scholarly journals Studies to determine the value of air consumption and power of the device for automatic removal of the milking machine

2021 ◽  
Vol 659 (1) ◽  
pp. 012031
Author(s):  
V Ulyanov ◽  
V Khripin ◽  
A Kiryanov ◽  
S Vidov ◽  
D Zhizhnov
2020 ◽  
pp. 9-12
Author(s):  
Viktor E. Lyubimov ◽  

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.


2015 ◽  
Vol 135 (8) ◽  
pp. 954-962
Author(s):  
Hirohisa Tsubakida ◽  
Yumie Ono ◽  
Atsushi Ishiyama

Results of the Ayrshire breed cows, Holstein cows and Holstein-Yaroslavl cross breed cows milk productiv-ity analysis in the same environment conditions and depending on the kappa-casein and beta-lactoglobulin genotypes are presented in this article. The animals are kept in the common environmental conditions of the LLC Farming firm “Pakhma», the Ayrshire breeding plant. Feeding of cows here is carried out according to detailed norms, concentrated feed averages 43%. The maintenance system is year-round stalling, milking is carried out in the milk line, the DeLaval milking machine is used, and labor-intensive processes in animal husbandry are mechanized. The farm has a milk processing shop. It was established that all the inspected cows (n=91) had a prevailing AA kappa-casein genotype – 75,8% on average. BB Ayrshire breed and Hol-stein-Yaroslavl cross breed genotypes were not established. AB and BB beta-lactoglobulin genotypes are seen on average with a frequency of 44%. AA beta-lactoglobulin genotype in Holstein cows breed was not found. The indicators of statistically reliable difference in milkability among all groups and genotypes was not estab-lished. A higher consistence of protein in the milk of B-allele kappa-casein type cows is evident in all groups with no difference between breed belonging. The complex variant of CSN3/LGB genotypes showed that ac-cording to ultimate milk fat and protein yield the most productive cows were:АВ/ВВ, АВ/АВ genotype Ayr-shire cows, АВ/АВ Holstein genotype cows, AB/BB genotype Holstein-Yaroslavl cross breed cows. Hence, the most efficient cows are those with B-allele variants.


Author(s):  
I. A. Afanasiev ◽  
V. V. Tkach

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.


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