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安徽某奶牛场奶牛发生了一起急性乳房炎,选择其中两头病牛乳汁样品,分别对其病原进行分离与鉴定。经细菌学检验表明,该场奶牛的急性乳房炎是由不溶血性金黄色葡萄球菌、溶血性革兰氏阳性停乳链球菌和不溶和不溶血性革兰氏阴性的大肠杆菌共同引起。 相似文献
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中草药对奶牛隐性乳房炎的治疗效果观察 总被引:2,自引:0,他引:2
选择皖南地区某奶牛场106头奶牛进行乳房炎流行病学调查.应用SMT诊断液对奶牛奶样进行检测,发现59头奶牛具有隐性乳房炎,其发病率达55.66%.应用中草药组方研制的中药超细散剂"消炎增乳散"对奶牛隐性乳房炎进行治疗.消炎增乳散混入饲料中喂服,每天200g,3天为一个疗程.对照组不使用药物预防和治疗.结果表明中药制剂"消炎增乳散"对奶牛隐性乳房炎的治疗愈为72.2%. 相似文献
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中草药对奶牛隐性乳房炎的治疗效果观察 总被引:2,自引:0,他引:2
选择皖南地区某奶牛场106头奶牛进行乳房炎流行病学调查。应用SMT诊断液对奶牛奶样进行检测,发现59头奶牛具有隐性乳房炎,其发病率达55.66%。应用中草药组方研制的中药超细散剂“消炎增乳散”对奶牛隐性乳房炎进行治疗。消炎增乳散混入饲料中喂服,每天200g,3天为一个疗程。对照组不使用药物预防和治疗。结果表明中药制剂“消炎增乳散”对奶牛隐性乳房炎的治疗愈为72.2%。 相似文献
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壳聚糖免疫与抗菌功能及其在防治奶牛乳房炎中的应用前景(综述) 总被引:1,自引:0,他引:1
本文描述了壳聚糖的基本特性与作用,综述了壳聚糖的免疫活性及其抗菌功能,探讨了壳聚糖在防治奶牛乳房炎中的应用前景,为提高奶牛健康水平和牛场的社会经济效益提供参考资料. 相似文献
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目的探讨急性乳房炎的早期干预及护理要点。方法随机选择在我院建卡分娩的产妇80例,对其进行早期干预和护理。结果75例产妇未发生乳房炎,1周后出院;5例急性乳房炎早期患者经过精心护理恢复健康,未发现并发症和后遗症。结论通过急性乳房炎的早期干预及护理,可有效阻止乳腺炎的发生和进一步发展,提高护理质量。 相似文献
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选择遗传标记性状降低奶牛隐性乳房炎发生率的设想 总被引:2,自引:0,他引:2
设想通过后裔测定选择较低体细胞数(SCC)估计育种值的公牛,以降低奶牛隐性乳房炎的发生率;对公牛进行包括生产性能、体型、SCC等各个方面的综合、全面的评价;考虑平衡地、较充分地发挥公牛降低隐性乳房炎发生率的遗传改良作用。 相似文献
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在全群奶牛进行乳房炎和酮病检验之后,选择16例健康牛和12例隐性乳房炎牛,进行牛毛微量元素的测定。结果健康奶牛牛毛Fe、Cu、Zn、Ca、Pb、As和Se的含量分别是76.52±24.22,9.15±1.90,162.22±55.16,1563.4±520.7,0.986±1.349,0.284±0.236和0.296±0.116ug/g;而患牛分别为59.35±23.94,6.50±3.40,96.83±19.21,747.1±674.1,1.260±1.248,0.425±0.216,和0.326±0.092ug/g。发现隐性乳房炎牛毛中Zn、Ca和Cu的含量显著低于健康牛;而毛中Fe、Pb、As和Se的含量元显著差异。初步认为隐性乳房炎与牛毛中Zn、Ca和Cu的缺乏有关。 相似文献
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10种中药对奶牛乳房炎病原菌的体外抑菌试验 总被引:2,自引:0,他引:2
测定了黄芩、黄柏、黄连、大黄、金银花、秦皮、板蓝根、丹参、诃子、石榴皮对6种奶牛乳房炎病原菌的体外抑茵效果和最低抑菌浓度。结果表明,黄芩、黄柏、黄连、丹参、石榴皮对6种奶牛乳房炎病原菌均有明显的抑菌作用,其余的则差异较大;对绵阳市奶牛乳房炎的防治,首选中药为黄连,同时可选用大黄、诃子、石榴皮、黄芩、金银花组方。 相似文献
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设想通过后裔测定选择较低体细胞数 (SCC)估计育种值的公牛 ,以降低奶牛隐性乳房炎的发生率 ;对公牛进行包括生产性能、体型、SCC等各个方面的综合、全面的评价 ;考虑平衡地、较充分地发挥公牛降低隐性乳房炎发生率的遗传改良作用 相似文献
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用厌氧培养的方法从酸泡菜中分离出一菌株。经细菌形态学和生理生化特性鉴定为肠膜明串珠菌。再经进一步生理生化特性鉴定为肠膜明串珠菌葡聚糖亚种 相似文献
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采用鸡胚接种法从安徽凤阳某患病鹅群中分离到一株病毒。经HA与HI试验、血清中和接种鸡胚试验、病毒回归试验确认为鹅副粘病毒 ,并命名为WF0 0 G株。参照新城疫病毒毒力判定的标准及其方法 ,测定该分离株的鸡胚最小致死量平均死亡时间 (MDT)、1日龄鸡脑接种致病指数 (ICPI)和 6周龄鸡静脉内接种致病指数 (IVPI)分别为 4 4 8h、1 81和 2 32 ,结果表明该分离株具有与新城疫病毒 (NDV)速发型相类似的毒力 ,属强毒力毒株。 相似文献
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E. J. Dillon T. Hennessy J. Cullinan 《The Journal of Agricultural Education and Extension》2016,22(3):255-270
Purpose: To examine the role of agricultural education and extension in influencing the adoption of best practice with regard to herd-level mastitis management.Design/Methodology/Approach: Somatic cell count (SCC) is an indicator of herd health with regard to mastitis and is negatively related to productivity and profitability. Panel data regression methods are utilised here to quantify the role of agricultural education and extension in reducing cell count and in influencing farmer best practice with regard to herd health. The impact of education and extension on farmer