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Seasonal variation in the viscosity index and adhesive strength of casein from the milk of individual cows

Published online by Cambridge University Press:  01 June 2009

C. R. Southward  and
R. M. Dolby
C. R. Southward
Affiliation:
New Zealand Dairy Research Institute, Palmerston North, New Zealand
R. M. Dolby
Affiliation:
New Zealand Dairy Research Institute, Palmerston North, New Zealand
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Summary

The viscosity index and adhesive strength of casein from the milk of 6 individual cows were determined on samples collected regularly throughout the 9-month dairying season. The viscosity index of the casein from each cow showed a seasonal decline while the adhesive strength showed a general increase during this time. Casein from one cow had a consistently low viscosity index attributed to the presence in it of a rare genetic variant of α-casein. It is suggested that the variations in viscosity index and adhesive strength are lactational rather than seasonal.

Type
Original Articles
Information
Journal of Dairy Research , Volume 35 , Issue 1 , February 1968 , pp. 25 - 30
Copyright
Copyright © Proprietors of Journal of Dairy Research 1968

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References

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