Effects of salinity and body mass on oxygen consumption and ammonia excretion of mudskipper Boleophthalmus pectinirostris

We evaluated the effects of salinity and body mass on the oxygen consumption rate and ammonia excretion rate of mudskipper Boleophthalmus pectinirostris under laboratory conditions. Salinity and body mass had highly significant effects on the oxygen consumption rate （Ro） and ammonia excretion rate （RN） （P〈0.01）. The interactive effects between salinity and body mass on Ro and RN were insignificant （P〉0.05） and highly significant （P〈0.01）, respectively. Ro and RN of B. pectinirostris decreased significantly as the individual body mass increased. The relationship between Ro and body mass was represented by Ro=aWb （R^2=0.956, P〈0.01）. The relationship between RN and the body mass ofB. pectinirostris was represented by RN-cW^at （R^2=0.966, P〈0.01）. The Ro/RN （O：N） ratios increased significantly as the salinity increased from 12 to 27, but decreased as salinity increased from 27 to 32. The atomic O：N ratios were significantly higher at 27 than at other salinity levels. The average O：N ratio was 25.25. Lipid and carbohydrate were the primary energy sources and protein was the secondary energy significantly higher at 27 than at other salinity levels B, pectinirostris is 27. source within the salinity range 12 32. Ro andRN were Our results suggest that the optimum salinity level for B. pectinirostris is 27.

兰州战区东片部队士兵体质量指数调查

目的了解兰州军区士兵体质量指数(BMI)分布特征,从一个侧面了解士兵营养发育和体质情况。方法通过群体抽样的方法 ,选择不同驻地士兵797人进行体质量调查。结果驻青海部队士兵BM I较低,驻宁夏和甘肃东部部队士兵BMI较高;驻青海和甘肃河西走廊部队士兵低体重率较高。结论驻陕甘宁青部队士兵BMI和低体重率存在地区特点,驻青海和甘肃河西走廊部队士兵低体重率明显高于其它地区。

居巢区1998～2009年5岁以下儿童生长发育变化

目的分析安徽省居巢区5岁以下儿童生长发育状况及存在的问题,为制定营养改善对策提供科学依据。方法利用世界卫生组织(WHO)儿童生长标准(2006年)评价该地区儿童身高体重发育状况,用Z评分方法比较1998-2009年居巢区5岁以下儿童的生长发育状况。结果 1998年至2009年,居巢区5岁以下儿童的低体重率由2.8%降至0.5%,生长迟缓率由22.9%降至2.7%,超重率由2.8%升至9.6%。该地区5岁以下儿童的体重发育状况均快于身高的发育状况,存在"生长迟缓型肥胖"问题。结论居巢区5岁以下儿童生长发育状况明显改善,但身高的发育状况落后于体重的发育状况,应强调提高儿童辅食添加质量,促进儿童的生长发育。