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今年，陕西省陇县核桃总产量由2008年的5084t提高到2011年的8500t左右，增长67．2％；产值由4800万元提高到 相似文献
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《兽药与饲料添加剂》2000,(2)
赖氨酸市场分析目前，世界赖氨酸的生产能力约46．4万t／a，产量约32－35万t／a。2000年全世界赖氨生产能力将近63．5万t／a。我国有四家生产饲料用赖氨酸的企业，总生产能力为2.1万t／a，最大者为川化味之素有限公司，2000年我国赖氨酸生产能力可达5．6-6.6万t／a。中国赖氨酸市场产不应求，年消费量在3万吨以上，而国内产量仅有1万t／a。只得靠进口满足国内市场需要。据统计，预计2000年国内赖氨酸需求量为5－6万吨。如果现有几个赖氨酸生产企业的扩充计划得以实现，总生产能力基本能满足国内市场需求。目前．我国有不少企业想引进技术建… 相似文献
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2014年,一方面由于玉米价格持续高位,生产成本压力增加,厂家长期处于亏损状态而降低开工率,中国赖氨酸产量下降;另一方面出口量增长,中国地区供大于求现象有所缓解,赖氨酸价格低位反弹。根据厂家反馈信息,未来1~2年全球赖氨酸产能将达到410万t以上,中国产能将达到233万t左右。2014年中国地区蛋氨酸供应量18.8万t,需求量17.5万t。供应方面,重庆紫光固体蛋氨酸停产,南京安迪苏液体蛋氨酸供应国内。蛋氨酸进口总量下降,其中固体蛋氨酸进口略有增加,而液体蛋氨酸进口显著下降。需求方面,小麦、大麦、高粱、菜籽替代明显,添加量有所增加,但由于养殖形势低迷,禽料需求下降,以及下半年蛋氨酸价格走高,导致蛋氨酸需求下降。 相似文献
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1 2008年工作回顾
预计2008年,全区牲畜年末存栏4750万头（只）,比上年减少5．43％;肉类总产量175万t,比上年增长9％;牛奶总产量207万t,比上年增长5．49％;禽蛋总产量31．2万t,比上年增长10％;畜牧业总产值240亿元,比上年增长10．5％。农牧民畜牧业人均增收205元,占全区农牧民增收额的67％。 相似文献
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我国生猪规模化发展进入快速调整期 总被引：1，自引：0，他引：1
1 1994-2004年我国生猪生产总体概况如表1,1994-2004年我国生猪存栏量由4．15亿头左右增至4．82 亿头,增长了16．23％;出栏量由4． 21亿头左右增至6．18亿头左右, 增长了46．78％;猪肉产量由3204． 83万t增至4701．61万t,增长了 47％。出栏率由101．5％上升至128． 相似文献
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2004年山东省畜牧业持续而快速发展,畜牧业产值、肉蛋奶总产量、畜产品出口创汇等主要经济指标均居全国首位。畜牧业为促进农业和农村经济发展,增加农民收入做出了积极的贡献。根据统计,全省肉类总产量712万t、禽蛋产量433万t、奶类产量169万t,分别比2003年增长7．5％、2．1％、14．27／5。畜牧业产值914亿元,增长10％,占农业总产值的30％左右。我省畜产品产量占全国的1／10左右,每年约有1／3以上的畜产品销往省外。 相似文献
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中国是世界第一生猪生产和消费大国,近30年来生猪生产稳步发展,统计资料显示：2008年,全国生猪存栏4．62亿头,比1978年增长53．5％;生猪出栏6．09亿头,增长2．8倍;猪肉产量为4615万t,增长4．7倍。生产水平也发生明显改善：生猪出栏率分别从1978年的53．5％提高到2008年的131．6％;生猪胴体重从1980年的57．1kg,提高到76．5kg;育肥猪出栏周期从1978年的300d左右缩短到180d左右。另据统计,2011年全国生猪存栏46767万头,生猪出栏66170万头,猪肉产量5053万t,猪存栏、出栏和猪肉产量均居世界第一。 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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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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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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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
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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