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Residual milk yield as affected by dose and time of injection of oxytocin*

Published online by Cambridge University Press:  01 June 2009

P. D. Thompson ,
M. J. Paape  and
J. W. Smith
P. D. Thompson
Affiliation:
Animal Physiology and Genetics Institute, Agricultural Research Center, ARS, USDA, Beltsville, Md. 20705
M. J. Paape
Affiliation:
Animal Physiology and Genetics Institute, Agricultural Research Center, ARS, USDA, Beltsville, Md. 20705
J. W. Smith
Affiliation:
Animal Physiology and Genetics Institute, Agricultural Research Center, ARS, USDA, Beltsville, Md. 20705
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Summary

A study was made, using Holstein cows, of the relationship between (1) the dose of oxytocin administered; (2) the time between milking and intravenous (i.v.) injection and (3) the time between injection and withdrawal of residual milk. Effectiveness of each dose for removal of residual milk was expressed as the percentage of residual milk in the quarter which was withdrawn by a test milking. The total amount of milk in the quarter was determined by giving a large dose of oxytocin and a second test milking, which then indicated the volume of milk missed by each combination of dose and delay times. It was found that delay before injection had no consistent influence on the effectiveness of the test dose; however, an increased delay after injection required an increase in the test dose for removal of a constant percentage of residual milk. The mean dose required for 75% removal increased from 6·3 mu/kg bodyweight to 57 mu/kg bodyweight as the time from injection to removal of residual milk increased from 5 to 30 min. The doses which produced removal of 75% of the residual milk in at least 50% of the quarters tested were 5, 10 and 40 i.u. for delays between injection and removal of residual milk of 5, 15 and 30 min respectively.

Type
Research Article
Information
Journal of Dairy Research , Volume 40 , Issue 2 , June 1973 , pp. 221 - 227
Copyright
Copyright © Proprietors of Journal of Dairy Research 1973

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References

REFERENCES

Anderson, R. R., Hindery, G. A., Parkash, V. & Turner, C. W. (1968). Journal of Dairy Science 51, 601.CrossRefGoogle Scholar
Chen, T. W., MacDonald, M. A. & Hawes, R. O. (1966). Canadian Journal of Animal Science 46, 33.CrossRefGoogle Scholar
Cleverley, J. D. & Folley, S. J. (1970). Journal of Endocrinology 46, 347.CrossRefGoogle Scholar
Ely, F. & Petersen, W. E. (1941). Journal of Dairy Science 24, 211.Google Scholar
Graf, G. C. (1969). Journal of Dairy Science 52, 1003.Google Scholar
Kitts, W. D., Merriman, M. & Berry, J. C. (1963). Canadian Journal of Animal Science 43, 47.CrossRefGoogle Scholar
Koshi, J. H. & Petersen, W. E. (1955). Journal of Dairy Science 38, 788.Google Scholar
Lawson, D. M. & Graf, G. C. (1968). Journal of Dairy Science 51, 1676.Google Scholar
Manunta, G. & Marongiu, A. (1961). Archivio Veterinario Italiano 12, 37Google Scholar
(cited in Dairy Science Abstracts (1961), 23, 328).Google Scholar
Manunta, G., Marongiu, A. & Nuvole, P. (1961). Archivio Veterinario Italiano 12, 409Google Scholar
(cited in Dairy Science Abstracts (1962), 24, 83).Google Scholar
Momongan, V. G. & Schmidt, G. H. (1970). Journal of Dairy Science 53, 747.Google Scholar
Tindal, J. S. & Yokoyama, A. (1962). Endocrinology 71, 196.CrossRefGoogle Scholar
Velitok, I. G. (1967). Sbornik Nauchnȳkh Rabot Vsesoyuznogo Nauchno-issledovatel'skogo Instituta Zhivotnovodstva, 1967, 99Google Scholar
(cited in Dairy Science Abstracts (1967), 29, 399).Google Scholar
Whittlestone, W. G. (1955). Journal of Dairy Research 22, 290.CrossRefGoogle Scholar