共查询到20条相似文献，搜索用时 109 毫秒
1.
生态草鸡资源管理和发展前景 总被引：1，自引：0，他引：1
随着商品经济的发展和人们生活水平的提高,新型饲养模式下的生态草鸡得到了广大消费者的认可.本文针对生态草鸡的资源开发和饲养管理进行阐述,并对其经济效益和利用前景进行展望. 相似文献
2.
随着人们生活水平的不断提高,充分利用草坡、林地、农田等资源对草鸡进行放牧饲养,生产天然的绿色草鸡产品已成为养禽业发展的趋势。本文针对目前草鸡放养中存在的问题,阐述了草鸡放养的几项主要技术。 相似文献
3.
4.
草鸡集约化生态放养是传统饲养方式与现代技术的结合，生态放养草鸡是充分利用草鸡这一优良地方鸡种，生产优质、安全蛋、肉产品的全新的方式。这种饲养方式将传统的农家草鸡养殖方法和现代科学养鸡技术相结合，根据不同区域特点，利用农村林地、果园、农田、荒山等自然资源， 相似文献
5.
温岭草鸡生产基地是浙江省首批优质高效农业示范基地之一,温岭草鸡主产于温岭市坞根镇,占全市饲养量的80%以上.现拥有种鸡饲养户40多户,专业饲养大户500多户,300多人的温岭草鸡营销队伍,年孵化苗鸡600多万羽,年出栏380多万羽,形成了产、供、销一条龙的专业化、规模化、区域化温岭草鸡生产基地,每年可为养鸡业及相关产业带来近1000万元的收入,温岭草鸡的产业化发展有利于农业增效和农民增收. 相似文献
6.
7.
林地大棚散养草鸡注意要点 总被引：1，自引：0，他引：1
宿迁是典型的生态农业大市,更是全国闻名的意杨之乡,全市现有杨树成片林165万亩。近年来,各级政府十分重视生态畜牧业的发展,利用林地资源,大力推广林地大棚草鸡散养。利用林地发展草鸡养殖不但具有投资小、简便易行等优点,而且还有利于提高商品鸡的鸡肉品质和风味,适合养殖户分散饲养。同时,林地草鸡养殖还能增加土壤有机质促进杨树生长,增加林地综合利用率,从而实现林业、养殖业双丰收。根据多年的经验以及对林地大棚散养草鸡养殖户的走访调研,笔者对林地大棚散养草鸡的生产技术进行了一些研究。 相似文献
8.
近几年，随着家禽产品市场供求关系的变化和城乡人民生活水平的提高，禽业内部结构不断调整，地方草鸡作为传统的养鸡品种，得到迅速发展，地处黄海之滨的江苏盐城市适时调整饲养品种广大农户饲养的草鸡深受消费者的欢迎。 1999年全市草鸡饲养量达 4600万只。由于草鸡蛋价高于引进鸡种蛋价 50％以上，草鸡价格高于商品肉鸡 1倍以上。因此，发展草鸡已经成为很多农户致富的一条重要渠道。 一独具特色的地方品种。 盐城市地方草鸡为蛋肉兼用型。该品种适应性强，耐粗饲，发病率低。鸡蛋蛋黄色艳、蛋清浓稠；产蛋淘汰母鸡皮薄肉细，… 相似文献
9.
草鸡又称地方土种鸡，以其肉质细嫩、味美而备受青睐。从目前市场行情来看，其活鸡上市价格一般高于上市肉用鸡的1倍以上，草鸡蛋每kg的价格要高出引进品种鸡蛋约5元左右。草鸡的适应性较强，饲养比较容易，经济效益较高。但目前各地农户饲养草鸡尚未形成规模效益。因此，掌握草鸡不同时期饲养管理技术，加大草鸡饲养规模，是实现饲养草鸡致富的重要措施。 相似文献
10.
近几年来,江苏苏州吴中区各级党委、政府凭借当地丰富的山林资源和区位经济,大力发展林果茶园和山坡地饲养生态草鸡,实施产业化建设,培育和壮大了一批龙头企业。一、领导重视,部门配合吴中区委、区政府对发展生态草鸡高度重视,把发展生态草鸡作为该区2004年度“六个一”实事工程之一。多次召开农林、畜牧、水产、工商、城管等部门领导会议,专题研究发展生态草鸡问题。吴中区区委主要领导,经常深入基地进行调研和现场指导,抓基地产业化建设,抓示范推广。区委宣传部把发展生态草鸡列为2004年度重点宣传报道内容之一,通过电视、报纸等新闻媒体… 相似文献
11.
12.
13.
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
14.
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
15.
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
16.
17.
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
18.
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
19.
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