A note on plasma cholecystokinin concentration in dairy cows
- 1 August 1991
- journal article
- research article
- Published by Cambridge University Press (CUP) in Animal Science
- Vol. 53 (1) , 123-125
- https://doi.org/10.1017/s0003356100006061
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
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