共查询到20条相似文献，搜索用时 828 毫秒
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沸石缓解低剂量铅污染对蛋鸡的毒性效果研究 总被引：1，自引：0，他引：1
选取1 584羽50周龄伊莎褐商品蛋鸡,随机分成4组,分别饲喂基础日粮及其基础上添加10 mg/kg铅、3%沸石、10 mg/kg铅+3%沸石的试验日粮,研究低剂量铅污染及沸石对蛋鸡生产性能及血清指标的影响.结果表明,试验各组间产蛋率、平均蛋重、破蛋率和死淘率均无显著差异(P>0.05),但添加沸石可降低死淘率.与对照组相比,10 mg/kg铅处理组蛋鸡第8周血清ALP显著降低(P<0.05),3%沸石组蛋鸡第2周血清TP、ALB、TC、TRIG都显著降低(P<0.05),其它各阶段铅污染及添加沸石对血清指标均无显著影响(P>0.05).本试验条件下10mg/kg的铅污染对蛋鸡生产性能及血清指标无显著影响,沸石缓解铅对蛋鸡的毒性效果也未体现出来. 相似文献
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食品安全与人们生活息息相关.食用蚕桑产品种类繁多,桑叶、桑椹以及家蚕的幼虫、蛹蛾等都可直接食用或加工为食品食用.但除蚕蛹油外的家蚕加工食品,目前尚未列入国家食品安全标准的食品类别中.根据国家相继出台的强制性食品通用标准GB 2760-2011《食品添加剂使用标准》、GB 2762-2012《食品中污染物限量》、GB2763-2014《食品中农药最大残留限量》、GB 14880-2012《食品营养强化剂使用标准》和GB 29921-2013《食品中致病菌限量》等,参照该系列标准中相关食品的要求,我们对食用桑叶、桑叶茶、桑叶粉、鲜桑椹、桑椹干、桑果酱、桑果汁、桑椹醋、桑椹酒、桑枝食用菌、蚕蛹油等食品的添加剂使用标准、食品中污染物限量、食品中农药最大残留限量、食品营养强化剂使用标准和食品中致病菌限量等进行了对接解读,为食用蚕桑产品的生产、消费、管理者提供技术指导与帮助,共同促进蚕桑产业发展和维护产品质量安全. 相似文献
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Kruger K Saulez MN Neser JA Solberg K 《Journal of the South African Veterinary Association》2008,79(1):50-53
Lead (Pb) intoxication in horses is usually a chronic phenomenon with clinical signs associated with central nervous dysfunction. This report gives details of a case of acute Pb intoxication in a 9-year-old American Saddlebred mare with severe, progressive and ultimately fatal neurological deterioration. During the 4 days of hospitalisation, clinical signs progressed from intermittent headshaking and depression to severe, continuous, uncontrollable manic behaviour. At autopsy, three grey-coloured, hard metal particles were present in the gastrointestinal tract and subsequently found to contain 2614 ppm Pb. Lead concentrations in the brain, liver, stomach and kidney were 29, 4, 6 and 2 ppm wet weight, respectively. 相似文献
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Platt SR Helmick KE Graham J Bennett RA Phillips L Chrisman CL Ginn PE 《Journal of the American Veterinary Medical Association》1999,214(8):1218-20, 1200
Clinical, electromyographic, and pathologic findings characteristic of lead toxicosis were detected in a turkey vulture (Cathartes aura). The bird had generalized lower motor neuron dysfunction that progressed over 5 days. Electromyography revealed diffuse denervation potentials and a presumed decrement in the sciatic-tibial nerve conduction velocity. Histologic examination of peripheral nerves obtained at necropsy revealed changes that could be compatible with lead-induced neuropathy. Lead toxicosis was confirmed by determination of blood lead concentrations. Lead toxicosis causing neurologic disorders in birds has been described. However, this report emphasizes the effects of lead on the peripheral nervous system and demonstrates the use of electromyography for diagnosis of peripheral neuropathy in birds. 相似文献
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Lead poisoning in a dog--a case report. 总被引：1，自引：0，他引：1
E Srebocan J Pompe-Gotal I Harapin D Capak V Butkovi? D Stanin 《Berliner und Münchener tier?rztliche Wochenschrift》2001,114(5-6):216-217
Lead poisoning in a bitch is described. Clinical signs, hematological and biochemical changes, X-ray, as well as presence of lead in stomach and blood confirmed the diagnosis. 相似文献
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铅对骨代谢生化指标影响的研究进展 《畜牧与饲料科学》2021,42(5):45-50
铅是一种重金属污染物,对人和动物健康损害极大。众多研究发现铅毒性作用的重要靶器官是骨骼,即铅进入机体后会蓄积在骨骼内,极易导致骨质疏松症。在临床上,铅对骨骼的危害主要通过一些骨代谢生化指标进行评估,如PINP、OPG、β-CTX、CT等。近年来多项研究发现骨代谢生化指标可以反映骨代谢状态以及骨转换率,这对于骨质疏松症的鉴别诊断具有重要意义。综述了铅对骨代谢生化指标影响的研究进展,以期为探究铅对骨代谢影响的分子机制提供参考。 相似文献
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Katavolos P Staempfli S Sears W Gancz AY Smith DA Bienzle D 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2007,36(4):341-347
