2011年上半年玉米价格飙升后市上涨空间有限

一 上半年玉米价格上涨超10％ 自去年以来,玉米价格一直处于高位运行。进入2011年,国内玉米价格受需求不断增加的推动,呈现持续上涨态势。国家有关部门采取了一系列的调控措施以稳定国内玉米价格,特别是4月份国家发改委等有关部门出台的针对玉米市场的专项调控措施对抑制玉米消费产生一定的效果,但供求关系不平衡,国内玉米价格继续走强,价格一路看涨。     

7、8月份国内玉米市场行情及走势分析

众所周知,7、8月份是国内玉米需求的旺季,经营者2006年销售计划的完成和新年度收购计划的制定都进入关键时期,市场对玉米价格的上涨充满期待。下面,笔者从玉米价格的变化及影响因素对后市国内玉米市场形势作以分析。     

2007年国内玉米市场回顾和2008年展望

<正>12007年玉米市场关注热点解析1.12007年国内玉米价格走势回顾2007年国内玉米价格呈现上涨态势,但全年玉米价格波动幅度较大,上涨的持续时间明显短于下跌的持续时间。市场经历了狂热、无奈、期待、绝望、麻木、报复、冷静等种种心态的快速转变,并直接造成了价格更大波动。按照涨跌波动趋势,全年的玉米价格走势大体可划分为6个阶段:     

比价优势明显,小麦替代玉米大增

<正>2013-2014年度,全国临储玉米收储量达到7 020万t,全国玉米期末库存预计在1.05亿~1.1亿t。4月国内玉米流通量快速下降,玉米价格企稳回升。进入5月,深加工进入需求旺季,玉米价格快速回升。6月份国家启动临储拍卖政策,但因各种原因,截至7月末国内流通玉米仍偏紧。7月中旬后,河南及辽东地区旱情进一步助长了玉米价格,但本轮玉米价格上涨的核心因素在于市场流通量偏紧。2014年玉米呈大V型上涨,出乎市场预     

后期国内玉米市场行情走势分析与展望

2006年，我国绝大多数农民体会到了市场的魔力，猪肉、鸡蛋、玉米、小麦等的价格从年初的低迷到年终的高涨，变化之快让人始料不及。2007年，农产品的市场行情是继续保持、是摸高下跌，还是再上新高？目前，虽然国内玉米市场行情较去年高点有所回落，市场行情处于高位整理格局中，但这仅仅是市场自身调整的一个自然行为，玉米价格预计到6、7月份有效上涨有望启动，而8、9月份因供求关系原因玉米价格还有可能再创新高。具体分析如下：     

全国养猪形势2006年12月评

2006年12月份全国养猪形势总体看好,生猪、仔猪和猪肉市场价格均表现出持续上涨态势,有关专家预测,增长的趋势有望延伸至2007年3月份。生猪市场方面,全国生猪平均价格明显上涨。饲料原料方面,进入12月份以来,全国各地玉米价格迅速上涨,这给养殖户造成了不小的冲击。12月底时,玉     

玉米暴涨对生猪养殖成本影响分析

玉米价格上涨的原因分析 2013年、2014年度临储玉米达到7020万吨，占全年玉米产量35％。5月深加工进入生产旺季，不断调高玉米收购价格，华北地区玉米价格率先上涨，带动其他地区跟涨。7月后饲料需求进入旺季，但国内玉米流通库存偏少，成为玉米价格上涨核心原因。河南及辽宁旱情进一步加剧市场看涨氛围，贸易商惜售心理加强，推高玉米价格上涨幅度。     

玉米月报:市场偏弱运行 后期关注政策动向

<正>11月份玉米市场关注最多的是政策的变化,政策的变化会直接影响玉米价格的走向。11月25日,政策文件出台,临储收购启动,玉米市场也进入明显的政策市,但东北地区玉米价格还并无明显提振。1现货市场回顾11月份我国玉米市场整体表现弱势运行,截至11月底市场弱势趋稳。港口玉米价格行情窄幅震荡,截至月底,南北港口玉米价格上涨10元/吨。国内玉米价格有"东北升、华北降"的态势,东北产区局部上涨,其中长春地区上涨10元/吨,哈尔滨上涨40~60元/吨;华北地区局部调整,其中潍坊地区下降10~40元/吨。     

玉米价格进入季节性上涨

我国东北地区农产品的价格波动规律，一般为收获季节开始下跌、出苗期开始上涨。而从2006年秋收季节开始，东北的玉米价格就打破常规出现反季节上涨，在2007年春节过后，玉米价格出现了小幅度的回落。进入2007年4月下旬，东北地区的新季玉米开始播种，[第一段]     

6月玉米价或回调

<正>6月份国内玉米价格预计将保持振荡的态势,继续上涨的可能性相对不大。由于4-5月份国内玉米价格上涨速度过快,上涨幅度过大,已经透支了6-7月份的上涨潜力。同时随着国家调控市场力度的持续     

