2005年一季度国内养猪市场分析回顾及后市展望

2005年一季度国内养猪市场继续保持“旺热”势头，形势好于预期。活猪价虽逐渐同落．但仍保持高位运行；养殖效益在猪价、饲料价格同步同落的影响下仍保持较高赢利，处于头均盈利150元以上的高盈利区；仔猪补栏在养殖高盈利的刺激下．积极性仍然较高．仔猪价格在“春节”前随活猪价格回落而回落．但节后便与活猪价反向而行．活猪价持续回落．而仔猪价却“快速反弹”。根据前期补栏情况及当前市场形势分析，猪市后市仍将以平稳回落为主，养殖效益仍将保持在相当水平，     

2005年一季度国内养猪市场分析回顾及后市展望

2005年一季度国内养猪市场继续保持“旺热”势头，形势好于预期。活猪价虽逐渐回落，但仍保持高位运行：养殖效益在猪价、饲料价格同步回落的影响下仍保持较高赢利，处于头均盈利150元以上的高盈利区：仔猪补栏在养殖高盈利的刺激下，积极性仍然较高，仔猪价格在‘春节”前随活猪价格回落而回落，但节后便与活猪价反向而行，     

猪价持续下跌原因何在?--2005年1～5月养猪市场分析及后市展望

进入4月份后，国内各地活猪价出现明显下跌．部分地区下跌速度惊人，甚至跌至成本线附近．养猪盈利亦从头均盈利150元以上的高利润区回落至50～150元的正常盈利区——猪价持续下跌的原因何在?笔者认为，主要原因仍为“供求关系向供大于求的方向加快转变”，前期补栏效应的显现导致出栏增加。预计随着后市生猪出栏的不断增加．以及夏季肉类消费的低迷，猪价仍将保持持续下跌之势。     

猪价跌势将持续

去年底,笔者曾通过对当年种猪、生猪补栏情况的分析,大胆预测今年第二季度后,国内活猪价格将出现明显下跌。果然,近期,国内各地猪价出现明显下跌,预计,随着后市生猪出栏的不断增加以及疫病的影响,猪价仍将保持持续下跌之势。随着各地猪价的回落,养猪盈利已经从头均盈利150元以上的高利润区回落至50-150元的正常盈利区,养猪盈利有可能在6月份跌至微利区,在三季度跌至盈亏平衡线附近。     

仔猪价格行情较为低迷 来年行情扑朔迷离

十月底,国内猪市呈现区间内弱势波动的格局,部分地区猪价回落,但幅度较为有限,养殖效益仍然维持在盈利区间内。国内仔猪市场较为低迷,大部分地区仔猪补栏清淡,且售价持续性下滑。业内人士分析认为,除了目前补栏赶不上春节出栏的原因外,影响养殖户补栏的主要原因是2012年上半年、今年上半年国内毛猪价格均出现高位大幅回落,养殖户效益显著亏损的局面,尤其是今年3～4月份,养殖效益亏损严重,因此不少养殖户不看好明年上半年的市场行情。     

猪价反弹不及预期反转时间尚未到来

第一．2012年上半年猪肉价格以回落为主．近期价格反弹不及预期。当前生猪养殖行业处于此轮猪周期的下行阶段．能繁母猪存栏处于高位．育肥猪供过于求的局面尚未改变．猪价年初以来大幅回落。据了解．当前肥猪养殖基本陷于亏损局面．仔猪养殖盈亏平衡．能繁母猪养殖仍能够保持头均约500元的盈利,     

专家预测:下半年生猪价格将会稳定拐点可能出现在九月以后

<正>据监测,全国生猪市场依旧保持震荡格局,均价维持在13.73元/千克,自繁自养头均盈利为90元/头,后备母猪价格继续回落,补栏意愿有所遏制!7月8日,全国仔猪均价30.64元/千克,呈弱势上涨势头,但与去年同期相比,跌幅达26.9%,仔猪补栏积极性有所减缓。从仔猪与活猪比价关系来看,当前仔猪/活猪为2.2:1,达到2008年高位水平,从历史角度来看,仔猪/活猪比价必然会回归到1.5:1的正常水平,要么活猪价格大幅上涨,要么仔猪价格回落,     