BACKGROUND: Lead is a persistent contaminant in the environment, and waterfowl are susceptible to lead toxicity from ingestion of lead pellets and fishing weights. Lead affects numerous physiologic processes through inhibition of enzyme activity and protein function, but its effects on commonly assessed avian blood values are incompletely understood. OBJECTIVES: Our aim was to evaluate hematologic and biochemical changes associated with blood lead concentrations in trumpeter swans and Canada geese. METHODS: Data for CBCs, plasma biochemical profiles (total protein, albumin, glucose, cholesterol, total bilirubin, calcium, phosphorus, gamma-glutamyltransferase [GGT], aspartate aminotransferase, lactate dehydrogenase, glutamate dehydrogenase, creatine kinase, amylase, and lipase), and whole blood lead concentrations were retrospectively analyzed for 69 trumpeter swans and 52 Canada geese. Laboratory data obtained prospectively from an additional 20 trumpeter swans also were included. RBC morphology was semiquantitated in blood smears from 70 of the birds. Data were analyzed initially by ANOVA and covariance. A statistical model then was constructed to determine the relationship between each parameter and lead concentration. RESULTS: In both avian species, PCV, hemoglobin concentration, and MCHC decreased significantly (P < .05) with increasing blood lead concentration. Uric acid concentration and GGT activity were increased in trumpeter swans and phosphorus concentration was decreased in Canada geese in association with high blood lead concentration (P < .05). CONCLUSIONS: Lead toxicosis induced significant changes in the values of commonly measured hematologic parameters in waterfowl. These changes may be useful indicators of severe lead intoxication during routine laboratory assessment. Changes in clinical chemistry values, although statistically significant, were too inconsistent to serve as indicators of lead toxicosis. 相似文献
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J C Baker 《Veterinary Clinics of North America: Food Animal Practice》1987,3(1):137-147
Lead poisoning is a frequent cause of poisoning in domestic animals. Signs of encephalopathy and gastroenteritis are commonly observed in cattle following lead poisoning. This article discusses the etiology, epidemiology, pathogenesis, clinical signs, diagnosis, postmortem findings, and treatment of lead poisoning in cattle. 相似文献
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铅（plumbum,Pb）在自然界中广泛分布,铅及其多数化合物是一种不可降解的环境污染物,可通过废水、废气、废渣大量流入环境,产生环境污染及健康危害。随着都市化、现代化进程的加快,铅已经成为生活中最常见的化学污染物。近年来,铅与骨骼方面的疾病越来越受到人们的关注,铅对骨骼损伤机理的相关研究也不断深入。资料表明,铅对骨骼的毒性可能是通过损伤内分泌器官而间接影响激素合成干扰钙磷代谢和影响骨矿物代谢,阻碍骨骼发育或通过毒化细胞和影响钙信使系统活性部位中的钙而直接干扰骨细胞的功能。文章就铅对钙磷代谢、碱性磷酸酶和骨钙素及成骨细胞凋亡相关基因表达的影响进行了综述,为生产实践和研究提供参考资料。 相似文献
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M Garner 《Journal of the American Veterinary Medical Association》1991,199(8):1069-1070
Lead toxicosis was diagnosed in a 3-week-old male goshawk after evaluation of the history, clinical signs, radiographic lesions, and laboratory values. Treatment with Ca-EDTA and supportive measures was successful. The presumed source of lead was from birds that had been shot with a pellet gun and used for food. 相似文献
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Yonge KS Morden BB 《The Canadian veterinary journal. La revue veterinaire canadienne》1989,30(1):42-45
Lead poisoning was the most common toxicosis diagnosed in cattle by Alberta Animal Health Laboratories between 1964 and 1985 (n = 738 cases, = 33.5 cases per year). Seasonal variation in incidence was evident, and occurrence was frequently associated with change in housing or pasture. Discarded batteries or used crankcase oil were implicated in more than 80% of cases for which the source of lead was determined.
Pulmonary congestion, marked congestion and hemorrhage of thymus and heart, and presence of oil or lead particles in the ingesta were the most common postmortem findings. Eighty-six percent of cases were confirmed by elevated lead levels in tissues.
Lead poisoning represents a significant, unnecessary loss to producers. Increased producer awareness and improved waste management on farms could significantly reduce the incidence of lead poisoning in cattle.
相似文献20.
《The Veterinary record》2010,167(25):957-960
Parasitic bronchitis (lungworm, husk) in cattle Lead poisoning in cattle associated with bonfire ash Deaths of ewes associated with faulty administration of boluses Streptococcus suis associated with respiratory and nervous disease in pigs Blackhead and mycoplasmosis causing losses in turkeys These are among matters discussed in the Veterinary Laboratories Agency's (VLA's) disease surveillance report for October. 相似文献