维吾尔族饮食民俗中的文化生态     

朱贺琴 《农业考古》2012,(1):243-248

"民以食为天",饮食作为人们的生存之本,一直都占据着重要地位,人们在长期的饮食历史实践中,创造和积累了丰富的的饮食文化。为了生存和提高生命质量,人们的饮食活动几乎涵盖了所有的物质和精神领域,在食物原料的选择利用上、食品生产的制作和消费上,以及由此产生不同的饮食方式、饮食生活和饮食特  相似文献   

斑尾榛鸡的生活史特征、行为和保护     

孙悦华  方昀 《中国鸟类》2010,1(3)

斑尾榛鸡(Bonasa sewerzowi)仅分布于我国西部地区的高山针叶林中,为我国的特有鸟类,国家Ⅰ级重点保护动物,被<中国鸟类红皮书>列为濒危鸟类,也是世界上体型最小和分布最南的松鸡科鸟类.1995年以来,作者运用无线电遥测技术,在甘肃省莲花山自然保护区对斑尾榛鸡的婚配行为、巢址选择、孵卵节律、冬季社群行为、食性等进行了系统研究,并通过景观生态学手段分析了斑尾榛鸡的栖息地破碎化和种群生存状况,并提出了保护对策.  相似文献   

Rodent Nutrition: Digestive Comparisons of 4 Common Rodent Species     

《Veterinary Clinics of North America: Exotic Animal Practice》2014,17(3):471-483

  相似文献   

Growth and Reproduction of Artificially Fed Cnaphalocrocis medinalis     

Jian XU  Chuan-ming LI  Ya-jun YANG  Jian-hang QI  Xu-song ZHENG  Rong-li HU  Zhong-xian LU  Qin LIU 《水稻科学》2012,19(3):247-251

The growth and reproduction of rice leaffolder,Cnaphalocrocis medinalis,fed on an artificial diet were studied.The results showed that the larvae were able to grow and pupate on the artificial diet.The durations of larvae and pupas of C.medinalis on the artificial diet were 28.1 d and 10.1 d,postponed 4.9 d and 1.7 d respectively,compared with those reared with rice leaves.The number of ovipositions was 41.6 per female,26.2% higher than that fed on rice leaves.Survival rate curve of larvae was a descent function of mortality-age,with no significant differences from the curve of larvae fed on rice leaves.The net reproductive rate (Ro),intrinsic rate of increase (rm) and finite rate of increase (λ) of the population fed on diet were 17.6928,0.0884 and 1.0924,respectively,and the mean generation time (T) and double time (td) were prolonged 4.9 d and 1.3 d in comparison with the treatment of rice leaves.Population trend index (I) was 3.26,indicating a growing number of the population of C.medinalis fed on artificial diet.  相似文献   

从西方饮食文化到东方传统膳食的思考     

闫茂华 《安徽农业科学》2014,(23):7996-7999

平衡膳食是健康的基础。分析东西方膳食结构的几种经典模式,比较东西方饮食的特点,提出了东方饮食文化对世界的贡献,同时揭示中华民族传统膳食结构的合理性以及蕴含的科学性,并提出合理膳食的相关建议。  相似文献   

Preliminary Study on Function of OsPIN1a Gene in Negative Phototropism of Rice Roots     

XU Hua wei  MO Yi wei  SHI Guo an  JIN Wen long  WANG Zhong 《中国水稻科学》2013,27(5):466

  相似文献   

超高效液相色谱-静电轨道阱质谱正负切换同时筛查定量饲料中的51种农药残留化合物     

吴剑平  张婧  周悦榕  严凤  潘娟 《中国兽药杂志》2018,52(11):47-58

建立了超高效液相色谱-静电轨道阱质谱法检测饲料中的51种农药残留物的检测方法和目标化合物的质谱数据库。饲料样品经0.1 mol/mL HCl : 甲醇=1:3提取,高速离心,经稀释后进样分析。采用Thermo Syncronis C18色谱柱(150 mm×2.1 mm, 3 μm)作为固定相,0.1 %甲酸和0.1%甲酸乙腈作为流动相进行梯度洗脱。质谱采用正负切换离子扫描,一对母离子和子离子的精确质量数进行定性,以母离子的响应强度积分面积进行定量分析。51种农药残留化合物在最优化条件下分离良好,在定量范围内均线性良好(线性相关系数r≥0.99),回收率也可达到50.61 ％～ 109.49 % ,相对标准偏差(RSD)小于9.1 %。本方法具有简便、快速、灵敏、准确等特点,适用于饲料中同时筛查和定量农药残留化合物。  相似文献   

