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Glucose challenge in early lactating dairy cows selected for high or low milk-fat concentration

Published online by Cambridge University Press:  18 August 2016

M. Åkerlind ,
M. Emanuelson ,
K. Dahlborn  and
K. Holtenius
M. Åkerlind
Affiliation:
Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, Kungsängen Research Centre, 753 23 Uppsala, Sweden
M. Emanuelson
Affiliation:
Swedish Dairy Association, 631 84 Eskilstuna, Sweden
K. Dahlborn
Affiliation:
Department of Animal Physiology, Swedish University of Agricultural Sciences, Box 7045, 750 07 Uppsala, Sweden
K. Holtenius
Affiliation:
Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, Kungsängen Research Centre, 753 23 Uppsala, Sweden Department of Clinical Nutrition, Swedish University of Agricultural Sciences, Box 7036, 750 07 Uppsala, Sweden
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Abstract

Responses to intravenous glucose challenge (no. = 26) and basal metabolite and hormone concentrations (no. = 68) were determined in dairy cows selected for high (HFI) or low (LFI) milk-fat concentration but with similar 40 g/kg fat-corrected milk (FCM) yields. All cows were given a mixed diet ad libitum. Following a glucose challenge the insulin release was higher (P < 0·05) and the glucose clearance rate faster (P < 0·05) in the HFI cows compared with the LFI cows. Basal plasma concentrations of the metabolites alanine, β -hydroxybutyrate, glucose, non-esterified fatty acids and urea and the hormones insulin-like growth factor-1 (IGF-1), insulin and leptin were not influenced by selection line.

Keywords

dairy cowsglucosemilk fat percentagesomatomedin
Type
Research Article
Information
Animal Science , Volume 68 , Issue 4 , June 1999 , pp. 717 - 722
Copyright
Copyright © British Society of Animal Science 1999

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