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组织滴虫是一种单细胞的原生动物,引起火鸡和鸡的盲肠肝炎(又称黑头病)的病原称为火鸡组织滴虫,其学名为 Histomonas meleagridis,中文译名为火鸡组织滴虫。鹌鹁、雉鸡、松鸡、鹧鹋和孔雀都可感染,且病症基本相同。火鸡和鸡的感染龄期一般在12周龄以下,火鸡较鸡更为易感且多见。病 相似文献
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球虫病是严重危害畜牧业生产的重要寄生虫病。在鸡病范围内,球虫是由艾美耳属的7种球虫引起的肠道寄生虫病,为了便于理解临床上我们主要分3种:盲肠球虫病、慢性小肠球虫病、急性小肠球虫病。盲肠和急性小肠球虫病主要发生于2月龄以内的鸡,10~40日龄的雏鸡发病 相似文献
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鸡球虫病是鸡感染一种或多种球虫而引起的急性原虫病,种类较多,最常见的有盲肠球虫病和小肠球虫病两种,前者由柔嫩艾美尔球虫(盲肠球虫)侵害盲肠引起,主要病变在盲肠,30日龄左右的雏鸡易感染;后者由毒害艾美尔球虫(小肠球虫)侵害小肠引起,主要病变在小肠,60日龄左右的鸡易感染。由于鸡球虫主要侵害肠道,对肠道粘膜损伤较大,如不采取有效防治措施,肠道内魏氏梭菌等厌氧菌通过损伤的组织粘膜进入体内, 相似文献
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鸡球虫病是鸡感染一种或多种球虫而引起的急性原虫病,种类较多,最常见的有盲肠球虫病和小肠球虫病两种,前者由柔嫩艾美尔球虫(盲肠球虫)侵害盲肠引起,主要病变在盲肠,30日龄左右的雏鸡易感染;后者由毒害艾美尔球虫(小肠球虫)侵害小肠引起,主要病变在小肠,60日龄左右的鸡易感染。由于鸡球虫主要侵害肠道,对肠道粘膜损伤较大,如不采取有效防治措施,肠道内魏氏梭菌等厌氧菌通过损伤的组织粘膜进入体内,往往会引发鸡坏死性肠炎,造成严重的损失。2004年10月中旬,笔者在实际工作中遇到一起鸡小肠球虫病并发坏死性肠炎的病例。现将有关发病及治疗情… 相似文献
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黄妙清 《畜牧兽医科技信息》2008,(5):92
1病原 鸡球虫病是艾美耳属的多种球虫寄生在鸡小肠或盲肠粘膜内,繁殖而引起肠道组织损伤、出血导致患鸡的一种常见原虫病,其中寄生在盲肠粘膜上皮细胞内的柔嫩艾美耳球虫的致病力量强,主要侵害10~30日龄雏鸡或35~60日龄的青年鸡,又称盲肠球虫;另一种是侵害粘膜的毒害艾美耳球虫,又称做小肠型球虫.本病是危害养鸡生产的一种重要寄生虫病. 相似文献
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黑龙江省雉鸡类资源及保护 总被引:1,自引:0,他引:1
黑龙江省雉鸡种类有8种,其中松鸡科5种,雉科3种。黑龙江省又是我国松鸡科鸟类的分布中心。柳雷鸟只有冬季偶见,镰翅鸡在黑龙江境内已经消失。因长期采伐森林,细嘴松鸡、黑琴鸡和花尾榛鸡分布区萎缩,种群数量下降。雉鸡虽然分布广,但因大面积草原灌丛被垦为农田,其栖息范围已缩小,种群数量下降。斑翅山鹞随森林采伐有扩大栖息地的趋势,将成为本省有前途的狩猎鸟。 相似文献
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球虫病是养禽业常见的疾病之一,球虫感染家禽后可以在肠道内寄生并且繁殖,引起肠道组织损伤,导致摄食、消化和营养吸收的紊乱、脱水、失血以及增加对其他病原体的易感性,并能引起体重和饲料转化率的降低。感染鸡的球虫主要有两种,盲肠球虫和小肠球虫,盲肠球虫是由柔嫩艾美耳球虫寄生于鸡盲肠内引起,一般易感日龄在3~5周,主要引 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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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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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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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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应用光镜和透射电镜技术,观察了3~6月龄比格犬甲状腺的显微和超微结构。结果表明,比格犬甲状腺实质由滤泡和滤泡旁细胞构成。滤泡呈圆形或椭圆形,直径20.22~220.00μm,平均90.80μm;由单层立方上皮细胞围成,细胞高度3.04~7.11μm,平均5.18μm,电镜下可见功能状态不同的两型滤泡上皮细胞;滤泡旁细胞很多,直径4.40~8.82μm,平均6.23μm,位于滤泡之间或镶嵌于滤泡上皮细胞之间,也可聚集在一起形成滤泡样结构,胞质内含有大量的分泌颗粒,电镜下也可见两种类型的滤泡旁细胞。 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