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A note on plasma cholecystokinin concentration in dairy cows

Published online by Cambridge University Press:  02 September 2010

M. Furuse ,
S. I. Yang ,
Y. H. Choi ,
N. Kawamura ,
A. Takahashi  and
J. Okumura
M. Furuse
Affiliation:
Laboratory of Animal Nutrition, School of Agriculture, Nagoya University, Nagoya 464-01, Japan
S. I. Yang
Affiliation:
Laboratory of Animal Nutrition, School of Agriculture, Nagoya University, Nagoya 464-01, Japan
Y. H. Choi
Affiliation:
Laboratory of Animal Nutrition, School of Agriculture, Nagoya University, Nagoya 464-01, Japan
N. Kawamura
Affiliation:
Aichi-ken Agricultural Research Centre, Nagakute, Aichi 480-11, Japan
A. Takahashi
Affiliation:
Aichi-ken Agricultural Research Centre, Nagakute, Aichi 480-11, Japan
J. Okumura
Affiliation:
Laboratory of Animal Nutrition, School of Agriculture, Nagoya University, Nagoya 464-01, Japan
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Abstract

Changes in plasma cholecystokinin (CCK) levels after feeding were investigated in dairy cows. Three HolsteinFriesian lactating cows given concentrates at 06.00 and 13.00 h and hay at 16.30 h were used. Blood samples were taken from the jugular vein from 0 (before feeding, 13.00 h) to 6 h at 1-h intervals. The immunoreactivity of CCK was expressed in terms of the CCK-8 equivalent. The plasma concentration of CCK was not changed over the experimental period. This result might be reflected by the continuous flow of digesta from the rumen.

Keywords

blood compositioncholecystokinindairy cows
Type
Research Article
Information
Animal Production , Volume 53 , Issue 1 , August 1991 , pp. 123 - 125
Copyright
Copyright © British Society of Animal Science 1991

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