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据对全国470个集贸市场畜禽产品和饲料价格定点监测,6月份活猪价格止跌回升,仔猪和猪肉价格降幅趋缓,鸡蛋价格止涨下跌,生鲜乳价格持续下降,牛羊肉价格基本平稳,饲料价格继续上涨.本月猪粮比价5.7:1,比上月下降0.1个点. 相似文献
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《养猪》2004,(6)
从今年2月份以来,猪肉销售价格持续上升,引起了方方面面的关注。消费者关心生猪产品涨到何时才到头,生产者关心如此高的养猪利润是否还会继续,扩大生产会不会赶上跌价潮。10月份,全国平均毛猪价格为9.41元/千克,同比增长35.59%,但环比却下降了1.9%,猪肉价格15.03元/千克,同比增长30.02%,环比却下降了1.2%。在持续上升8个月后首次出现止涨下跌态势。养猪业一般以猪粮比价5.0/5.5作为养猪盈亏临界点,今年前9个月,平均猪粮比价为6.16,高于养猪盈亏临界点。虽然10月份生猪价格止涨下跌,但猪粮比价却达到了6.77,由于玉米价格回调幅度小于毛猪价格… 相似文献
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今年1月份，国内大豆价格终于止涨趋稳，部分地区略有回落。目前，大豆市场整体需求依旧疲软，庞大的进口库存依然制约大豆市场回暖空间，各地豆价基本稳定在每吨2400～2550元。大豆市场价格止涨趋稳的主要原因是：禽流感疫情再现，豆粕市场需求受阻。近期部分地区禽流感疫情死反复燃， 相似文献
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据对全国470个集贸市场畜禽产品和饲料价格定点监测,5月份猪产品价格跌幅进一步加大.鸡蛋价格继续回升,牛羊肉和生鲜乳价格持续下降,饲料价格略有上涨.本月猪粮比价5.8:1,比上月下降0.8个点. 相似文献
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据对全国470个集贸市场畜禽产品和饲料价格定点监测,6月,活猪价格止跌回升,仔猪和猪肉价格降幅趋缓,鸡蛋、牛羊肉价格小幅下降,生鲜乳价格持续下降,饲料价格上涨.本月猪粮比价为5.7:1,比上月下降0.1个百分点. 相似文献
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据对全国470个集贸市场畜禽产品和饲料价格定点监测,与上月相比,8月份猪产品价格快速回升,鸡蛋价格止跌上涨,牛羊肉价格微涨,生鲜乳价格略降,饲料价格延续涨势.本月猪粮比价6.4:1,比上月上升0.5个点. 相似文献
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据对全国470个集贸市场畜禽产品和饲料价格定点监测,4月份猪产品价格跌幅加大,鸡蛋价格上扬,牛羊肉和生鲜乳价格继续下降,饲料价格略有上涨.本月猪粮比价6.6:1,比3月份下降0.9个点. 相似文献
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根据对全国470个畜产品及饲料价格信息点调查统计,2月畜产品和饲料价格与上月相比,除鱼粉外,其他产品价格普遍上涨.与去年同期相比,畜产品及饲料价格全部上涨.本月猪粮比价为9.45:1,连续2个月继续保持在9.0:1以上,连续18个月高于5.5:1的盈亏平衡点. 相似文献
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魏静 《四川畜牧兽医学院学报》2009,(4):28-32
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
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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
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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
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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. 相似文献
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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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Billinghurst RC Brama PA van Weeren PR Knowlton MS McIlwraith CW 《American journal of veterinary research》2004,65(2):143-150
OBJECTIVE: To determine whether serum concentrations of biomarkers of skeletal metabolism can, in conjunction with radiographic evaluation, indicate severity of osteochondrosis in developing horses. ANIMALS: 43 Dutch Warmblood foals with varying severity of osteochondrosis. PROCEDURE: 24 foals were monitored for 5 months and 19 foals were monitored for 11 months. Monthly radiographs of femoropatellar-femorotibial and tibio-tarsal joints were graded for osteochondral abnormalities. Serial blood samples were assayed for 8 cartilage and bone biomarkers. At the end of the monitoring period, foals were examined for macroscopic osteochondrosis lesions. RESULTS: Temporal relationships were evident between certain serum biomarkers and osteochondrosis severity in foals during their first year. Biomarkers of collagen degradation (collagenase-generated neoepitopes of type-II collagen fragments, type-I and -II collagen fragments [COL2-3/4C(short)], and cross-linked telopeptide fragments of type-I collagen) and bone mineralization (osteocalcin) were positive indicators of osteochondrosis severity at 5 months of age. In foals with lesions at 11 months of age, osteochondrosis severity correlated negatively with COL2-3/4C(short) and osteocalcin and positively with C-propeptide of type-II procollagen (CPII), a collagen synthesis marker. Radiographic grading of osteochondrosis lesions significantly correlated with macroscopic osteochondrosis severity score at both ages and was strongest when combined with osteocalcin at 5 months and CPII at 11 months. CONCLUSIONS AND CLINICAL RELEVANCE: The ability of serum biomarkers to indicate osteochondrosis severity appears to depend on stage of disease and is strengthened with radiography. In older foals with more permanent lesions, osteochondrosis severity is significantly related to biomarker concentrations of decreased bone formation and increased cartilage synthesis. 相似文献