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2015—2018年,在湖南省雉类繁殖基地对人工饲养的白冠长尾雉404枚卵进行了人工孵化和育雏研究。结果表明:白冠长尾雉每只雌雉平均产卵数为15.53枚,平均卵重29.48 g,卵受精率均值83.41%,人工孵化的孵化率均值82.49%,1龄幼雏的成活率均值83.47%。人工孵化温度为(37.8±0.1)℃,孵化湿度为50%—60%,孵化时间为24—25 d,白冠长尾雉在人工孵化过程中平均失重率为13.1%。白冠长尾雉幼雉破壳体重18.48—23.61 g,1—2日龄体重会有轻度下降(17.8—22.29 g),15日龄后进入快速生长发育期,30日龄达到117.3 g(106.27—175.11 g),45日龄前,育雏室采用电地暖进行控温,通风系统用于通风换气,育雏室温度随着日龄增加而逐步下降,直至降到常温。采用人工孵化与育雏技术有利于提高白冠长尾雉的繁育率和成活率,对于白冠长尾雉种群的快速复壮有重要意义。 相似文献
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目前,国内关于白冠长尾雉的研究主要集中在种群数量调查、人工繁殖、生态习性以及集群行为等方面,尚无关于白冠长尾雉疾病防治的研究。现对白冠长尾雉感染鸡异刺线虫的病例进行报道。1材料和方法2006年5月份,对河南省董寨国家级自然保护区死亡的1只白冠长尾雉进行剖检,在盲肠内检出28条线虫,经过漂洗后固定于70%酒精中。固定后的标本先用乳酸酚溶液透明,然后在光学显微镜下观察,经鉴定为蛔目(Ascaridida)异刺科(Heterakidae)异刺属(Heterakis)鸡异刺线虫(Heterakis gallina-rum)。挑选完整的雌雄线虫各10条用于形态描述和显微数码拍照,测… 相似文献
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2003年3月至8月,我们在湖北省仙居顶林场对雄性白冠长尾雉(Syrmaticus reevesii)在农田-人工林中的活动区及其栖息地组成进行了初步研究.雄性白冠长尾雉的活动区面积为33.17±12.55 ha(MCP)、21.05±5.61ha(95%Fixed Kernel),其活动区核心部分的面积为3.92±0.27 ha.活动区、核心区和活动距离的季节差异不显著.杉木(Cunninghamia lanceolata)人工林是雄性白冠长尾雉活动区和及其核心部分的主要组成部分.雄性个体在春季和夏季对栖息地都有明显的选择性,如均显著利用杉木林而回避阔叶林,但在春节明显回避灌丛.各栖息地类型的植被结构可能是决定其利用程度的主要原因. 相似文献
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用新城疫活疫苗(La Sota株)和新城疫、传染性支气管炎二联灭活疫苗免疫动物园圈养的孔雀、七彩山鸡、原鸡和白冠长尾雉4种雉鸡,于免疫前及免疫后14、21、35、90、150、210、280d分别采血检测血清中新城疫血凝抑制(HI)抗体。结果表明,孔雀免疫接种新城疫疫苗后14d就能产生较高效价HI抗体,35d抗体效价达高峰;七彩山鸡、原鸡、白冠长尾雉免疫接种新城疫疫苗后14d也能产生较高效价抗体,21d抗体水平达高峰,至免疫接种后90d抗体效价逐渐降低。整个试验过程中,孔雀产生的HI抗体效价最高,并且整齐度好,维持时间最长,至免疫接种后280d抗体效价仍能维持在7.5log2;白冠长尾雉产生HI抗体效价次之,到免疫接种后280d仍维持在6.67log2;七彩山鸡和原鸡抗体下降较快,到免疫接种后280d分别下降到5.67log和4.71log2。 相似文献
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白冠长尾雉是一种很漂亮的观赏鸟，属国家二级保护动物。北京濒危动物中心驯养繁殖白冠长尾雉获得成功，已经形成一个较大的种群。我中心自繁的幼白冠长尾雉极易感染慢性呼吸道病，主要表现为张口呼吸，病理变化主要为鼻腔和支气管充满干酪样物，导致呼吸不畅而窒息死亡。几年来，我们一直用链霉素滴鼻点眼治疗，未出过意外。２００１年５月，当我们对一育雏箱内出现呼吸道症状的幼白冠长尾雉用此法治疗６天后，雏鸡出现明显的神经症状，停药后又恢复正常，现介绍如下。一、基本情况１．动物：１月龄的幼白冠长尾雉。２．药物：华北制药集团… 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