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Influence of milking conditions and vacuum control on hydraulic milking performance

Published online by Cambridge University Press:  01 June 2009

Robert J. Grindal
Robert J. Grindal
Affiliation:
Milking and Mastitis Centre, AFRC Institute for Animal Disease Research, Compton Laboratory, Compton, Netvbury RG16 0NN, UK
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Summary

Changes were made in milking conditions and vacuum levels to assess optimum parameters for hydraulic milking. A randomized block design was used for the trial, each result being the mean of data from four cows. The results confirmed that faster milking occurred at 50 kPa vacuum (pulsation and milkline) and showed that high vacuum levels created within the liner could be prevented by providing a higher vacuum to the pulsation chamber than the milkline (differential vacuum) without substantially reducing milking performance. The stimulation provided by hydraulic milking may be important in achieving rapid milking in the absence of udder preparation. Lipolysis of milk fat was reduced by hydraulic milking as was milk foam in the recorder jar, particularly when no air was admitted to the claw.

Type
Original articles
Information
Journal of Dairy Research , Volume 55 , Issue 1 , February 1988 , pp. 15 - 24
Copyright
Copyright © Proprietors of Journal of Dairy Research 1988

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References

REFERENCES

Ardran, G. M., Kemp, F. H., Clough, P. A. & Dodo, F. H. 1958 Cineradiographic observations on machine milking. Journal of Dairy Research 25 154–158CrossRefGoogle Scholar
Griffin, T. K., Bramley, A. J. & Dodo, F. H. 1980 Milking machine modifications in the control of bovine mastitis. Proceedings of the International Workshop on Machine Milking and Mastitis, Moorepark 19–29 (Ed. O'shea, J.) Moorepark, Fermoy: An Foras TalúntaisGoogle Scholar
Griffin, T. K., Grindal, R. J. & Bramley, A. J. 1988 A multi-valved milking machine cluster to control intramammary infection in dairy cows. Journal of Dairy Research In pressCrossRefGoogle Scholar
Koops, J. & Klomp, H. 1977 Rapid colorimetric determination of free fatty acids (lipolysis) in milk by the copper soap method. Netherlands Milk and Dairy Journal 31 56–74Google Scholar
Mein, G. A., Maguire, P. D. & Sanoiorgi, F. 1974 Cinephotographic studies of the bovine teat and teat-cup liner during milking. 19th International Dairy Congress New Delhi, IE 14–15Google Scholar
Neave, F. K., Oliver, J. & Dodd, F. H. 1958 Milking machine and technique investigations. Report of the National Institute for Research in Dairying, 1957 27–28Google Scholar
Shipe, W. F., Senyk, G. F. & Fountain, K. B. 1980 Modified copper soap solvent extraction method for measuring free fatty acids in milk. Journal of Dairy Science 63 193–198CrossRefGoogle Scholar
Thiel, C. C., Clough, P. A., Westgarth, D. R. & Akam, D. N. 1966 Mechanics of machine milking. II. The flow-rate pattern within single pulsation cycles. Journal of Dairy Research 33 177–191CrossRefGoogle Scholar
Thompson, P. D. & Sieber, R. L. 1980 Milking machine effects on impacts, and teat end lesions. Proceedings of the International Workshop on Machine Milking and Mastitis, Moorepark 61–72 (Ed. O'shea, J.) Moorepark, Fermoy: An Foras TalüntaisGoogle Scholar
Walsh, J. P. & Nyhan, J. F. 1967 Effect of milking machine pulsation rate and vacuum level on milk yield and milk composition. An Foras Talúntais, Animal Production Research Report 54–55Google Scholar