当前猪价持续下跌原因及后期走势分析

春节需求旺季过后，随着终端消费需求的萎缩，供求关系的变化，猪价肉价均呈下滑趋势。3月10日全国生猪出栏均价降至15．35元，千克，猪粮比价跌破7，近期养殖盈利加速缩水，明显打击仔猪补栏行情，仔猪价格已停止上涨，不排除下跌的可能，同时二元母猪价格跌势有所放大。时下养猪人相对比较谨慎、理性，在当前人工、饲料成本较高情况下，如果全年没有暴发大范围疫病或者灾害等不可预见的条件下，2012年生猪市场不会出现以往暴涨过后暴跌的“猪周期”行情。养猪行情仍有望保持“稳”字贯穿全年。     

2016年1季度我国生猪生产形势及后期走势分析

养猪行业的暴利时代已经结束,微利时代宣告到来,养殖业主将会越来越关注市场的变幻,越来越注重大数据的运用,中国养猪行业将进入一个更加理性的时代.总结了2016年第一季度我国生猪生产形势,包括猪价、肉价在春节前双双上涨;猪粮比价从“绿色区域”步入“蓝色区域”并跨入“黄色区域”,养殖盈利可观;生猪存栏继续下滑,能繁母猪存栏持续偏弱调整;玉米价格继续震荡下行,豆粕价格仍在弱势调整;仔猪高价位抑制了补栏积极性.此外,分析了猪价节后小幅回落原因,并对后期猪价整体走势进行预测.     

2010年11月上旬至12月上旬养猪形势分析及后市预测

12010年11月上旬至12月上旬养猪市场运行特点 1．1仔猪价格11月中上旬持续走高,随后逐周回落 从今年6月份开始,生猪价格持续走高,养殖利润进一步扩大,11月中上旬虽受冬季饲养成本增加以及仔猪成活率不高的影响,养殖户为了能够赶上猪价上涨的好时机,母猪及仔猪补栏积极性持续回升。但由于越来越多的地区疫情开始严峻,生猪价格出现回落迹象,养殖户补栏积极性受到一定影响,仔猪价格逐周下滑。     

商会自治的基石——商会自治规范研究

在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。     

癸氧喹酯干混悬剂含量测定的改进

采用高效液相色谱法测定癸氧喹酯干混悬剂的含量,在2-250μg/mL范围内,峰面积的常用对数与进样量浓度的常用对数呈良好的线性关系,R^2=1(n=5),平均回收率为99.24%~99.51%,RSD在0.05%~0.28%。此方法分析时间短,样品前处理简便、定量结果准确,重现性好,结果满意,为其质量控制提供了依据。     

猪毛色遗传的研究进展

本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。     

Comparison of 2 methods of centesis of the bursa of the biceps brachii tendon of horses

REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air.     

不同样本商品蜂蜜中硒含量的测定

用硝酸和高氯酸消化蜂蜜,使硒游离出来,在微酸性环境下,硒和2,3-二氨基萘(DAN)生成有较强荧光的物质,用环己烷萃取,在激发波长378nm,荧光波长518nm处测定其荧光强度。蜂蜜中硒含量范围:0.10～0.82μg/g。表明:蜂蜜应视为天然富硒营养品。     

乳酸杆菌益生作用机制的研究进展

乳酸杆菌作为益生菌广泛用于人和动物。本文综述了乳酸杆菌改善宿主健康的机制。乳酸杆菌可通过产生抗菌物质如乳酸、过氧化氢、细菌素,或者通过竞争营养或肠道黏附位点来抑制致病菌;通过诱导黏附素的分泌或阻止细胞凋亡而增强肠道的屏障功能,从而保护肠道。文章重点讨论了乳酸杆菌表面成分（表面蛋白、脂磷壁酸和肽聚糖）与肠道受体（Ｃ型凝集素受体、Ｔｏｌｌ样受体和 Ｎｏｄ样受体）,阐述了他们结合后启动免疫调节信号,调控肠道免疫功能以发挥改善健康作用的机制。     

