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江文君 《河南畜牧兽医(综合版)》2003,(10)
近年来,时常发生注射过疫苗的猪在有效免疫期内仍然染上猪瘟的现象。其主要原因就是免疫程序不科学,仔猪虽然注射了猪瘟疫苗,但由于吸吮母猪初乳而获得母源抗体的干扰,使注入体内的猪瘟疫苗没能发挥出应有的抗原性,因而不能刺激猪体产生抵抗猪瘟病毒的抗体,为避免上述现象的发生,可实行仔猪超前免疫。超前免疫,就是仔猪产下后,在完成擦身、断脐、剪牙、称重等一系列接产工作之后,马上给仔猪注射猪瘟兔化弱毒疫苗5头份,经过一小时左右,再让仔猪吮吸初乳。60～65日龄时,再加强免疫一次。这种方法,可克服母源抗体干扰,使仔猪尽早获得主动免疫。… 相似文献
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一．防过早
仔猪应在40～45日龄时注射猪瘟疫苗，不宜过早。因为仔猪出生后，可从母体或初乳中获得母源抗体。并于出生后24h达到高峰，以后逐渐降低，到60日龄才消失，在此期间，母源抗体可保护仔猪，预防猪瘟。如果过早地注射疫苗，就会破坏母源抗体，使仔猪容易发生猪瘟。因此，对刚生下几天的仔猪注射猪瘟疫苗是不科学的，应等到母源抗体开始消失时，再给仔猪注射猪瘟疫苗。 相似文献
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一．防过早
仔猪应在40～45日龄时注射猪瘟疫苗，不宜过早。因为仔猪出生后，可从母体或初乳中获得母源抗体。并于出生后24h达到高峰，以后逐渐降低，到60日龄才消失，在此期间，母源抗体可保护仔猪，预防猪瘟。如果过早地注射疫苗，就会破坏母源抗体，使仔猪容易发生猪瘟。因此，对刚生下几天的仔猪注射猪瘟疫苗是不科学的，应等到母源抗体开始消失时，再给仔猪注射猪瘟疫苗。 相似文献
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仔猪在20日龄时由乳汁(主要是初乳)获得的母源抗体逐渐枯竭,在60日龄前会出现一般免疫空白,所以在受猪瘟威胁地区对20日龄仔猪注射猪瘟疫苗是必要的。近年来本猪场经常因注射猪瘟疫苗而发生仔猪过敏反应。现将我们应用补硒方法防止仔猪过敏的情况报道如下。一、仔猪过敏的发生情况及预防效果过敏症状在注射猪瘟疫苗数分钟后即发 相似文献
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1999年 5月 16日 ,遵义县南白镇安澜办事处个体户江华猪场实行猪瘟疫苗超前免疫。从 5月 16日至 8月 2日超免的 2 8窝 2 5 5头仔猪全部发生过敏性休克 ,经抢救全部治愈 ,报告如下 :1 免疫方法疫苗为贵州生物药厂生产的猪瘟弱毒细胞苗。超免用的注射器 ,针头高温消毒 ,疫苗用生理盐水稀释 ,生后吃初乳前的仔猪 ,每头肌注猪瘟弱毒细胞苗 2头份 ,注射部位用75 %酒精消毒 ,注射疫苗 2小时后让仔猪吃初乳。2 症 状仔猪注射疫苗后到吃初乳前 2小时 ,仔猪无任何不良反应 ,仔猪吃初乳后 15分钟左右开始出现症状 ,仔猪耳尖、耳边首先出现青紫 ,随… 相似文献
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吴凡 《河南畜牧兽医(综合版)》2009,30(3):29-29
1生长肥育猪的免疫程序
1日龄进行猪瘟弱毒苗超前免疫,仔猪出生后在未食初乳前,先注射1头份猪瘟弱毒苗,隔1～2小时后再让仔猪吃初乳,这种方法适用于常发猪瘟的猪场：7～15日龄接种气喘病疫苗：10日龄肌肉或皮下注射传染性萎缩性鼻炎疫苗;10～15日龄接种仔猪水肿病疫苗：2013龄肌注猪瘟疫苗; 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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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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本试验旨在研究两种绿头鸭（白羽绿头鸭和绿头鸭）肌肉营养组成和价值,为绿头鸭肉产品的开发利用提供基础数据和理论依据。选择白羽绿头鸭和绿头鸭60只（每个品种各30只,公母各半）,依照国家标准测定胸肌粗蛋白质、粗脂肪、胆固醇含量及氨基酸、脂肪酸、微量元素和维生素的组成和含量,并对胸肌进行氨基酸评价及脂肪酸营养价值评价。结果显示,白羽绿头鸭肌肉粗蛋白质含量显著低于绿头鸭（P<0.05）;两种绿头鸭肌肉中均检测到17种含量大于0.01%的氨基酸,其中白羽绿头鸭肌肉苏氨酸、组氨酸、丝氨酸和脯氨酸含量显著高于绿头鸭（P<0.05）,赖氨酸、谷氨酸和精氨酸含量显著低于绿头鸭（P<0.05）;检测到13种含量均大于0.01%的脂肪酸,其中白羽绿头鸭硬脂酸和油酸含量显著低于绿头鸭（P<0.05）;检测到9种矿物质元素（钠、镁、钾、钙、锰、铁、铜、锌和硒）,两种绿头鸭差异不显著（P>0.05）;检测到8种维生素,白羽绿头鸭肌肉维生素B1含量显著高于绿头鸭（P<0.05）,维生素D和维生素E含量显著低于绿头鸭（P<0.05）。两种绿头鸭肌肉氨基酸比例接近世卫组织推荐的理想模式,富含人体所需的矿物质元素和维生素,具有广阔的开发利用前景。 相似文献
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Reasons for performing study: Clinical experiences indicate that centesis of the lateral compartment of the femorotibial joint is often unsuccessful. Objective: To determine the accuracy of 2 published and 2 unpublished techniques of centesis of the lateral compartment of the femorotibial joint. Hypothesis: It was hypothesised that a drug can be administered into the lateral compartment of the femorotibial joint via a diverticulum of this joint that surrounds the medial aspect of the long digital extensor tendon and that this technique is more accurate than described techniques of centesis of this compartment. Methods: Twenty‐four stifles of 12 horses were divided equally into 4 groups and a radiocontrast medium injected into the lateral compartment of the femorotibial joint of each group using a hypodermic needle inserted: 1) caudal to the lateral patellar ligament and proximal to the tibial plateau, 2) caudal to the long digital extensor tendon and proximal to the