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改革开放以来,吉林东部半山区黄牛饲养业为农村经济发展做出了贡献。以长春皓月公司为龙头,所形成以出口创汇为主的肉牛产业群,使吉林黄牛饲养业出现了勃勃生机。然而目前却出现了锐减的趋势。这个现象已经引起省委、省政府领导的高度重视。作为吉林东部半山区代表的磐石市,成为省领导和皓月公司调查和研究黄牛发展对策的重要之地,曾多次派人来调查研究黄牛问题。磐石市位于吉林省中南部,地处松辽平原向长白山过渡地带,幅员面积3960km^2,总人口54万,其中农业人口32万,辖13个镇、1个乡、3个街道办事处和2个省级经济开发区。实有耕地面积9.2万hm^2,其中水田2.3万hm^2,年均粮食产量55万t,曾被国家确定为商品粮基地县和全国秸秆养牛示范县。 相似文献
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为适应改革开放和畜牧市场经济发展的要求 ,甘肃省畜牧技术推广体系建设从改革入手 ,抓建设 ,强管理 ,拓经营 ,扩服务 ,有效地推动了全省畜牧技术推广体系的稳定发展和畜牧经济的持续稳定发展。1 取得的成效形成了省、地、县、乡四级服务网络。全省现有畜牧、兽医、草原、改良、动检等站 (所 )1 831个 ,其中省级 1 1个、地级 4 0个、县级2 53个、乡级 1 52 7个。技术服务中心建设取得突破性进展。全省 1 0 1个地 (州、市 )县 (市、区 )已建成畜牧技术服务中心 89个 ,其中地级 1 3个 ,县级 76个 ,在建中心 3个。全省畜牧系统有教育单位 2个 … 相似文献
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自1998年以来,我省先后在14个市、82个县(市、区)和2个省级单位开展了无规定动物疫病区项目建设,并取得了显著的成效。农业部验收组于2003年9月17日~24日在我省进行了为期8天的检查验收,共计进行了两个省级、1个市级、3个示范区的县(市、区)和1个缓冲区的县(区)级项目的检查验收。省上也将开展余下市、县(市、区)项目的验收。本刊将陆续报道农业部和省上验收的情况。欢迎项目区为本刊提供文字和图片资料。 相似文献
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《科技视界》2016,(4)
基于可持续发展实验区内涵,从经济、社会、资源、环境4个方面构建了实验区可持续发展水平的测度指标体系与模型,对2013年吉林省5个实验区可持续发展水平进行分析。结果表明:吉林省实验区可持续发展水平较低且空间差异明显,实验区发展水平的严重不均衡将是吉林省实验区建设亟需解决的问题。实验区从发展状态上存在高协调强持续、高协调低持续和低协调低持续三种类型。从空间格局上看,整体上呈现"东高中低"的格局特征。从不同等级规模实验区来看,地级城市水平远高于县级城市的水平。各实验区在区域可持续发展方面面临的问题有所不同,要推进其可持续发展水平,提升示范带动作用,应分区域有所针对,有所侧重。 相似文献
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刘贤 《河南畜牧兽医(综合版)》2022,(4)
1 保护情况
河南省畜禽种质资源丰富.现有畜禽品种资源32个,其中地方品种25个,培育品种7个.南阳牛、泌阳驴等7个品种列入国家级畜禽遗传资源保护名录,淮南猪、固始鸡、槐山羊、南阳牛等28个品种列入省级畜禽遗传资源保护名录.建设省级保种场15个(其中国家级保种场5个),省级保护区3个;采集保存了部分牛、驴、羊、猪等地方... 相似文献
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山西省绒山羊生产基地的发展概况、问题及对策 总被引:1,自引:0,他引:1
1基本情况。山西省23个绒山羊生产基地主要分布在沿黄河流域的吕梁山脉.属黄土高原沟壑区,境内地广人稀,干旱少雨,自然条件比较差.2004年基地县总人口347.2万,其中农业人口297.8万,是国家级、省级贫困人口集中的地区.基地县有两个最大的特点:一是地下基本上没有矿产资源,经济落后;二是有丰富的农副产品和草地资源.23个基地县有天然草地80万hm^2,占到全省牧草总面积的21.5%,非常适宜发展以绒山羊为主的草食动物.
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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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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