Influence of dietary isomaltooligosaccharides on nutrient digestibility and concentration of glucose, insulin, cholesterol and triglycerides in serum of growing pigs

Dietary isomaltooligosaccharides supplementation did not affect any of the measured parameters
Tuesday 20 October 2009 (8 years 6 months 4 days ago)
The objective of the present experiment was to study the effect of isomaltooligosaccharides (IMO) on nutrient digestibility and serum insulin, glucose, cholesterol and triglycerides concentrations in growing pigs.

A total of 8 Large White castrated male pigs were allocated in a 4x4 Latin square design during 12 days. Four diets were formulated by adding 0, 25, 50 and 75g IMO/kg to the basal diet. Total faeces and urine were collected from day 9 to day 12 of each experimental period. At the end of each experimental period all pigs were fasted for 12h and bled from the inferior vena cava. Glucose, cholesterol and triglycerides in serum were analysed with an automatic analyzer using commercial kits. Insulin was determined using a specific radioimmunoassay kit. The dry matter of feed and faecal samples, the nitrogen content of feeds, faeces and urine, Ca, P and total ash were determined. The total tract apparent digestibility (TTAD) of nutrients and the N retention were calculated.

Dietary inclusion of IMO did not affect TTAD of organic matter, crude protein, total ash and P, but tended to increase TTAD of DM (P=0.078) and Ca (P=0.065). Dietary inclusion of IMO did not affect serum insulin and cholesterol concentration but decreased serum glucose concentration (P=0.017) and tended to decrease serum triglycerides concentration (P=0.061). The inclusion of IMO in the diet reduced glucose concentration in serum and tended to reduce triglycerides concentration and to increase TTAD of Ca and dry matter.

An increase in the level of IMO from 25 to 50 or 75 g/kg did not affect any of the parameters studied.

YJ Li, GY Zhao, W Du, TJ Zhang. Animal Feed Science and Technology 2009, 151: 312-315.

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