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Effects of goats' or cows' milks on nutritive utilization of calcium and phosphorus in rats with intestinal resection

Published online by Cambridge University Press:  07 June 2007

Margarita S. Campos*
Affiliation:
Department of Physiology, Institute of Nutrition and Food Technology, University of Granada, E-18071 Granada, Spain
Inmaculada López-Aliaga
Affiliation:
Department of Physiology, Institute of Nutrition and Food Technology, University of Granada, E-18071 Granada, Spain
María J. M. Alférez
Affiliation:
Department of Physiology, Institute of Nutrition and Food Technology, University of Granada, E-18071 Granada, Spain
Teresa Nestares
Affiliation:
Department of Physiology, Institute of Nutrition and Food Technology, University of Granada, E-18071 Granada, Spain
Mercedes Barrionuevo
Affiliation:
Department of Physiology, Institute of Nutrition and Food Technology, University of Granada, E-18071 Granada, Spain
*
*Corresponding author: Professor Margarita S. Campos, fax +34 58 248959 and +34 58 248326, email marga@goliat.ugr.es
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Abstract

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We analysed the effects of goats' milk (GM) on the nutritive utilization of Ca and P in rats with resection of 50% distal small intestine in comparison with cows' milk (CM) and a standard non-milk diet. The three test diets contained 200 g protein and 100 g fat/kg. The apparent digestibility coefficient (ADC) of Ca and P were considerably higher in the two groups of rats given the GM diet than those given the other two diets. Ca and P retention did not decrease by effect of intestinal resection with GM diet. In both groups of animals, serum Ca and P levels and ionic Ca were higher in the case of the GM diet than the other two diets, whereas the parathyroid hormone levels were lower. Ca content in femur, sternum and longissimus dorsi muscle was higher in rats given the GM diet. P content in femur and sternum was higher among the two groups of rats given a milk-based diet (GM or CM), especially with GM diet. The GM diet has beneficial effects on nutritive utilization of Ca and P in control rats and those with resection of the distal small intestine.

Type
Research Article
Copyright
Copyright © The Nutrition Society 2003

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