Physiological Requirements for Machine Milking of Cows

2021 ◽  
pp. 1011-1020
Author(s):  
Ivan V. Kapustin ◽  
Elena I. Kapustina ◽  
Dmitry I. Gritsay ◽  
Vitaly A. Alekseenko ◽  
Igor I. Shvetsov
Keyword(s):  
Machine Milking

Method of high frequency therapy at cows' mastitis during machine milking

2020 ◽  
pp. 9-12
Author(s):  
Viktor E. Lyubimov ◽  
Keyword(s):  
Dairy Cows ◽  
Electromagnetic Fields ◽  
High Frequency ◽  
High Efficiency ◽  
Environmentally Friendly ◽  
Ultrahigh Frequency ◽  
Machine Milking ◽  
High Frequency Electromagnetic Field ◽  
Milking Machine ◽  
Methods Of Treatment

Health of dairy cows ensures human health, so it is important that dairy products do not contain antibiotics that are used to treat any inflammation, including mastitis. In Russia at present, the problem of mastitis in cows exists with both attached and loose housing of cows. Mastitis of dairy cows are the great problem in milking husbandry. Losses from mastitis in milk yield can reach 15-20%. The main reasons for the occurrence of nonspecific mastitis of cows are the shortcomings of the working components of the milking machine: the degree of deterioration of the nipple rubber and the violation of machine milking technology (the reduction in pre-milking time and vacuum fluctuations account for 70% of all causes). Treatment of mastitis with antibiotics is effective, but not environmentally friendly and unacceptable. For the treatment of inflammation of the udder, it is necessary to use more environmentally friendly methods of treatment, one of which is the exposure to ultra-high frequency electromagnetic field tested by medicine. Use of three types of medical-mobile milking machines with the same method of exposure to ultrahigh-frequency electromagnetic fields on cow's nipples through electrodes in milking cups: LPDA-1-UHF, LPDA-2-UHF and LPDA-UHF-30 M, is described in the article. Author proved that cows with subclinical forms of mastitis recovered faster during milking with exposure to the ultrahigh frequency than when treated by antibiotics, and milking with the ultrahigh frequency device helps to recover 82% of the affected quarters with clinical forms and 100% of cows with subclinical forms of mastitis or with udder irritation. The high efficiency of the method of exposure to electromagnetic fields of the ultrahigh frequency during machine milking by means of medical-mobile milking machines LPDA-UHF for the prevention and treatment of mastitis of cows was shown.

Method and results of experimental researches of modes of work of the adaptive milking equipment on the basis of the portion meter of the weight type

2020 ◽  
pp. 140-146
Author(s):  
I. A. Afanasiev ◽  
V. V. Tkach
Keyword(s):  
Regression Analysis ◽  
Vacuum Pressure ◽  
Limit Values ◽  
Operating Modes ◽  
Machine Milking ◽  
Milk Output ◽  
Mode Of Operation ◽  
Milking Machine ◽  
Experimental Researches

Annotation Purpose. Improving the efficiency of machine milking due to the improvement of milking equipment on the basis of the portion meter of the weight type. Methods. Studies have been conducted on the basis of the planned experiment. The data obtained were processed using the methods of regression analysis. Results. The technique of laboratory researches is developed, a prototype of a membrane regulator of vacuum is made and experimental researches of operating modes of the adaptive milking equipment on the basis of the portion meter of the weight type. According to the results of the research, the dependence between the parameters and the mode of operation of the membrane vacuum regulator was obtained. Conclusions. The dependence is obtained, between the vacuum pressure in the milk collection chamber of the collector, milk expense, the diameters of the milk pipe and the diameters of a throttle opening. The limit values of the intensity of milk output (0.2 m3/s) at which there is a critical drop in the working vacuum pressure in the milk collection chamber of the collector and the corresponding choke parameters (diameter of the throttle opening 0,001 m) are defined. This eliminates this negative phenomenon. Keywords: adaptive milking equipment, milking machine, machine milking, milk expense.

