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氟苯尼考对蛋鸡大肠杆菌病的疗效试验 总被引：1，自引：0，他引：1
氟苯尼考又名氟甲砜霉素,是上世纪80年代后期研制成功的、一种新的兽医专用氯霉素类广谱抗菌药,其抗菌活性高于氯霉素及甲砜霉素,尤其对一些耐氯霉素及甲砜霉素的细菌仍表现出较高 相似文献
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氟苯尼考的理化性质及毒性 总被引：1，自引：0，他引：1
氟苯尼考为甲砜霉素的单氟衍生物,是由美国某公司于20世纪80年代末研制开发的新型动物专用氯霉素类广谱抗生素。氟苯尼考与同类的氯霉素和甲砜霉素相比,氟苯尼考具有抗菌活性高、无潜在致再生障碍性贫血等优点,已成为氯霉素禁用后的主要替代药物,在兽医临床上发挥着重要作用。 相似文献
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氟苯尼考是由美国Schering-Plough公司Nagab-husban等在70年代末为寻求更好的氯霉素类衍生物中研制开发的产品，化学名称：D（＋）-苏-1-对甲砜基苯基-2-二氯乙酰氨基-3-氟丙醇，对敏感菌的抗菌活性与氯霉素和甲砜霉素相似，但对耐氯霉素及甲砜霉素的细菌仍敏感，如大肠杆菌、克雷白氏杆菌、溶血性巴氏杆菌、金黄色葡萄球菌、胸膜肺炎放线杆菌及伤寒沙门氏菌等。氟苯尼考于1996年通过美国FDA注册登记，商品名分别为Florocol和Nuflox。 相似文献
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氟苯尼考粉对鸡金黄色葡萄球菌病的疗效试验 总被引：5，自引：0，他引：5
氟苯尼考(Florphenicol，又名氟甲砜霉素，是一种新型兽医专用氯霉素类抗菌药物，其抗菌谱广，吸收好，安全，对敏感菌所致的禽畜细菌性疾病治疗效果显著。氟苯尼考对耐氯霉素及甲砜霉素的细菌仍然敏感，如金黄色葡萄球菌，大肠埃希氏菌、多杀性巴氏杆菌、奇异变形杆菌、胸膜肺炎放线杆菌与伤寒沙门氏菌等，而且氟苯尼考无氯霉素的再生障碍性贫血的不良反应， 相似文献
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PVPK氟苯尼考固体分散体的制备及体外溶出速率的研究 总被引：6，自引：0，他引：6
氟苯尼考(氟甲砜霉素，Florfenicol)是美国先灵葆雅公司研制的兽用广谱抗菌药物，为人工合成的甲砜霉素单氟衍生物。氟苯尼考广谱抗菌，对猪胸膜肺炎放线杆菌、多杀性巴氏杆菌、支气管败血波氏杆菌、链球菌、副猪嗜血杆菌、沙门氏菌、大肠杆菌等革兰阳性和阴性细菌及支原体均有强大的杀伤力。其抗菌活性明显优于氯霉素和甲砜霉素(MIC约为10倍)，目前该药在兽医临床上应用非常广泛，但该药的可溶性剂型目前还没有质量标准， 相似文献
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Breed differences for weight (CW), height (CH), and condition score (CS) were estimated from records (n = 12,188) of 2- to 6-yr-old cows (n = 744) from Cycle IV of the U.S. Meat Animal Research Center's Germplasm Evaluation (GPE) Program. Cows were produced from mating Angus and Hereford dams to Angus, Hereford, Charolais, Shorthorn, Galloway, Longhorn, Nellore, Piedmontese, and Salers sires. Samples of Angus and Hereford sires were 1) reference sires born from 1962 through 1970 and 2) 1980s sires born in 1980 through 1987. The mixed model included cow age, season of measurement and their interactions, year of birth, pregnancy-lactation code (PL), and breedgroup as fixed effects for CW and CS. Analyses of weight adjusted for condition score included CS as a linear covariate. The model for CH excluded PL. Random effects were additive genetic and permanent environmental effects associated with the cow. Differences among breed groups were significant (P < 0.05) for all traits and were maintained through maturity with few interchanges in ranking. The order of F1 cows for weight was as follows: Charolais (506 to 635 kg for different ages), Shorthorn and Salers, reciprocal Hereford-Angus (HA) with 1980s sires, Nellore, HA with reference sires, Galloway, Piedmontese, and Longhorn (412 to 525 kg for different ages). Order for height was as follows: Nellore (136 to 140 cm), Charolais, Shorthorn, Salers, HA with 1980s sires, Piedmontese, Longhorn, Galloway and HA with reference sires (126 to 128 cm). Hereford and Angus cows with reference sires were generally lighter than those with 1980s sires. In general, breed differences for height followed those for weight except that F1 Nellore cows were tallest, which may in part be due to Bos taurus-Bos indicus heterosis for size. 相似文献
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In experiment 1, 6 pregnant mares received a concentrate that contained a trace mineral premix that provided 14.3 mg Cu, 40 mg Zn, 28 mg Fe, 28 mg Mn, 0.08 mg Co, 0.16 mg I, and 0.16 mg Se/kg concentrate (group A). Seven mares received the same concentrate plus 502 mg Zn and 127 mg Cu once daily (group B). No differences (P > .05) in foal growth data, or Cu, Zn, and Fe concentrations of mare milk, mare serum, or foal serum were observed. In experiment 2, 6 pregnant mares received the same concentrate as group A (group C), and 8 mares received the same concentrate fortified with 4× the trace mineral premix (group D). Group C mares had higher serum Zn concentration at 1 day (P < 0.01) and 56 days (P < 0.04). Group C mares had higher milk Fe concentration at 28 days (P < .01), and group D mares had higher milk Cu concentration at 56 days (P < .01). Group C foals had higher serum Cu concentration at 14 days (P < .03). The results from this study provide no evidence to indicate that supplementing late gestating and lactating mares with higher dietary trace mineral levels than those recommended currently by NRC has any influence on foal growth and development, or on the Cu, Zn, and Fe concentrations of the mare milk, mare serum, or foal serum. 相似文献