uptake of milk recording is of particular interest. Data utilised is farm-level Farm Accountancy Data Network (FADN) data for Ireland over a five-year period (2008–2012).Findings: Farmer uptake of formal agricultural training and liaison with agricultural extension services are shown to significantly improve mastitis herd health. Collectively, education, extension and milk recording results in an overall SCC reduction of 25% for the average herd. Farmers who undertook agricultural training were ten times more likely to monitor milk quality through milk recording compared to those who had not. Additionally, those farmers in contact with an extension service and also participated in a dairy discussion group were seven times more likely to practice milk recording.Practical Implications: The importance of farmer behaviour in the optimum management of herd health has been validated, as has the role of agricultural education and extension in influencing the uptake of best practice by farmers.Originality/Value: To date little research has been conducted using nationally representative herd-level data on the role of agricultural education and extension in improving animal health best practice. 相似文献
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草甘膦降解菌C-17的分离鉴定及生物学特性 总被引:1,自引:0,他引:1
从福建三农集团污水处理池分离到一株降解草甘膦的菌株C—17,经形态与生理生化实验,C-17初步鉴定为胶红酵母属真菌。在草甘膦基础培养基上,C-17菌株对草甘膦的最高耐受浓度为6000mg/L,草甘膦浓度为3000mg/L时生长量最高。C-17菌株能以草甘膦为唯一氮、磷源,培养7d对草甘膦的降解率为83.6%,培养基中缺乏别的磷源,有利于促进C-17菌株对草甘膦的降解。 相似文献
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Xun Tan Ye-wen Jiang Yi-jun Huang Song-hua Hu 《Journal of Zhejiang University. Science. B》2009,10(4):280-284
This study was designed to investigate persistence of gentamicin residues in milk after the intramammary treatment of lactating cows for mastitis. Milk samples were collected at a 1-d interval after the last administration from 34 individual cows that had received intramammary infusions of gentamicin. The doses and treatment times evaluated in this study represented those that have been applied by veterinarians in practice. The tetrazolium chloride assay was used to determine whether there were sig-nificant residues of the antibiotic in the samples. Persistence of detectable drug residues in milk from 33 cows (28 cows, <6 infusions at≤0.7 g gentamicin; and 5 cows, 2 infusions at 0.8 g gentamicin) did not exceed 5 d; but 1 cow (5 infusions at 0.8 g gentamicin) had detectable residues in its milk for 9 d. Our results suggest that a 5-d milk withdrawal period might be insufficient to secure the clearance of the contamination of gentamicin, because treatment times and dosages contribute to the antibiotic clearance. A larger scale of samples are needed for further investigations. 相似文献
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本文分析了企业网络面临的安全威胁及网络安全隔离技术对网络安全威胁的防范作用,并在分析研究了几种常用的网络安全隔离技术之后,结合企业网络的具体应用需求,提出了3种企业网络应用环境下的网络安全隔离方案。 相似文献
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字画真伪鉴定是字画收藏和研究中的一个重要课题,民间字画真伪鉴定由于其人为性和经验性而具有一定的局限性。拉曼光谱从物质的分子振动光谱来识别和区分不同的物质结构,成为研究物质分子结构的有效手段,具有无损性、指纹性、快速性、灵敏性、简单性等特点。所以可以用于辅助鉴别字画的真伪。 相似文献
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为提高全国人民的人均奶消费量,国家把奶牛业作为重点发展产业。绵阳市的奶牛业在政府的鼓励和支持下发展迅速。文章调查分析了绵阳市奶牛业的现状和存在的问题,盲目引种、专业知识缺乏、饲养管理不规范、疾病防治技术相对滞后等严重影响奶牛业健康持续发展;借鉴国内外奶牛业的先进技术和管理经验。提出了适合绵阳市奶牛业健康发展的对策。 相似文献