Hostname: page-component-77c89778f8-rkxrd Total loading time: 0 Render date: 2024-07-20T08:27:12.934Z Has data issue: false hasContentIssue false
  • English
  • Français

521. Normal variations in the rate of machine milking

Published online by Cambridge University Press:  01 June 2009

F. H. Dodd
F. H. Dodd
Affiliation:
National Institute for Research in Dairying, University of Reading
Get access Rights & Permissions [Opens in a new window]

Extract

1. A study has been presented of the machine milking rate of 141 cows recorded in 326 lactations.

2. The coefficients of variation between cows of various measures of machine milking rate are usually in the range 30–40%, whilst the within-cow variations are of the order of 8–11%.

3. The differences between the milking rates of cows in a single herd are given, together with the distribution of these differences.

4. Milking rate declines as lactation advances, the decline being greater for fast milking cows.

5. Lactation decline in milking rate is related independently to change in milk yield and to interval since calving.

Type
Original Articles
Information
Journal of Dairy Research , Volume 20 , Issue 3 , October 1953 , pp. 301 - 318
Copyright
Copyright © Proprietors of Journal of Dairy Research 1953

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

(1)Matthews, C. A., Shaw, J. M. & Weaver, E. (1928). Bull. Ia St. Coll. Agric. no. 248.Google Scholar
(2)Foot, A. S. (1935). J. Dairy Res. 6, 313.CrossRefGoogle Scholar
(3)Dodd, F. H. & Foot, A. S. (1947). J. Dairy Res. 15, 1.CrossRefGoogle Scholar
(4)Whittleston, W. G. (1946). N.Z. J. Sci. Tech. A, 28, 188.Google Scholar
(5)Beck, G. H., Fryer, H. C. & Roark, D. B. (1951). J. Dairy Sci. 34, 58.CrossRefGoogle Scholar
(6)Matthews, C. A., Swett, W. W. & Graves, R. R. (1941). Tech. Bull. U.S. Dep. Agric. no. 827.Google Scholar
(7)Beck, G. H.Fryer, H. C. & Atkeson, F. W. (1951). J. Dairy Sci. 34, 598.CrossRefGoogle Scholar
(8)Bailey, G. L. (1952). J. Dairy Res. 19, 89.CrossRefGoogle Scholar
(9)Whittleston, W. G. (1945). N.Z. J. Sci. Tech. A, 26, 252.Google Scholar
(10)Baxter, E. S., Clarke, P. M., Dodd, F. H. & Foot, A. S. (1950). J. Dairy Res. 17, 117.CrossRefGoogle Scholar
(11)Smith, V. R. & Petersen, W. E. (1948). J. Dairy Sci. 31, 589.CrossRefGoogle Scholar
(12)Dodd, F. H. & Foot, A. S. (1953). J. Dairy Res. 20, 138.CrossRefGoogle Scholar