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

Abstract

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.

Consumption of caprine milk improves metabolism of calcium and phosphorus in rats with nutritional ferropenic anaemia

“…Furthermore, the lesser Ca-Fe interaction might partly explain the particular nutritional characteristics of G diet with respect to C diet (Alfe´rez et al, 2006;Barrionuevo et al, 2002;Campos et al, 2003).…”

Composition of goat and cow milk produced under similar conditions and analyzed by identical methodology

“…Similarly, the fat of goat milk is more digestible (Alfé rez et al, 2001;Haenlein, 2001), and it may be considered an excellent source of energy for use in various metabolic processes (Boza and Sanz Sampelayo, 1997;Sanz Ceballos, 2007) and even for combating metabolic diseases (Babayan, 1981;García Unciti, 1996;Velá zquez et al, 1996). With respect to its mineral composition, in general the levels measured of the principal elements, and the nutritional use made of them, show it to be of higher quality than cow milk (Moreno, 1995;Boza and Sanz Sampelayo, 1997;Haenlein, 2001;Campos et al, 2003).…”

Impact of goat milk powdered formulations on mineral absorption, peak bone mass and bone loss due to ovariectomy in rats

“…Similarly, Campos et al 10 showed that goat milk improves mineral retention in rats with intestinal resection. In that study, goat milk was compared with a non-milk diet as well as cow milk.…”

“…4,5 Several animal-based studies have also indicated enhanced protein, mineral and fat utilisation from goat milk compared with cow milk. 6 -10 Studies also demonstrate a higher calcium content of the femur, sternum and Longissimus dorsi muscle 7,10 and higher bone mineral density 6 following consumption of goat milk compared with cow milk. The constituents or synergistic relationships in goat milk contributing to these benefits are not known.…”