电感耦合等离子-质谱法测定饲料中钠、镁、铬、锰、铁、铜、锌、砷、硒、镉和铅

应用电感耦合等离子-质谱技术(ICP-MS),建立饲料中钠、镁、铬、锰、铁、铜、锌、砷、硒、镉和铅等元素的测定方法。对饲料样品的前处理方法、仪器工作参数和11种元素标准曲线进行优化;并以加标回收、分析方法比对和重复测试说明方法的准确性和精密性。方法在0～1 000 ng/ml范围内线性良好,仪器检出限为0.557 7～5.072 ng/ml,具有良好的精密度,其回收率在88.1%～104.4%之间,相对标准偏差小于5.0%。同时与原子吸收和原子荧光方法进行比对,测定结果相近。所建立的方法简单、快速,可替代原子吸收和原子荧光方法测定饲料中的11种金属元素,为饲料的质量控制提供理想的元素分析方法。     

Supplementation of broodmares with copper, zinc, iron, manganese, cobalt, iodine, and selenium

In experiment 1, 6 pregnant mares received a concentrate that contained a trace mineral premix that provided 14.3 mg Cu, 40 mg Zn, 28 mg Fe, 28 mg Mn, 0.08 mg Co, 0.16 mg I, and 0.16 mg Se/kg concentrate (group A). Seven mares received the same concentrate plus 502 mg Zn and 127 mg Cu once daily (group B). No differences (P > .05) in foal growth data, or Cu, Zn, and Fe concentrations of mare milk, mare serum, or foal serum were observed. In experiment 2, 6 pregnant mares received the same concentrate as group A (group C), and 8 mares received the same concentrate fortified with 4× the trace mineral premix (group D). Group C mares had higher serum Zn concentration at 1 day (P < 0.01) and 56 days (P < 0.04). Group C mares had higher milk Fe concentration at 28 days (P < .01), and group D mares had higher milk Cu concentration at 56 days (P < .01). Group C foals had higher serum Cu concentration at 14 days (P < .03). The results from this study provide no evidence to indicate that supplementing late gestating and lactating mares with higher dietary trace mineral levels than those recommended currently by NRC has any influence on foal growth and development, or on the Cu, Zn, and Fe concentrations of the mare milk, mare serum, or foal serum.     

Comparisons of Angus, Charolais, Galloway, Hereford, Longhorn, Nellore, Piedmontese, Salers, and Shorthorn breeds for weight, weight adjusted for condition score, height, and condition score of cows

Breed differences for weight (CW), height (CH), and condition score (CS) were estimated from records (n = 12,188) of 2- to 6-yr-old cows (n = 744) from Cycle IV of the U.S. Meat Animal Research Center's Germplasm Evaluation (GPE) Program. Cows were produced from mating Angus and Hereford dams to Angus, Hereford, Charolais, Shorthorn, Galloway, Longhorn, Nellore, Piedmontese, and Salers sires. Samples of Angus and Hereford sires were 1) reference sires born from 1962 through 1970 and 2) 1980s sires born in 1980 through 1987. The mixed model included cow age, season of measurement and their interactions, year of birth, pregnancy-lactation code (PL), and breedgroup as fixed effects for CW and CS. Analyses of weight adjusted for condition score included CS as a linear covariate. The model for CH excluded PL. Random effects were additive genetic and permanent environmental effects associated with the cow. Differences among breed groups were significant (P < 0.05) for all traits and were maintained through maturity with few interchanges in ranking. The order of F1 cows for weight was as follows: Charolais (506 to 635 kg for different ages), Shorthorn and Salers, reciprocal Hereford-Angus (HA) with 1980s sires, Nellore, HA with reference sires, Galloway, Piedmontese, and Longhorn (412 to 525 kg for different ages). Order for height was as follows: Nellore (136 to 140 cm), Charolais, Shorthorn, Salers, HA with 1980s sires, Piedmontese, Longhorn, Galloway and HA with reference sires (126 to 128 cm). Hereford and Angus cows with reference sires were generally lighter than those with 1980s sires. In general, breed differences for height followed those for weight except that F1 Nellore cows were tallest, which may in part be due to Bos taurus-Bos indicus heterosis for size.     

液相色谱-串联质谱法测定动物尿液中11种β-受体激动剂残留量的不确定度评估

采用液相色谱-串联质谱法测定动物尿液中11种β-受体激动剂残留量,对标准溶液、体积、质谱峰面积、浓缩过程及回收率等测定不确定度因素进行了分析,通过评定各不确定度分量及标准不确定度,得出11种β-受体激动剂的扩展不确定度在0.7 ～ 1.1 ng/mL范围内.由各因素对合成不确定度的贡献比分析可知,影响较大的因素为试验回收率及标准溶液浓度.     

Granulocyte isolation from whole blood of goat, sheep, cattle, horse, dog, pig, and man

A simple two step procedure for the isolation of caprine, ovine, bovine, equine, canine, porcine and human peripheral blood granulocytes is described. After enrichment of granulocytes by centrifugation, contaminating erythrocytes are lysed hypotonically. Recovery, purity, and viability of the granulocyte suspensions are determined. FACScan analysis of the cell suspensions measuring cellular size by forward and sideward light scatter is compared with the corresponding analysis of whole blood leukocytes. Constituencies of the isolated cell suspensions and loss of granulocyte subpopulations through isolation procedure is discussed with regard to granulocyte function assays.