Female Wister rats aged 8 weeks were randomly divided into sham operation group, ovariectomized (OVX) control group, and 20VX groups fed with soy isoflavone crude extract supplementation. The rats had free access to...Female Wister rats aged 8 weeks were randomly divided into sham operation group, ovariectomized (OVX) control group, and 20VX groups fed with soy isoflavone crude extract supplementation. The rats had free access to high fat diet and water for 9 weeks. No significant difference was found in body weight (BW), total abdominal fat, food intake and food utilization rate between OVX control group and 20VX groups. However, the fasting blood glucose and blood lipid levels were significantly higher in 20VX groups than in OVX control group (P〈0.05). Intraperitoneal glucose tolerance test (IGTI") showed that the area under AUC was smaller in 20VX groups than in OVX control group (P〈0.05). These findings showed that soy isoflavone crude extract supplementation can improve glucose tolerance and prevent high fat diet-induced insulin resistance in ovariectomized rats.展开更多
This study was conducted to determine proximate composition and profile of fatty acid of beef from Arsi, Borana and Harar Cattle</span><b> </b><span style="font-family:Verdana;">breed...This study was conducted to determine proximate composition and profile of fatty acid of beef from Arsi, Borana and Harar Cattle</span><b> </b><span style="font-family:Verdana;">breeds</span><b> </b><span style="font-family:Verdana;">in Ethiopia. A total of 39 bulls with three age categories were used for the study. The bulls were purchased from mixed crop livestock system (Arsi and Harar cattle breeds) and Ranch (Borana cattle breed). Complete randomized design was used for the study. <i></span><i><span style="font-family:Verdana;">Longissimus dorsi</span></i><span style="font-family:Verdana;"></i> muscle was used to evaluate proximate composition and profile of fatty acid. The result of the study indicated that mean of percentage of dry matter, ash, crude fat and crude protein were ranging 22.43 </span></span><span style="font-family:Verdana;">-</span><span style="font-family:Verdana;"> 24.26, 0.32</span><span style="font-family:""> </span><span style="font-family:Verdana;">-</span><span style="font-family:""> </span><span style="font-family:Verdana;">1.28, 4.32</span><span style="font-family:""> </span><span style="font-family:Verdana;">-</span><span style="font-family:""> </span><span style="font-family:Verdana;">7.88, 17.21</span><span style="font-family:""> </span><span style="font-family:Verdana;">-</span><span style="font-family:""> </span><span style="font-family:Verdana;">22.76, respectively. At age younger than 3 years, Harar bulls contain more crude fat compared to Arsi bulls while the vice versa was true for crude protein. The concentration of polyunsaturated fatty acid (PUFA) was higher than saturated fatty acid (SFA) in the three breeds studied across all age categories. However, significantly higher (P</span><span style="font-family:""> </span><span style="font-family:Verdana;"><</span><span style="font-family:""> </span><span style="font-family:Verdana;">0.01) PUFA and lowest (P</span><span style="font-family:""> </span><span style="font-family:Verdana;"><</span><span style="font-family:""> </span><span style="font-family:Verdana;">0.05) SFA found in Harar breed whereas the opposite hold true for Arsi bulls. Ratio of n-6: n-3 in the muscle of bulls under the study was ranged from 2.10 to 2.57. Concentration of PUFA and MUF in muscle of the three breeds were significantly affected (P</span><span style="font-family:""> </span><span style="font-family:Verdana;"><</span><span style="font-family:""> </span><span style="font-family:Verdana;">0.05) by age. From the study it was concluded that Arsi, Boran and Harar bulls under the three age categories contained more than 3% minimum crude fat that is required to insure palatability of the beef. The higher concentration of PUFA over SFA in all breeds across age categories indicated that the meat from these cattle breeds has less risk hazard to human health. However, a strategy need</span><span style="font-family:Verdana;">s</span><span style="font-family:Verdana;"> to be developed to increase the ratio of n-6: n-3 to the nutritional recommendations by the World Health Organization which is 4:1 to 5:1. Moreover, the cause of the difference in proximate composition and profile of fatty acid between breeds under the study at different age categories needs to be investigated.展开更多
基金supported by the National Natural Science Foundation of China(30972439)Bureau of Health Foundation,Heilongjiang Province(2006-300),(2012-768)Youth Fund of School of Public Health,HMU
文摘Female Wister rats aged 8 weeks were randomly divided into sham operation group, ovariectomized (OVX) control group, and 20VX groups fed with soy isoflavone crude extract supplementation. The rats had free access to high fat diet and water for 9 weeks. No significant difference was found in body weight (BW), total abdominal fat, food intake and food utilization rate between OVX control group and 20VX groups. However, the fasting blood glucose and blood lipid levels were significantly higher in 20VX groups than in OVX control group (P〈0.05). Intraperitoneal glucose tolerance test (IGTI") showed that the area under AUC was smaller in 20VX groups than in OVX control group (P〈0.05). These findings showed that soy isoflavone crude extract supplementation can improve glucose tolerance and prevent high fat diet-induced insulin resistance in ovariectomized rats.
