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1.
本文采用H-P滤波方法分解出2000年1月至2014年9月间生猪价格、猪肉价格、仔猪价格的趋势和周期,并结合猪粮比分析猪价周期波动特征。研究发现:生猪价格、猪肉价格、仔猪价格波动周期大多数超过40个月,一般下跌持续时间较长;猪粮比对识别猪价周期具有一定指向作用。动物疫病、金融危机等外部冲击引发猪价大幅周期波动,防止猪价过度下跌预案的实施在短期起一定效果。本文基于实证分析,并就如何借力"土地新政"、"金融改革"等新国策,对构建平抑猪价大幅周期波动的长效机制进行了政策思考。  相似文献   

2.
本轮猪价上涨与7月初的反弹行情颇有相似之处.但进一步分析,收储对实际供需影响力度有限,影响更多集中在情绪层面,相较于7月初的反弹来看,本轮猪价上涨的高度及持续性更强,说明当前的生猪市场存在一定矛盾. 10月以来,国内生猪市场迎来一轮久违的反弹行情.虽然就绝对涨幅来看,猪价反弹力度远称不上趋势反转,但对比历史正常年份,10月的涨幅基本接近正常年份的一轮季节性上涨.非洲猪瘟影响下,生猪价格波动幅度明显放大.  相似文献   

3.
信息集萃     
《四川畜牧兽医》2012,(10):58-59
四川9月及第三季度生猪价格监测:猪价环比上涨养殖效益缓慢回升据四川生猪监测预警系统监测,9月四川生猪价格较8月环比上涨,其中育肥猪和猪肉零售价涨幅居前,饲料原料及配合料价格稳步攀升,尤其是豆粕涨幅很大。第三季度,全省生猪价格走势均呈"V"字型走势,一改  相似文献   

4.
本文总结了湖北省生猪生产的周期性特征:“猪周期”时长平均为4年、“猪周期”价格波动趋势一致、“猪周期”内价格下行时间长于上涨的时间、“猪周期”价格跌幅有规律;指出当前湖北省生猪生产处于第7轮周期中下段:生猪价格已进入下行通道、生猪产能持续稳步恢复和猪肉进口量大幅增加;并提出了加快推动生猪在建项目建成投产、合理规划生猪产业布局、建立生猪生产监测预警机制和推动产业差异化发展等应对生猪生产周期性特征的建议。  相似文献   

5.
《北方牧业》2011,(15):10
<正>生猪价格一路高歌后,近日国内生猪价格持续出现了回落的态势,并在价格下跌后快速企稳。受猪价大幅波动的影响,各相关产业的利益如饲料、屠宰、销售等亦受到较大的影响。发展改革委价格司副司长周望军在中国政府网与网友在线交流时称:"根据价格波动的周期判断,这轮物价上涨应该接近拐点。"补不补栏?生猪养殖户面临两难抉择猪价暴涨大半年后,国家调控政策出台。恢复了取消达2年之久的对  相似文献   

6.
针对我国生猪业已经出现多次周期性波动,从生猪产量、规模饲养、疫情、信息监测以及生猪生长周期等方面分析了猪价周期性波动的原因,提出了相应的应对措施。  相似文献   

7.
1生猪市场波动规律1.1活猪价格的波动规律历年活猪价格几乎呈两头高、中间低的趋势,即每年1 ̄2月份猪价较高,3月份后开始下降,5 ̄7月份处于谷底,然后缓慢回升,10月份以后又恢复高价位。分析其原因,与我国重视节日有很大关系,春节前的猪价更高。饲料成本对猪价影响很大,纵观我国的粮食政策,近几年内粮价上涨已成定局,猪饲料价格仍将继续保持在高价位,由于饲料占了养猪60%以上的成本,根据价格成本变动机理,猪价有理由保持在较高价位。加上我国经济发展势头良好,老百姓肉食品消费量正逐步增加,作为最主要肉食品来源的生猪饲养,还有较大的发展空…  相似文献   

8.
2014年元月以来,全国生猪价格过度下跌,广大养猪者忧心忡忡,苦不堪言,一些地方出现了宰杀母猪,放任管理,疏忽防疫现象,对生猪业的健康发展、预防猪价暴跌暴涨非常不利.本文在分析猪价下跌原因以及对养殖者影响的基础上,指出了正确认识生猪价格波动规律,并指出了切实有效的应对措施,以期对广大规模养猪户提供一定的指导作用.  相似文献   

9.
中国猪肉价格波动研究——兼与美国的比较   总被引:5,自引:0,他引:5  
猪肉价格的大幅波动给我国的生猪生产及猪肉消费带来极大的影响。本文通过对1995年以来猪肉月度价格变动及1985到2006年生猪及猪肉年度价格波动的分析,探讨我国猪肉市场价格的长短期变动规律,并从生猪的生产结构、生产周期、生产成本、疫情、宏观环境及与美国的猪肉市场的国际比较等方面解析中国猪肉价格波动的原因。提出鼓励并扶持生猪的规模化生产、提高生猪行业的组织化程度、加大政府投入力度、完善动物防疫体系等主要对策措施。  相似文献   

10.
对养猪人来说,2011年是一个不平常的一年,从春节过后一反往年节后猪肉价格渐次走低的规律,价格一路攀升,虽然从2011年10月中旬开始生猪存栏及生猪价格出现波动,但12月中旬猪价又呈上涨趋势,开始逐日攀涨。那么2012年生猪市场走势又会如何,养殖户与该怎么应对呢,本栏目将为您解析。  相似文献   

11.
12.
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。  相似文献   

13.
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。  相似文献   

14.
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.  相似文献   

15.
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.  相似文献   

16.
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。  相似文献   

17.
Fractures of the anconeal process of 5 pigs ranging in age from 4 to 8 months were studied radiographically and histologically. Clinically, animals with a fracture of the anconeal process had a "tight," restricted gait. In pigs at 4.5 months of age, a radiolucent line through the base of the anconeal process was composed of fibrocartilage, fibrous connective tissue, and hyaline cartilage. Subperiosteal proliferation of woven bone was located along the cranial surface of the olecranon, adjacent to the base of the anconeal process. In older animals, the radiolucent line through the anconeal process contained variable amounts of fibrous connective tissue and fibrocartilage. The proliferation of subperiosteal bone at the base of the anconeal process formed a "buttress callus" which retained a radiolucent area between the callus and the proximal surface of the anconeal process. The latter region of radiolucency was continuous with the transversely oriented line that traversed the base of the anconeal process.  相似文献   

18.
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。 …  相似文献   

19.
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。  相似文献   

20.
乳酸杆菌益生作用机制的研究进展   总被引:2,自引:0,他引:2  
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。  相似文献   

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