某铝厂氟污染土壤的植物修复研究     

尹国勋  魏敏  王晶  刘克武 《安徽农业科学》2011,39(12):7019-7020,7077

[目的]研究氟污染土壤的植物修复。[方法]用离子选择电极法分析某铝厂附近土壤及植物氟化物含量。[结果]该地区土壤及植物均已受到氟化物严重污染。对17个植物样品的测定表明,样品各部位的含氟量为叶〉茎〉根,样品季节含氟量为夏季〉冬/春季〉秋季。在所研究植物中,柏树富集氟最多,其次为杨树和柳树,且植物中氟化物的污染源不仅来自于土壤,也受到大气污染的影响。[结论]为植物修复氟污染土壤提供理论依据。  相似文献   

家蝇幼虫消化道的解剖和镉中毒时的症状观察   总被引：1，自引：0，他引：1  

牛长缨  雷朝亮  胡萃 《华中农业大学学报》1999,18(1):24-27

在Ｎｉｋｏｎ实体显微镜下对家蝇幼虫的消化道进行了解剖,观察到家蝇幼虫的消化道分为３个部分：前肠,中肠,后肠,其中以中肠最长,最粗,前胃变成黄褐色,中毒较深的甚至变成深褐色。中肠显著缩甜美,不再透明,且部分黄化,马氏管局部由原来的淡黄色变为深黄褐色。  相似文献   

Study on the Effects of Cytokine Level in Ducklings with Selenium Poisoning     

WU Rui LIAN Xue-zhao TANG Xiao-yan FU Yan-ling HE Chong-yi 《中国农业科学(英文版)》2007,6(3):375-380

One-day-old healthy ducklings （n = 100） were randomly allocated into two groups （n = 50, respectively） to investigate the effect of cytokines on ducklings with selenium poisoning. The ducklings in control group （Group Ⅰ） were fed with full rations containing 0.3 mg kg^-1 selenium, and the ducklings in selenium poisoning group （Group Ⅱ ） were fed with seleniumexcessive rations containing 8.0 mg kg^-1 selenium. One mL blood was collected by cardiac puncture at d 15, 30, 60, and 90 （n = 10, respectively）, serum was separated by centrifugation. Contents of cytokines were determined by the radioimmunity method （RIA）. The results showed that the contents of IL-113, IL-213 in Group Ⅱ were higher than that in control group at d 15 （P〉0.05）, but were significantly lower at d 30, 60, and 90 （P〈0.01）; the contents of IL-8β in Group II were significantly lower than that in control group （P〈0.01）; the contents of erythropoietin （EPO） and IGF-2 in Group II were significantly lower in different degree than that in control group at d 60 and 90 （P〈0.01）; the contents of granulocyte- macrophage colony stimulating factor （GM-CSF） in the two groups were lower in different degree and significantly lower at d 60 and 90 （P〈0.01）. It can be concluded that the excessive selenium could result in a decrease in immunity and a series of clinical pathology changes, such as anemia, tissue hemorrhage, and necrosis.  相似文献   

霉变酒糟中毒时实验兔的心电图变化     

耿永鑫  耿光瑞  李成喜 《河北北方学院学报(自然科学版)》2001,(2)

在临诊实践中,接触到马属动物的霉变酒糟中毒病例。为了进一步证实霉变酒糟的毒性,用家兔进行动物试验。在一定时期的饲喂中,进行了临诊和血液生化(ALT、BUN)检查、BCG描记、病理形态学检查。同时,对霉变酒糟做了真菌分离鉴定和培养物产毒测定。着重叙述了中毒家兔的BCG变化。  相似文献   

D型肉毒杀鼠素防治高原鼠兔灭效试验   总被引：3，自引：0，他引：3  

景增春  王启基  史惠兰  马玉寿  施建军 《草业科学》2006,23(3):89-91

针对江河源退化草地治理与示范项目要求,在果洛州玛沁县大武乡格多牧委会人工和半人工草场上,使用D型肉毒杀鼠素对高原鼠兔Ochotona curzoniae进行现场药效试验和大面积灭鼠。结果表明,0.1%和0.2%D型肉毒杀鼠素毒饵对鼠兔具有良好的灭杀效果,且不污染环境,无二次中毒,对保护鼠类天敌,维持生态平衡,控制害鼠种群数量回升,减少扩散,使治理后的草场植被再次免遭破坏等方面均具良好作用。  相似文献   

A neurological locomotor disorder in sheep grazing Stachys arvensis     

Philbey AW  Hawker AM  Evers JV 《Australian veterinary journal》2001,79(6):427-430

