Hostname: page-component-7479d7b7d-fwgfc Total loading time: 0 Render date: 2024-07-10T21:16:46.186Z Has data issue: false hasContentIssue false
  • English
  • Français

Teat length and penetration into teatcup during milking in Norwegian Red Cattle

Published online by Cambridge University Press:  01 June 2009

Odd Rønningen  and
Arne Dagfinn Reitan
Odd Rønningen
Affiliation:
Norwegian Institute of Agricultural Engineering, N-1432 Ås-NLH, Norway
Arne Dagfinn Reitan
Affiliation:
Nordmøre and Romsdal Dairy, N-6400 Molde, Norway
Get access Rights & Permissions [Opens in a new window]

Summary

Teat penetration into transparent silicone rubber teatcup liners was recorded during milking of 90 cows on 15 farms. The cows were of Norwegian Red Cattle breed with mean teat length close to the average for the breed. The mean teat length was 54 and 48 mm for fore and rear teats respectively, and mean penetration at the end of milking was 104 and 94 mm. No significant correlation between initial teat length and teat elongation (difference between penetration and initial length) was found. This indicated that the teatcup liner was more stable on long teats than on short. The distribution of teat penetration at the end of milking showed that a large proportion of fore teats penetrated too far into the liner at the end of milking. The optimal liner length for Norwegian Red Cattle was ~ 150 mm.

Type
Original Articles
Information
Journal of Dairy Research , Volume 57 , Issue 2 , May 1990 , pp. 165 - 170
Copyright
Copyright © Proprietors of Journal of Dairy Research 1990

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Bakken, G. 1981 Relationships between udder and teat morphology, mastitis and milk production in Norwegian Red Cattle. Acta Agriculturae Scandinavica 31 438–444Google Scholar
Caruolo, E. V. 1983 Measuring force of massage produced by the teatcup linear. Journal of Dairy Science 66 2441–2445CrossRefGoogle Scholar
Gravir, K. 1980 [Extended progeny testing 1980]. NRF-nytt No. 3/80 pp. 22–31. Hamar, Norway: NRFGoogle Scholar
Mein, G. A., Brown, M. R. & Williams, D. M. 1983 Pulsation failure as a consequence of milking with short teatcup liners. Journal of Dairy Research 50 249–258Google Scholar
Mein, G. A., Brown, M. R. & Williams, D. M. 1986 Effects on mastitis of overmilking in conjunction with pulsation failure. Journal of Dairy Research 53 17–22Google Scholar
Mein, G. A., Clough, P. A., Westgarth, D. R. & Thiel, C. C. 1970 A comparison of milking characteristics of transparent and conventional teatcup liners. Journal of Dairy Research 37 535–548Google Scholar
Mein, G. A., Thiel, C. C. & Akam, D. N. 1973 Mechanics of the teat and teatcup liner during milking: information from radiographs. Journal of Dairy Research 40 179–189CrossRefGoogle Scholar
Williams, D. M. & Mein, G. A. 1982 Physical and physiological factors affecting milk flow rate from the bovine teat during machine milking. Proceedings of the Conference on Dairy Production from Pasture, pp. 42–74 (Eds Macmillan, K. L. and Taufa, V. K.). Hamilton, New Zealand: New Zealand and Australian Societies of Animal Production (New Zealand Society of Animal Production Occasional Publication No. 8)Google Scholar