tibial plateau, 3) between the long digital extensor tendon and bone of the extensor groove of the tibia or 4) directly through the long digital extensor tendon until it contacted bone. Twelve veterinary students who had no experience using any of these techniques performed the injections. Accuracy of each technique was determined by examining radiographs obtained after injecting the contrast medium. Results: The most successful technique for arthrocentesis was by inserting a needle through the long digital extensor tendon. This approach was successful in all attempted cases, whilst other techniques had lower rates of success. Conclusions: The lateral compartment of the femorotibial joint can be accessed accurately by inserting a needle through the long digital extensor tendon as it lies within the extensor groove. Other techniques may not be as accurate for clinicians inexperienced in arthrocentesis of the lateral compartment of the femorotibial joint. 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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Marioni-Henry K Vite CH Newton AL Van Winkle TJ 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2004,18(6):851-858
A retrospective review of records of 205 cats with histologically confirmed disease of the spinal cord was performed to identify the prevalence of disease in this nonrandomly selected population of cats. Clinical records were reviewed, and age, duration of neurologic illness, and clinical and histopathologic findings in cats with spinal cord disease were abstracted. Disease processes were classified into 7 categories and 23 groups. The most common diseases affecting the spinal cord of cats were feline infectious peritonitis (FIP), lymphosarcoma (LSA), and neoplasia of the vertebral column secondarily affecting the spinal cord. Information on age, onset and duration of clinical signs, and lesion localization at the postmortem examination in cats belonging to the 7 categories of disease were analyzed to create a practical list of differential diagnoses. Cats were also subcategorized into 3 groups based on their age at death. FIP was the most common disease of cats younger than 2 years of age. LSA and vertebral column neoplasia were the most common diseases affecting cats between 2 and 8 years of age. Vertebral column neoplasia was the most common disease affecting cats older than 8 years of age. Results of this histopathologic study showed that FIP and LSA were the most common disease processes affecting the spinal cord of cats. However, at least 21 other groups of diseases and their relative prevalence were identified. 相似文献
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根据JJF1059-1999《测量不确定度评定与表示》建立了高效液相色谱法测定鸡肉中土霉素残留测量的不确定度评定方法,评定过程包括建立测量程序、分析不确定度来源、对不确定度分量进行量化。将不确定度归类为两大类。随机效应导致的不确定度可以通过一系列具有统计意义的重复观测值进行A类评定;系统效应导致的不确定度通过各测量器具、设备的说明书、校准证书提供的参数进行B类评定。本方法鸡肉中土霉素残留量的相对合成标准不确定度约为3.9%。 相似文献
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以5个金柑属品种、枳壳、软枝酸橘及广西土柠檬实生苗为材料,进行复水成活率、旱害指数、叶片相对含水量、超氧化物歧化酶（SOD）、过氧化物酶（POD）、过氧化氢酶（CAT）、丙二醛（MDA）、脯氨酸等生理指标及隶属函数的综合分析,为柑橘抗性砧木品种选育提供参考。结果表明：胁迫20d复水后的成活率融安滑皮金柑和长寿金柑最高,为100%,软枝酸橘最低,为88.9%;随着干旱胁迫加剧,各品种的旱害指数呈上升趋势,长寿金柑的旱害指数最低,为0.25,软枝酸橘的旱害指数最高,为0.61;从叶片相对含水量的结果来看,长寿金柑的变化幅度最小,软枝酸橘的变化幅度最大,在第18d时分别为61.19%和37.85%;3种保护酶之间相互协同作用减轻植株受害程度,其活性变化幅度与丙二醛和脯氨酸的含量变化相似。利用隶属函数法综合分析,得出各品种的抗旱性强弱依次为长寿金柑>枳壳>融安滑皮金柑>融安金柑>山金柑>广西土柠檬>金枣>软枝酸橘。 相似文献