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Nadine Pa?lack Barbara Mainzer Monika Lahrssen-Wiederholt Helmut Schafft Richard Palavinskas Angele Breithaupt Jürgen Zentek 《Journal of veterinary science (Suw?n-si, Korea)》2015,16(1):57-66
This study was conducted to measure the concentrations of strontium (Sr), barium (Ba), cadmium (Cd), copper (Cu), zinc (Zn), manganese (Mn), chromium (Cr), antimony (Sb), selenium (Se), and lead (Pb) in canine liver, renal cortex, and renal medulla, and the association of these concentrations with age, gender, and occurrence of chronic kidney disease (CKD). Tissues from 50 dogs were analyzed using inductively coupled plasma mass spectrometry. Cu, Zn, and Mn levels were highest in the liver followed by the renal cortex and renal medulla. The highest Sr, Cd, and Se concentrations were measured in the renal cortex while lower levels were found in the renal medulla and liver. Female dogs had higher tissue concentrations of Sr (liver and renal medulla), Cd (liver), Zn (liver and renal cortex), Cr (liver, renal cortex, and renal medulla), and Pb (liver) than male animals. Except for Mn and Sb, age-dependent variations were observed for all element concentrations in the canine tissues. Hepatic Cd and Cr concentrations were higher in dogs with CKD. In conclusion, the present results provide new knowledge about the storage of specific elements in canine liver and kidneys, and can be considered important reference data for diagnostic methods and further investigations. 相似文献
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《饲料工业》2019,(18):54-58
应用电感耦合等离子-质谱技术(ICP-MS),建立饲料中钠、镁、铬、锰、铁、铜、锌、砷、硒、镉和铅等元素的测定方法。对饲料样品的前处理方法、仪器工作参数和11种元素标准曲线进行优化;并以加标回收、分析方法比对和重复测试说明方法的准确性和精密性。方法在0～1 000 ng/ml范围内线性良好,仪器检出限为0.557 7～5.072 ng/ml,具有良好的精密度,其回收率在88.1%～104.4%之间,相对标准偏差小于5.0%。同时与原子吸收和原子荧光方法进行比对,测定结果相近。所建立的方法简单、快速,可替代原子吸收和原子荧光方法测定饲料中的11种金属元素,为饲料的质量控制提供理想的元素分析方法。 相似文献
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K Reifenberg M Stahl U L?sch 《Zentralblatt für Veterin?rmedizin. Reihe B. Journal of veterinary medicine. Series B》1989,36(3):191-198
A simple two step procedure for the isolation of caprine, ovine, bovine, equine, canine, porcine and human peripheral blood granulocytes is described. After enrichment of granulocytes by centrifugation, contaminating erythrocytes are lysed hypotonically. Recovery, purity, and viability of the granulocyte suspensions are determined. FACScan analysis of the cell suspensions measuring cellular size by forward and sideward light scatter is compared with the corresponding analysis of whole blood leukocytes. Constituencies of the isolated cell suspensions and loss of granulocyte subpopulations through isolation procedure is discussed with regard to granulocyte function assays. 相似文献
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《The Journal of small animal practice》1975,16(1-12):143-154
Circular excised skin wounds in the thoracic and metatarsal regions of the dog were studied. A similar sequence of events took place in the two regions although differences did occur due to the different reactions of the tissues which surrounded the wounds. None of the wound cavities became filled with exudate during the early stages of healing. In the thoracic wounds the cavities were largely filled by the swelling and inward movement of adipose tissue. Epithelium first grew on the wound surface in the sector of the wound that was situated in the direction of hair flow. The average time to complete epithelization was similar in both sets of wounds. A zone of alopecia developed around the wounds. 相似文献
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