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1.
本文采用典型调查法 ,就小尾寒羊在豫西地区的饲养方式及农户适度饲养规模进行了评定。结果表明 ,在海拔 40 0 m以下的丘陵地区或牧坡陡峭的山区宜采用舍饲 ,在丘陵和浅山区宜采用半舍饲的饲养方式。根据对比分析 ,豫西地区农户小尾寒羊的最佳饲养规模为每个劳动力可平均饲养成年母羊 4~ 6只 ,其年末最佳存栏量为 2~ 3只成年母羊  相似文献   

2.
本文采用典型调查法,就小尾寒羊在豫西地区的饲养方式及农户适度饲养规模进行了评定,结果表明,在海拔400m以下的的丘陵地区或牧坡陡销的山区宜采用舍饲,在丘陵和浅山区宜采用兰舍饲的饲养方式。根据对比分析,豫西地区农户小尾寒羊的最佳饲养规模为每个劳动力可平均饲养成年母羊4-6只,其年末最存栏量为2-3只成年母羊。  相似文献   

3.
三、适度规模养殖。繁育场和育肥场按其设计而定。农户的饲养,根据我县实践和梁山县的经验,每户饲养2~5只为宜。根据农户饲养能力而定,克服盲目追求数量不注重经济效益的做法。 四、多种形式饲养。应根据各地的饲养条件和饲养习惯而定,目前农村主要有以下三种形式: 1.圈养。也叫做舍饲,是小尾寒羊的主要饲养形式。城郊区没有草场的地区采用此种方法,不分昼夜将羊圈在舍内饲养,利用青干牧草或青贮氨化饲料,搭配适量精料,定时定量饲喂,每日喂三次,冬天夜长可补饲夜草一次,一般是先喂精料,后喂粗饲料,吃饱为宜,同时给  相似文献   

4.
通过饲养试验、屠宰试验,研究不同饲养方式对阿尔巴斯白绒山羊成年母羊瘤胃发酵功能的影响,从而为科学制定阿尔巴斯白绒山羊成年母羊育肥方案和提高经济效益提供理论依据。采用单因子完全试验设计,将60只年龄、体重相近的淘汰成年母羊随机分为2组,每组30只。一组为对照组,在天然草场进行自然放牧育肥;一组为试验组,完全舍饲育肥,日粮采用全混合饲喂,每天饲喂2次,自由采食,育肥期60 d。在试验结束时,分别从对照组和试验组中选择6只羊进行宰后采集瘤胃液,测定pH值,氨氮(NH3-N)浓度、菌体蛋白(BCP)浓度和挥发性脂肪酸(VFA)含量。结果表明,与自然放牧饲养相比,完全舍饲饲养可显著降低阿尔巴斯白绒山羊成年母羊瘤胃液pH值(P<0.05),但能显著增加瘤胃液的NH3-N浓度(P<0.05)、BCP浓度(P<0.05)和VFA浓度(P<0.05),而对于乙酸/丙酸无显著影响(P>0.05)。完全舍饲饲养可以促进阿尔巴斯白绒山羊成年母羊的瘤胃发酵功能。  相似文献   

5.
小尾寒羊是劳动人民长期选育的一个地方优良绵羊品种。小尾寒羊素以早熟多胎、四季发情、可全年配种产羔、体格高大、早期生长发育快、肉质好、适应性好而著称。豫西地区自然地理特征是丘陵山地,全区天然草场面积大,同时野草树叶资源丰富,加上农作物秸秆等资源,是发展养羊生产的适宜地区。现结合豫西地区的实际和几年来的饲养实践,提出小尾寒羊在豫西地区的饲养管理技术,以便在生产中参考应用。   一、小尾寒羊的饲养技术   (一 )种公羊的饲养 配种期的公羊应采用牵牧或系牧,并远离母羊群。饲料种类应多样化,每天的饲料定额为…  相似文献   

6.
近年来,小尾寒羊的养殖规模正在不断扩大,为了提高小尾羊的养殖效率.本文通过对小尾寒羊生活习性特点、消化特征、饲养种公羊、种母羊的补饲等方面进行探究,以期为广大的饲养管理人员提供参考.  相似文献   

7.
为探索农区枯草季节饲养泌乳母羊的方法,进行舍饲饲养试验。试验结果:舍饲组泌乳平羊及羔羊的日增重分别比放牧组泌乳母羊及羔羊提高181.70%、96.25%,差异极显著(P<0.01);期内,放牧组母羊发病5只,死亡2只,羔羊发病7只,死亡4只,而舍饲组,、对照组母子羊无发病和死亡;舍饲泌乳线羊日补代谢能11.135MJ,可消化粗蛋白49.83g,效果良好,对照组母羊(非泌乳母羊)补为舍饲组的一半是,  相似文献   

8.
4 2 繁殖母羊的饲养管理 母羊担负着配种、怀孕、哺乳等项繁殖任务 ,要根据母羊不同的生理时期 ,采取相应的饲养措施。尤其母羊到了怀孕后期胎儿生长发育加快 ,母羊本身也需要积蓄大量养分 ,小尾寒羊又属多胎高产羊 ,所以饲养上应特别精心。放牧时 ,不要随大群远牧 ,要以舍饲为主 ,每天供给混合精料 0 3~ 0 5kg。冬春季供干草 1 5kg ,青贮或多汁料 1kg。并注意不要喂给发霉、变质、冰冻的饲草 ,以免引起流产 ,出入圈舍或补饲时要防止挤压、顶撞。母羊产羔后 ,在哺乳前期为保证有充足的奶水 ,要供给较丰富的饲料 ,每天每只供给混…  相似文献   

9.
藏羊的饲养逐渐由放牧转变为集约化发展,通过舍饲的方式来提高藏羊的生产性能和养殖量以及养殖水平。但集约化发展需要通过改变其饲养管理方式,达到舍饲养殖的最佳生长发育性能,以获得更高的经济效益。为此,本文从种公羊、母羊、羔羊、疫病防治等方面阐述舍饲藏羊饲养管理的关键技术,供舍饲藏羊养殖者参考。  相似文献   

10.
当前,青海省东部农业区饲养小尾寒羊的规模越来越大,但由于大部分养殖户是初次饲养,对小尾寒羊尤其是母羊的饲养管理技术比较缺乏,影响到养殖效益,为此根据拦隆口兽医站的饲养经验,介绍母羊的饲养管理中注意的一些问题,供同行参改。  相似文献   

11.
12.
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   

13.
采用高效液相色谱法测定癸氧喹酯干混悬剂的含量,在2-250μg/mL范围内,峰面积的常用对数与进样量浓度的常用对数呈良好的线性关系,R^2=1(n=5),平均回收率为99.24%~99.51%,RSD在0.05%~0.28%。此方法分析时间短,样品前处理简便、定量结果准确,重现性好,结果满意,为其质量控制提供了依据。  相似文献   

14.
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   

15.
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   

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.
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   

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.
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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