Commercial soybean starch blocker consumption: Impact on weight gain and on copper,lead and zinc status of rats     

J. Umoren  C. Kies 《Plant foods for human nutrition (Dordrecht, Netherlands)》1992,42(2):135-142

A commercial starch blocker was used to study the digestin of starch (potato) in mature female rates for four weeks. Two levels of starch blocker were used. The first level was calculated to inhibit starch digestion at 50%, the second was calculated to inhibit starch digestion at 100%. No significant effects on the body weights (271.10±29, 277.7±43, 259.1±25 g) were found among the groups of rats at 0%, 50% and 100% inhibition levels, respectively. Feed intakes were not affected. However, fecal copper and zinc excretions increased significantly (p<0.05) due to the inhibitors. Fecal copper excretions were 0.468±0.14, 0.578±0.09, 0.617±0.07 mg/rat/week, while fecal zinc values were 0.625±0.14, 0.859±0.32 and 0.778±0.26 mg/rat/week when no inhibitor was fed, at 50% inhibition and at 100% inhibition respectively. Thus, while use of starch blockers did not promote weight loss in the mature female rats, utilization of copper and zinc were negatively affected.Published as Nebraska Agricultural Research Division Project Journal Series No. 8791. Supported by funds from the Nebraska Agricultural Division Project No. 91-031 and U.S.D.A. C.S.R.S. Project No. W-143.  相似文献   

A study on feeding hazelnut kernel oil meal as a protein source for broiler chickens     

Guray ERENER  F. BURAK AK  Nuh OCAK 《Animal Science Journal》2009,80(3):305-309

An experiment was conducted to evaluate the effect of substituting different levels of hazelnut kernel oil meal (HKM) for soybean meal (SBM) in diets for broiler. A total of 450 one-day-old female Ross 308 broiler chicks were allocated randomly to three treatment groups of 150 birds each in a randomized design. Each treatment group consisted of five replicates each of 30 chicks. All diets (in mash form) were formulated to meet nutrient concentrations recommended for broilers. The experiment lasted for six weeks. In the experiment, an SBM control (SBM) diet was compared to two HKM diets, replacing 50 (50HKM) and 100% (HKM) of SBM protein, respectively. Body weight gain, feed intake and feed conversion ratio of broilers were adversely affected ( P  < 0.05) by the HKM diets at 42 days of age. Broilers fed 50HKM and HKM had growth performances similar ( P  > 0.05). The carcass yield and abdominal fat pads of birds fed diets with SBM were higher ( P  < 0.05) than those of chicks fed the 50HKM and HKM diets. The edible inner organ weight of chicks fed diets with HKM was the heaviest ( P  < 0.05). It is concluded that SBM cannot be replaced even up to 50% with HKM in commercial broiler diet.  相似文献