樱桃谷种鸭群肌胃溃烂的发生及其防制一例

青神县某种鸭场去年饲养樱桃谷种鸭 5 0 0只 ,该群种鸭生长到 4周龄时 ,个体均重达到1 3 5 0ｇ,超过体重标准 3 40ｇ (按英国樱桃谷种鸭育成标准 ) ,该场则采用控水控食等技术措施控制种鸭快速增重。控水控食 1周后 .种鸭出现病死情况。通过对死鸭的解剖诊断为肌胃溃烂。经即时停止控食控水 ,此病得到了控制 ,现报导如下。1　发病情况该群种鸭从 4周龄时开始采用定时定量供给饮水和饲料 ,第 3天后 ,种鸭群出现骚动不安 ,饥饿现象严重 ,每当在供料供水时 ,出现整个群体猛烈争食、抢水 ,时有突破竹笆围栏出去找食现象 ,饲养人员天天修补围栏都…     

吞食废鞋钉引发樱桃谷种鸭肌胃溃烂

青神县西龙种鸭场去年饲养的 5 0 0只樱桃谷种鸭 ,因吞食废鞋钉引发肌胃溃烂 ,现将有关情况报道如下。发病情况 :该群种鸭生长到 4周龄时 ,个体均重达到13 5 0ｇ ,超过标准体重 3 40ｇ (按英国樱桃谷种鸭育成标准 ) ,该场则采用控水、控食等技术措施控制种鸭过快增重。第 3天后 ,种鸭群出现骚动不安 ,饥饿现象严重。每当在供料供水时 ,出现整个群体猛烈争食、捻水。时有突破竹笆围栏出去找食现象 ,饲养人员天天修补围栏都难避免种鸭外逃。控食控水1周后 ,鸭群中出现病死情况。病鸭不活动 ,在鸭舍边缘、墙角独蹲一隅 ,不饮不食 ,发病后 1～ 3…     

樱桃谷种鸭群肌胃溃烂的发生及其防制

青神县西龙种鸭场２０００年饲养樱桃谷种鸭５００只，该群种鸭生长到４周龄时，个体均重达到 １３５０ ｇ，超过体重标准３４０ｇ（按英国樱桃谷种鸭育成标准），该场则采用控水控食等技术措施控制种鸭快速增重。控水控食１周后，种鸭出现病死情况。通过对死鸭的解剖诊断为肌胃溃烂。经即时停止控食控水，防止种鸭外逃后，此病得到了控制，现报导于后。 发病情况：对该群种鸭从４周龄时开始采用定时定量供给饮水和饲料，第３天后，种鸭群出现骚动不安，饥饿现象严重，每当在供料供水时，出现整个群体猛烈争食、捻水，时有突破竹笆围栏出去…     

樱桃谷种鸭创伤性肌胃溃烂

青神县西龙种鸭场去年饲养樱桃谷种鸭50 0只 ,该群种鸭生长到四周龄时 ,个体均重达1 350克 ,超过标准体重 340克 ,该场则采用控水控食等技术措施控制种鸭快速增重。控水控食一周后 ,种鸭出现病死情况。通过对死鸭的解剖 ,诊断为创伤性肌胃溃烂。经采取措施后 ,此病得到了控制 ,现报道于后。1　发病情况对该群种鸭从四周龄时开始定量供给饮水和饲料 ,第三天后 ,种鸭群出现骚动不安 ,饥饿现象严重 ,每当在供料供水时 ,出现整个群体猛烈争食、争水 ,时有突破竹笆围栏出去找食现象 ,饲养人员天天修补围栏都难避免种鸭外逃。控食控水一周后 ,鸭群…     

鸭群食物发生肌胃溃烂

某樱桃谷种鸭群从四周龄时开始定时定量供给饮水和饲料,第三天后,种鸭群出现骚动不安,饥饿现象严重,每当在供料供水时,出现整个群体猛烈争食、抢水,时有突破竹笆围栏出去找食现象,饲养人员天天修补围栏都难避免种鸭外逃.控食控水一周后,鸭群中出现病死情况,病鸭不活动,在鸭舍边缘,墙角独蹲一隅,不食不喝,发病后1～3天死亡.控水控食第10天时发病35只,死亡23只,分别占总数的7.0%和4.6%.……     

