Kinetics of intravenously administered lactose in cows.
Acta Vet Scand 1985;
26:493-500. [PMID:
3836569 PMCID:
PMC8202674]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/1985] [Indexed: 01/07/2023] Open
Abstract
Four adult Norwegian Red cows were employed in an experiment designed to study the kinetics of lactose. The cows were given 50 g or 60 g of lactose by rapid intravenous injection of a 10 % lactose solution. Blood samples were taken at different intervals after injection, and lactose concentrations in the samples determined by an enzymatic/spectrophotometric method.
The mean half-time for lactose elimination was 85.7 min, and for distribution 8.4 min. The mean apparent volume of distribution was calculated to be 0.189 1/kg, and total body clearance 1.55 ml min−1 kg−1.
There was evidence to suggest that lactose mainly is eliminated renally from its distribution volume by glomerular filtration in the cow.
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