Oxytocin and cortisol release during suckling, hand-milking and machine milking in camels

2021 ◽  
pp. 1-8
Author(s):  
Marwa Brahmi ◽  
Moufida Atigui ◽  
Ihmen Hammadi ◽  
Jacques Portanguen ◽  
Mohamed Hammadi ◽  
...  
Keyword(s):  
Plasma Concentration ◽  
Management Practices ◽  
Maternal Behaviour ◽  
Milk Ejection ◽  
Dromedary Camels ◽  
Machine Milking ◽  
Physiological Consequence ◽  
Peak Release ◽  
Cortisol Release ◽  
Concentration Patterns

Abstract This research paper addresses the hypothesis that oxytocin (OT) could be released during suckling and during milking with and without the presence of a calf and that this release could be regulated by maternal behaviour. Plasma concentration patterns of OT and cortisol (CORT) were measured in six Tunisian dromedary camels during 2 suckling episodes, 2 manual milking episodes with calves beside the mother and 2 machine milking episodes without calves present. Various patterns of OT release were observed between each camel including specific two peak release patterns. Higher plasma OT concentrations were found during the suckling and hand-milking episodes with simultaneous suckling of calves, than during the machine milking episodes without calves. Exclusive mechanical milking episodes also evoked significant mean OT release, although greatly reduced compared to suckling and hand milking. The low basal levels and classical CORT release patterns suggested non-stressful management practices were used and there were very limited differences in udder stimulation between managements. The OT release induced by exclusive suckling and suckling together with hand-milking gives a reference point for what a good milk ejection stimulation is in camels. The important and specific reduction of OT release during machine milking without the calf present could be a physiological consequence of the maternal behaviour (selectivity for the own young) and to a lesser extent explained by a lower stimulation by machine milking.

703. Cineradiographic observations on machine milking

1958 ◽  
Vol 25 (2) ◽  
pp. 154-158 ◽  
Author(s):  
G. M. Ardran ◽  
F. H. Kemp ◽  
P. A. Clough ◽  
F. H. Dodd
Keyword(s):  
Rate Ratio ◽  
Machine Milking ◽  
Pulsation Rate

Machine milking has been studied in three cows by cineradiography at 50 frames/sec. The findings of Pier et al.(5) have been confirmed.The effects of variation in the pulsation rate, ratio and liner tension were investigated and the results compared with those obtained by other methods. The proportion of each milking cycle during which milk flows has been determined.

Responses of the bovine teat to machine milking: measurement of changes in thickness of the teat apex

1988 ◽  
Vol 55 (3) ◽  
pp. 331-338 ◽  
Author(s):  
Jörn Hamann ◽  
Graeme A. Mein
Keyword(s):  
Positive Pressure ◽  
Vacuum Level ◽  
Machine Milking ◽  
Before And After ◽  
The Mean ◽  
High Degree

SummaryChanges in the teat apex before and after different milking treatments were measured with a spring-loaded caliper device known as a cutimeter which could detect changes in thickness of the tissues of the teat end, presumably due to congestion and/or oedema, with a high degree of accuracy (± 2%) and repeatability (r = 0·99). Teat end thickness increased with increasing vacuum level. The mean increase immediately after milking with a conventional cluster was 2% for 24 teats milked at 30 kPa, 8% at 50 kPa and 21% at 70 kPa. At these vacuum levels, the mean increases for the same teats milked with an unconventional (PKME) teatcup were 10, 18 and 25% respectively. Cyclic application of 35 kPa positive pressure to the pulsation chamber of a conventional teatcup operating at 50 kPa reduced teat end thickness by 8% compared with the mean premilking value. Although most teats returned to within ± 2% of their premilking thickness values by 1 h after milking, differences were apparent between different milking systems for up to 4 h postmilking.

scholarly journals The Rate of Machine Milking of Dairy Cows. II. Effect of Vacuum and Pulsation Rate