文摘This study was conducted to determine proximate composition and profile of fatty acid of beef from Arsi, Borana and Harar Cattle</span><b> </b><span style="font-family:Verdana;">breeds</span><b> </b><span style="font-family:Verdana;">in Ethiopia. A total of 39 bulls with three age categories were used for the study. The bulls were purchased from mixed crop livestock system (Arsi and Harar cattle breeds) and Ranch (Borana cattle breed). Complete randomized design was used for the study. <i></span><i><span style="font-family:Verdana;">Longissimus dorsi</span></i><span style="font-family:Verdana;"></i> muscle was used to evaluate proximate composition and profile of fatty acid. The result of the study indicated that mean of percentage of dry matter, ash, crude fat and crude protein were ranging 22.43 </span></span><span style="font-family:Verdana;">-</span><span style="font-family:Verdana;"> 24.26, 0.32</span><span style="font-family:""> </span><span style="font-family:Verdana;">-</span><span style="font-family:""> </span><span style="font-family:Verdana;">1.28, 4.32</span><span style="font-family:""> </span><span style="font-family:Verdana;">-</span><span style="font-family:""> </span><span style="font-family:Verdana;">7.88, 17.21</span><span style="font-family:""> </span><span style="font-family:Verdana;">-</span><span style="font-family:""> </span><span style="font-family:Verdana;">22.76, respectively. At age younger than 3 years, Harar bulls contain more crude fat compared to Arsi bulls while the vice versa was true for crude protein. The concentration of polyunsaturated fatty acid (PUFA) was higher than saturated fatty acid (SFA) in the three breeds studied across all age categories. However, significantly higher (P</span><span style="font-family:""> </span><span style="font-family:Verdana;"><</span><span style="font-family:""> </span><span style="font-family:Verdana;">0.01) PUFA and lowest (P</span><span style="font-family:""> </span><span style="font-family:Verdana;"><</span><span style="font-family:""> </span><span style="font-family:Verdana;">0.05) SFA found in Harar breed whereas the opposite hold true for Arsi bulls. Ratio of n-6: n-3 in the muscle of bulls under the study was ranged from 2.10 to 2.57. Concentration of PUFA and MUF in muscle of the three breeds were significantly affected (P</span><span style="font-family:""> </span><span style="font-family:Verdana;"><</span><span style="font-family:""> </span><span style="font-family:Verdana;">0.05) by age. From the study it was concluded that Arsi, Boran and Harar bulls under the three age categories contained more than 3% minimum crude fat that is required to insure palatability of the beef. The higher concentration of PUFA over SFA in all breeds across age categories indicated that the meat from these cattle breeds has less risk hazard to human health. However, a strategy need</span><span style="font-family:Verdana;">s</span><span style="font-family:Verdana;"> to be developed to increase the ratio of n-6: n-3 to the nutritional recommendations by the World Health Organization which is 4:1 to 5:1. Moreover, the cause of the difference in proximate composition and profile of fatty acid between breeds under the study at different age categories needs to be investigated.