硫酸铜日粮对肉鸡肝线粒体呼吸复合物活性的影响   总被引：1，自引：0，他引：1  

曹华斌  苏荣胜  郭剑英  李英  潘家强  李成梅  唐兆新 《畜牧与兽医》2009,41(1)

采用玉米-豆粕型饲粮研究铜(源于硫酸铜)对肉鸡肝细胞线粒体呼吸链复合物活性的影响。在对照组(Cu 11 mg/kg,称试验组A)基础上设高铜组3个(含Cu分别为110,220和330 mg/kg,分别称为试验组B、C、D),试验期60 d。在12,24,36,48,60日龄采集肝脏,提取线粒体,测定线粒体复合物Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ活性变化。结果表明,A组和B组线粒体复合物Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ活性呈增加趋势;C组和D组活性有减弱表现,尤其是48 d之后,比各组的试验前期下降明显(P<0.05)。说明高铜日粮在一定程度上对线粒体复合物活性是有利的,但过高的铜添加日粮(≥220 mg/kg)可降低肉鸡肝细胞线粒体呼吸链复合物功能活性,可以推测线粒体是机体铜过量状态下侵害的靶部位之一,而且能作用于线粒体各个复合物,造成线粒体呼吸功能减弱,呼吸链中电子传递发生故障,从而影响线粒体功能的正常发挥。  相似文献   

Ecological characteristics of ninespine stickleback Pungitius pungitius from southern Baffin Island,Canada     

Terry A. Dick 《Ecology of Freshwater Fish》2011,20(4):646-655

Abstract – Stable δ¹³C and δ¹⁵N isotopes, diet and parasites demonstrated that the prey consumed by ninespine stickleback Pungitius pungitius in a small lake on Baffin Island changed during the summer and also revealed intraspecific variation in their ecological niche. In July, there were differences in the diets of male and female ninespine stickleback as indicated by the stable isotopes, differences corroborated by the data on diet composition and the parasite fauna. Differences suggested that the sexes occupied different habitats during spawning. During July, females utilise the shallower littoral areas consuming zooplankton and benthic organisms, while males occupy deeper areas of the littoral zone feeding mainly on pelagic zooplankton. Parasite data support these observations as males had higher infections of copepod‐transmitted parasites than females. There appeared to be no segregation of resources between males and females in late August, although the diet of both male and female ninespine stickleback shifted towards more benthic organisms, compared with July. Differences in δ¹³C isotope, diet composition and infections of co‐occurring parasites demonstrated that sympatric ninespine stickleback and Arctic char Salvelinus alpinus captured in the littoral zone occupied separate niches. Ninespine stickleback preyed mainly on zooplankton and chironomids, while Arctic char consumed a greater variety of prey items, including zooplankton and larger‐sized prey such as insects and ninespine stickleback. The multifaceted approach improved our understanding of the trophic ecology of ninespine stickleback in southern Baffin Island and quantified resource use and dietary overlap with Arctic char.  相似文献   

日粮蛋白质重新分配对奶牛泌乳性能的影响     

雷云  杨葆春  雷风 《青海畜牧兽医杂志》2009,39(4):16-17

在保持泌乳牛日粮原料种类与数量不变的前提下，提高早上、中午饲粮中蛋白质含量，降低晚上饲粮中蛋白质含量，使蛋白质的数量与质量在一天中不同的生产阶段内形成相对充裕与不足，以适应养殖场的生产安排、泌乳牛的生理生产特点以及饲料的可消化属性等客观条件。通过调整，日产20kg左右标准乳的乳牛泌乳成绩提高2．1kg。与对照组相比，效果极为显著（P〈0．01）。  相似文献