樱桃谷种公鸭阴茎脱垂的发生及其治疗

青神县养鸭场直接从英国引进父母代樱桃谷鸭SM型品种的1日龄雏鸭4000只,饲养到50周龄时,有上百只种公鸭出现阴茎脱垂不收,连续发生死亡的现象。现将发病情况和防治结果报告于后。1发病情况和主要症状父母代樱桃谷种鸭群,饲养到24周龄时,该场按英国技术指标、公母比例...     

中西兽医结合治疗种鸭群输卵管炎

中西兽医结合治疗种鸭群输卵管炎尹定良尹东升严际洲张金全（四川青神县畜牧局,６１２４６０）本县种鸭场饲养樱桃谷种鸭２７００只,其中母鸭２３５０只,完全采用封闭式圈养,平均每只占地０．８ｍ２（包括运动场、产蛋室及小型戏水池的面积）。该批种鸭从２５周龄开始...     

中西医结合治疗樱桃谷种鸭输卵管炎

本县南城种鸭场饲养樱桃谷种鸭2700只,其中母鸭2350只,完全采用封闭试圈养,平均每只占地0.8m~2(包括运动场,产蛋室及小型戏水池的面积)。该批种鸭从25周龄开始产蛋到29周龄期间,产蛋母鸭发生以产蛋困难为主症的输卵管炎疾病,课题组采用中药生化汤及抗菌素药物治疗,取得了显著的效果。现报道于后:1 发病情况及临床症状 种鸭群从25周龄开始产蛋到29周龄的一个月期间内发生357只母鸭产蛋困难,占     

樱桃谷种鸭并发葡萄球菌病和禽霍乱的诊治

某种鸭场饲养樱桃谷种鸭2000套，饲养至2月龄时开始发病，经诊断后采取措施．使病情得到了控制。临床诊断发病情况：1998年1月，某种鸭场在建场尚未完工之际，便引进2000套樱桃谷种鸭进行饲养。场内建设仍在进行，进入鸭舍的各个人口处无消毒池及其他消毒设施，饲养人员管理较混乱，常规免疫程序未严格执行。饲养至2月龄时，饲料由成品料改为自配料，2天后鸭群开始零星发病，出现死亡，其间气温降低，出现阴雨连绵天气。1周后，病情迅速蔓延，发病率超过30％，死亡率达10％。对病鸭使用青、链霉素等药物后疗效不明显。临床症状：病鸭表现为…     

中西医结合治疗樱桃谷种鸭输卵管炎

本县南城种鸭场饲养樱桃谷种鸭2700只,其中母鸭2350只,完全采用封闭式圈养,平均每只占地0．sin'（包括运动场,产蛋室及小型戏水池）。该批种鸭从25周龄开始产蛋到29周龄期间,产蛋母鸭友生以产蛋困难为主症的输卵管炎疾病,采用中药生化汤及抗菌素药物治疗,取得了显著的效果。一、发病情况及临床症状种鸭群从25周龄开始产蛋到29周龄的一个月期间发生357只母鸭产蛋困难,占母鸭总数的15．2％;死亡68只,占病鸭数的19．2％。凡是难产鸭精神萎顿,不爱运动、不下水,靠墙边屋角,独蹲一隅,驱赶时走动也非常艰难,不吃食,不喝水,体温一…     

癸氧喹酯干混悬剂含量测定的改进

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。     

商会自治的基石——商会自治规范研究

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。     

猪毛色遗传的研究进展

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。     

中华人民共和国农业部公告 第267号

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。 …     

鸡败血支原体垂直传播模式及其阻断方法

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。     

Comparison of 2 methods of centesis of the bursa of the biceps brachii tendon of horses

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.     

不同样本商品蜂蜜中硒含量的测定

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。     

乳酸杆菌益生作用机制的研究进展

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。     

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.