中华人民共和国农业部公告 第267号

为贯彻落实《兽药生产质量管理规范》(简称《兽药GMP》),进一步推动兽药GMP实施进程,我部制定了《兽药生产质量管理规范检查验收办法》,现予公告。本公告自2003年6月1日起施行。附件:兽药生产质量管理规范检查验收办法二○○三年四月十日第一章 总则 第一条 为推动《兽药生产质量管理规范》(以下简称兽药GMP)的实施,规范兽药GMP检查验收工作,制定本办法。 第二条 农业部负责全国兽药GMP管理和检查验收工作;负责制修订兽药GMP检查验收管理规定;负责兽药GMP检查员队伍建设和监督管理工作,负责国际兽药贸易中GMP互认工作。 …     

鸡败血支原体垂直传播模式及其阻断方法

以国际标准强毒Ｒ株人工感染非免疫产蛋鸡,定时扑杀,分别从鼻窦、眶下孔、气管、肺、气囊、卵巢和输卵管分离ＭＧ,并收集感染鸡所产蛋分离ＭＧ。结果表明,人工感染４８小时后上、下呼吸道及肺已被全面感染,９６小时气囊已被感染,１２０小时输卵管已能分离到ＭＧ,卵巢始终分离不到ＭＧ。人工感染鸡自１４４小时便能在其所产蛋中分离出ＭＧ。药物治疗能在７２小时内消除感染,油乳剂苗则需２４天后逐渐降低蛋内ＭＧ分离率,药物卵内注射、种蛋药浴、高温处理均能杀死卵内ＭＧ,但以研制的种蛋浸泡剂药浴效果为最好。     

Effects of size of ingestively masticated fragments of plant tissues on kinetics of digestion of NDF

Ingestively masticated fragments were collected and sized via sieving. Different sizes of esophageal masticate and ruminal digesta fragments, and ground fragments of larger masticated pieces were incubated in vitro, and undigested NDF remaining at intervals of up to 168 h of incubation was determined. The ruminal age-dependent time delay (tau) for onset of digestion of NDF was positively correlated (P < 0.004) with the mean sieve aperture estimated to retain 50% of the fragments between successive sieve apertures (MRA). Degradation rate of potentially degradable NDF (PDF) and level of indigestible NDF were not related (P > 0.10) to MRA of masticated and ground fragments. Estimates of tau were positively related to MRA, with slopes of bermudagrass < corn silage < ruminal fragments of corn silage. It was concluded that fragment size-, and consequently, ruminal age-dependent onset of PDF degradation of a mixture of different fragment sizes results in an age-dependent rate of degradation of the more rapidly degrading of two subentities of PDF. Models are proposed that assume a tau before onset of simultaneous degradation of PDF from two pools characterized as having gamma-modeled age-dependency and age-constant rates. The ruminal age-dependent pool seems to be associated with the faster-degrading pool, and its rate parameter increases with range in MRA in the population of fragments. Conceptually, the ruminal age-dependent rate parameter for PDF degradation seems to represent a composite of several effects: 1) effects of the size-dependent tau; 2) range in MRA of the population of ingestively masticated fragments; and 3) subentities of PDF that degrade via more rapid age-dependent rates compared with subentities of PDF that degrade via age-constant rates. The estimated fractional rates of ruminative comminution of ingestively masticated fragments (0.060 to 0.075/h) were of a magnitude similar to the mean fractional rates of PDF digestion (0.030 to 0.085/h), which implies that ruminative comminution may be first-limiting to fractional rate of PDF digestion. The in vivo roles of ingestive and ruminative mastication of fragments on PDF degradation must be considered in any kinetic system for estimating PDF digestion in the rumen. These results and others in the literature suggest that the rate of surface area exposure rather than intrinsic chemical attributes of PDF may be first-limiting to degradation rate of PDF in vivo.