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Guermani-Nicolle Lydie Villaume Christian Bau Hwei-Ming Schwertz Annie Nicolas Jean-Pierre Mejean Luc 《Plant foods for human nutrition (Dordrecht, Netherlands)》2001,56(3):239-249
Numerous factors affect plasma cholesterol and, therefore, representpotential interferences with the specific effects of diet on lipid metabolism.After casein intake, serum cholesterol levels depend on many experimentalconditions in rats, such as the type of casein, the presence or absence ofcholesterol in the diet, the age and strain of rat, the diet composition, thenutritional status. The effect of fasting duration on selected parameters wasstudied in adult male Wistar rats fed a 20% casein and 1% cholesterol-based diet. No changes were observed in total serum, lipoproteins-B andHDL cholesterol and in triglyceride values after an 8 h-fast compared tonon-fasted animals. A significant decrease was induced in total andlipoproteins-B cholesterol with a 12 h-fast. A prolonged fast resulted ina significant decrease in these parameters and in triglycerides and inHDL-cholesterol levels.Fasted animals fed heated soybean meal instead of casein did not display amarked decrease in serum lipids. It appeared that the fasting effect wasmore marked in animals fed casein than in animals fed soybeans. Theseresults showed the importance of experimental conditions such as nutritional status ofanimals when blood samples are taken in studies of the hypocholesterolemiceffect of soy protein compared to casein. 相似文献
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肉用雏鸡在绝食条件下的卵黄囊营养和维持需要 总被引:7,自引:0,他引:7
出壳后肉用仔鸡在绝食至112,58,016和130时龄时,分别测定全屠体(共64只)和卵黄囊(共63只)营养素含量。45克体重时(12时龄)维持需要量是代谢能11千卡(共60只),和蛋氨酸的耗减量,赖氨酸51毫克,蛋氨酸为18毫克。但在绝食 12至58时,能量,蛋白质,赖氨酸和蛋氨酸的耗减量,完全由卵黄囊承担。并有余量转贮于体组织内。在平均24小时内,能量转贮2千卡,蛋白质0.3克,赖氨酸7毫克, 相似文献
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用传统开路式牛用呼吸面具对24月龄母水牛绝食产热(Fasting heat production,FHP)进行研究。结果表明:①24月龄母水牛FHP为306.013kJ/kgW0.75·d;每天排出内源尿氮(EUN)为39.66g;单位代谢体重每天排出EUN为0.48g;蛋白分解产热占总产热量为17.13%;EUN与FHP比值为1.60mg/kJ。②24月龄母水牛维持净能需要:NEm=397.817kJ/W0.75·d。 相似文献
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[目的]研究松花苦桑粉的降血糖作用,为其作为辅助降血糖的功能食品提供科学依据。[方法]以正常小鼠、四氧嘧啶(ALX)诱导的糖尿病模型小鼠为材料,按体重随机分组,灌胃给药,测定空腹血糖,进行淀粉负荷糖耐量试验(OSTT)。[结果]松花苦桑粉以13.6、6.6、3.3 g/kg 3种剂量灌胃15 d,以13.6 g/kg剂量效果为好,具有统计学意义(P<0.01)。松花苦桑粉以13.6、6.6、3.3 g/kg 3种剂量灌胃35 d,其中13.6 g/kg剂量组ALX性糖尿病小鼠空腹血糖显著降低(P<0.05);高、中和低剂量组均明显降低ALX性糖尿病小鼠血糖水平。[结论]在空腹血糖试验,松花苦桑粉降低正常小鼠空腹血糖试验结果阳性,降低ALX性糖尿病小鼠空腹血糖试验结果阳性。在糖耐量试验,松花苦桑粉对ALX性糖尿病小鼠的糖耐量试验结果阳性。13.6、6.6和3.3 g/kg松花苦桑粉对ALX性糖尿病小鼠的糖耐量试验结果阳性。 相似文献
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The tilapias are one of the most important fish groups in aquaculture.In spite of this, relatively few workers have attempted to establish the feedration that would suffice for their maintenance. The results that they present,moreover, do not match, which may be attributed as much to differences inanalytical procedure as to experimental protocol. In this work, previous dataonred tilapia by the late Dr was therefore reassessed in order to arrive at more reliableresults. The dataset was based on fish between 15 and 20g wet body mass givenvarious levels (0, 0.5, 1 & 3% of body mass) of three protein level diets(low: 13.1%, LP; medium, 28.7%, MP; high: 43.9%, HP) at two temperatures (20.9& 24.3 °C). The required feeding level to maintain drybodyweight was 2.52, 2.81 and 7.05 g kg–0.8 fishweight per day for the HP, MP and LP diets respectively at the highertemperature and 1.92, 2.32 and 5.04 g kg–0.8day–1 at the lower temperature. This gave rise to anaverage Q10 coefficient of 2.22. The required feed quantity tomaintain body protein or body energy, however, was in most cases higher, partlybecause the fish initially had high protein and lipid and low ash content.Comparisons with other maintenance estimates for tilapia were also made and thereasons for discrepancies between the results obtained here and elsewherediscussed. 相似文献
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环境温度和日粮纤维素水平都可影响大白鼠的产热量及产热量占代谢能(HE/MEI)的比例,其在高纤维素日粮组较低纤维素日粮组高,环境温度为16℃和32℃时较24℃时高。环境温度和高纤维日粮还可增加大白鼠的绝食代谢产热量和生长价。维持代谢能(MEm)并不受日根纤维素的影响,但随环境温度的降低而增加。低纤维日粮和适中的环境温度可使沉积能中脂肪的比例增加。 相似文献
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The effects of fasting on insulin-like growth factor (IGF)-I, IGF-II, and IGF-binding protein (IGFBPs) mRNA in channel catfish were examined. Fed control fish (Fed) were compared to fish that had been fasted for 30 d followed by 15 d of additional feeding (Restricted). Sequence alignment and similarity to orthologous proteins in other vertebrates provided structural evidence that the 3 catfish sequences identified in the present research were IGFBP-1, -2, and -3. Prolonged fasting (30 d) reduced body weight approximately 60% (P < 0.001) and decreased IGF-I mRNA in the liver and muscle (P < 0.01). Fifteen days of re-feeding restored concentrations of hepatic and muscle IGF-I mRNA. Liver IGF-II mRNA was not affected by fasting but was increased 2.2-fold after 15 d of re-feeding (P < 0.05). Abundance of muscle IGF-II mRNA was similar between the fed control group and the restricted group throughout the experimental period. Fasting also increased liver IGFBP-1 mRNA (P < 0.05) and decreased IGFBP-3 mRNA (P < 0.01), whereas abundance of IGFBP-2 mRNA was not significantly affected. Interestingly, re-feeding for 15 d did not restore concentrations of IGFBP-1 and IGFBP-3 mRNA relative to fed control concentrations. The IGF results suggest that IGF-I and IGF-II are differently regulated by nutritional status and probably have a differential effect in promoting muscle growth during recovery from fasting. Similar to mammals, IGFBP-1 mRNA in catfish is increased during catabolism, whereas IGFBP-3 mRNA is decreased during inhibited somatic growth. The IGFBP results provide additional evidence of the conserved nature of the IGF-IGFBP-growth axis in catfish. 相似文献