The utilization of protein and mineral components of diets containing white lupin or casein supplemented with lupin hulls, manganese and sodium phytate
More details
Hide details
Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima 10,10-718 Olsztyn, Poland
Publication date: 1997-08-19
J. Anim. Feed Sci. 1997;6(3):413–422
A high manganese content in a casein diet, similar to that in a lupin-containing diet (about 0.3 g/kg), had no adverse effects on the utilization of dietary protein and retention of Mn, Mg, Fe and P in rat body. The addition of 10% lupin hulls caused a significant decrease in the digestibility (89.5 vs. 92.8%) and protein efficiency ratio (2.8 vs. 3.03), and lowered the retention of mineral components in comparison with the control diet. Manganese retention declined from 3.84 to 1.22% of intake, phosphorus from 30.9 to 24.9%, magnesium from 24 to 12.8%, and iron from 26.6 to 22.1% . The addition of sodium phytate to the casein diet containing lupin hulls decreased only the bioavailability of manganese (from 1.22 to 0.64%) and phosphorus (from 24.9 to 23.0%). The utilization of P, Mg and Fe was the lowest in animals fed the diet containing white lupin seeds.
Biology of the Intestine in Growing Animals
M.A. Gralak