1958 ◽  
Vol 41 (6) ◽  
pp. 849-856 ◽  
Author(s):  
W.E. Stewart ◽  
L.H. Schultz
Keyword(s):  
Dairy Cows ◽  
Machine Milking ◽  
Pulsation Rate

scholarly journals Influence of low vacuum levels on milking characteristics of sheep, goat and buffalo

2013 ◽  
Vol 44 (2s) ◽  
Author(s):  
Maria Caria ◽  
Carlo Boselli ◽  
Lelia Murgia ◽  
Remo Rosati ◽  
Antonio Pazzona
Keyword(s):  
High Vacuum ◽  
Vacuum Level ◽  
Machine Milking ◽  
The World ◽  
Study Characteristics ◽  
Principal Factors ◽  
Low Levels ◽  
Kinetics Of ◽  
Teat Canal ◽  
Different Parts

Different settings of the operating parameters (pulsator rate, pulsator ratio and vacuum) are used for milking dairy species in different parts of the world. The level of the operating vacuum in machine milking is one of the principal factors which influence the integrity of the tissues and the milk quality. High vacuum levels (>42 kPa) are often used to facilitate the opening of the teat canal by overcoming the biological closing forces whithin the teat sphincter, but can result in severe machine-induced teat tissue damage. In this study characteristics and performances of mechanical milking at low vacuum levels have been investigated in different dairy species. Milking times and milk productions have been obtained from milk emission curves, recorded by electronic milk-meters (LactoCorder®) during the milking at different vacuum levels of sheep, goats and buffaloes. The results of the comparative experiments clearly indicate that a low vacuum level modifies the kinetics of milk emission, the machine-on time and, thus, the throughput of milking system, in all the dairy species considered. Milk yield was satisfactory at any level tested, showing that low vacuums can be adequate to completely empty the udder. Slight differences were found across species concerning the increase in the milking time per head associated with low levels of milking vacuum Our study represents a contribution to encourage the decrease of the working vacuum during mechanical milking, also for those dairy species generally considered hard to be milked, as buffaloes. Milking should be performed applying the lowest vacuum level, compatible with not excessively prolonging milking time, in line with the animal welfare on dairy husbandry.

scholarly journals Effects of Different Milk-Tube Guidance Settings and Teat-Cup Types on the Dynamics of Teat-End Vacuum and Vacuum Fluctuations During Machine Milking

2022 ◽  
pp. 97-106
Author(s):  
Hülya ÖZ ◽  
Philipp THİELE ◽  
Ulrich STRÖBEL ◽  
Adnan DEĞİRMENCİOĞLU ◽  
Susanna DEMBA ◽  
...  
Keyword(s):  
Vacuum Fluctuations ◽  
Machine Milking

scholarly journals ADAPTIVE CYBER-PHYSICAL SYSTEM OF THE MILK PRODUCTION PROCESS

2020 ◽  
Vol 61 (2) ◽  
pp. 199-208
Author(s):  
V.T. Dmytriv ◽  
I.V. Dmytriv ◽  
I.M. Horodetskyy ◽  
P.P. Yatsunskyi
Keyword(s):  
Milk Production ◽  
Physical System ◽  
Technical System ◽  
Cyber Physical System ◽  
General View ◽  
Machine Milking ◽  
Operational Information ◽  
Self Tuning ◽  
Maximum Reliability ◽  
Functional Content

The basic principles of adaptation of machine milking technical system to the physiology of milk ejection of cows are considered. Main adaptation parameters and conditions of the technical system are grounded, under these parameters and conditions the self-tuning of technical system is possible. The structure of modules of adaptive cyber-physical control system of machine milking is developed, its functionalities are revealed, the method of coordination between discreteness of measurement of information and the quantization period is developed to ensure maximum reliability of the information. The memory size of the operational information about the process parameters is justified, as well as their structure and functional content. Functional content and structure of information about the technological process of the database is formulated. The general view of the main elements of the adaptive cyber-physical system of cows milking is given, as well as the results of work of the experimental adaptive cyber-physical system of the milk production.

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