OBJECTIVE: To describe the clinical signs and pathology of a neurological locomotor disorder in sheep associated with ingestion of Stachys arvensis. DESIGN: Field observations and laboratory examinations. PROCEDURE: Clinical and pathological examinations were performed on sheep with suspected S arvensis intoxication. FIELD OBSERVATIONS: Merino sheep in a flock on the southwestern slopes of New South Wales developed a neurological disorder after grazing S arvensis. Affected animals had pelvic limb paresis and a proprioceptive deficit. When forced to exercise they stumbled and collapsed. Recovery following removal from the plant was slow. Many deaths were associated with the outbreak. RESULTS: Affected sheep developed a mild degenerative myelopathy and peripheral neuropathy. Deficiencies of vitamins A and E were also observed in the affected flock. CONCLUSION: Grazing S arvensis is sometimes associated with a neurological locomotor disorder in sheep.  相似文献   

Intramuscular Kinetics and Dosage Regimens for Pralidoxime in Buffalo Calves (Bubalus bubalis)     

Srivastava  A.K.  Malik  J.K. 《Veterinary research communications》2001,25(4):301-309

The plasma levels, disposition kinetics and a dosage regimen for pralidoxime (2-PAM) were investigated in male buffalo calves following single intramuscular administration (15 or 30 mg/kg). The effects of 2-PAM on various blood enzymes were also determined. The absorption half-life, elimination half-life, apparent volume of distribution and total body clearance of 2-PAM were 1.08±0.19 h, 3.14–3.19 h, 0.83–1.01 L/kg and 184.9–252.1 ml/(kg h), respectively. At doses of 15 and 30 mg/kg body weight, a plasma concentration 4 g/ml was maintained for up to 4 and 6 h, respectively. Pralidoxime significantly lowered the serum level of transferases, phosphatases and lactate dehydrogenase but did not influence the acetylcholinesterase and carboxylesterase enzymes. The most appropriate dosage regimen for 2-PAM in the treatment of organophosphate toxicity in buffaloes would be 25 mg/kg followed by 22 mg/kg at 8 h intervals.  相似文献   

Suspected wood poisoning caused by Simarouba amara (marupá/caixeta) shavings in two dogs with erosive stomatitis and dermatitis     

Declercq J 《Veterinary dermatology》2004,15(3):188-193

Two male Labrador retrievers developed bleeding erosions/ulcerations involving the oral mucosa, mucocutaneous junctions of the lips, nose, prepuce and anus, ulcerated nodules on the chin, and crusting lesions on the elbows, hocks and scrotum. One of the dogs was anorexic and depressed, had haematological abnormalities consistent with damage to the liver and signs of neurological disease. As these dogs had recently been exposed to bedding containing Simarouba amara shavings and because of the striking similarities of clinical signs to those described for horses, a probable diagnosis of wood poisoning was made. This assumption was supported by the clinical course as healing of skin lesions occurred when the dogs were no longer exposed to the bedding.  相似文献   

曼陀罗杀鼠活性研究初报   总被引：17，自引：3，他引：14  

张宏利  韩崇选  杨学军  王明春  杨清娥 《西北林学院学报》2003,18(4):100-103

曼陀罗杀鼠活性研究表明,在饵料中曼陀罗含量为20时,曼陀罗种子、茎对小白鼠的毒杀率均为100,叶为88.9,果壳为80;在含量为15时,毒杀率分别为90、70、50和80;在含量为10时,毒杀率分别为70、66.7、0和20;以家鸡进行安全性试验,无二次中毒现象.  相似文献   

蟛蜞菊抽提物对花生蚜忌避及毒杀作用   总被引：4，自引：0，他引：4  

陈泽坦  符悦冠  骆焱平 《热带作物学报》2003,24(3):51-53

用不同浓度蟛蜞菊甲醇抽提物对花生蚜选择性和非选择性忌避作用进行测定,并采用喷雾法进行蟛蜞菊抽提物对花生蚜的毒杀试验。结果表明:在选择性忌避试验中,蟛蜞菊抽提物对花生蚜具明显的忌避作用,最高忌避率达90.1％,而在非选择性忌避试验中忌避作用中等;2.5 g/L浓度蟛蜞菊抽提物喷雾处理花生蚜,第5天死亡率达93.7％,第1,3,5天致死中质量浓度(LC50)分别为1.4,1.2,0.9 g/L。蟛蜞菊抽提物有开发利用的价值。  相似文献