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1.
为了解山东地区饲料原料及配合饲料中玉米赤霉烯酮(ZEN)的污染情况,试验采用高效液相色谱串联质谱(HPLC-MS/MS)法对山东省饲料原料及配合饲料中ZEN含量进行检测。结果表明:3 402份被检测样品中,ZEA的检出率为96.44%,超标率为7.94%。在饲料原料中,玉米及其副产物污染严重,超标率为6.40%~91.76%;麦类、高粱、饼粕和糟糠类污染较轻,超标率为0.00%;在配合饲料中,牛配合饲料污染较为严重,超标率为62.50%;猪、禽配合饲料污染较轻,超标率分别为4.24%、6.30%。说明山东省配合饲料及饲料原料的ZEN污染比较普遍,应注意其对玉米及其副产物和牛配和饲料的污染。 相似文献
2.
玉米赤霉烯酮(Zearalenone,简称ZEN)亦称F-2毒素,其来源于赤霉病的玉米。ZEN产毒菌有三线镰刀菌()、禾谷镰刀菌()等。玉米赤霉烯酮具有雌激素作用,可致使畜禽急性、慢性中毒,造成畜禽繁殖机能异常,严重者引起死亡,给畜牧业带来严重的经济损失。本文阐述当前饲料中玉米赤霉烯酮的检测方法。 相似文献
3.
饲料中玉米赤霉烯酮(ZEN毒素)具有类雌激素的作用,主要引起畜禽出现一系列繁殖功能性问题,导致繁殖性能下降,造成生长发育缓慢并降低饲料报酬率,给养殖场(户)造成严重的经济损失。本文介绍了几种玉米赤霉烯酮的检测技术,并结合云南省曲靖市兽药饲料监察所对玉米赤霉烯酮所做的专项监督检测,提出了针对性防治措施。 相似文献
4.
应用HPLC-MS/MS对山东地区生猪配合饲料及饲料原料中黄曲霉毒素B1(AFB1)、呕吐毒素(DON)和玉米赤霉烯酮(ZEN)的含量进行检测。结果发现:825份样品中AFB1、DON和ZEN检出率分别是46. 91%、76. 85%和82. 55%,超标率分别为8. 73%、2. 55%和3. 88%,平均含量分别是17. 33、589. 65和135. 92μg/kg。说明山东地区生猪饲料与原料中霉菌毒素污染现象普遍,超标较严重,DON和ZEN污染率高,AFB1超标严重。 相似文献
5.
玉米赤霉烯酮(Zearalenone,ZEN)和烟曲霉毒素的各种生物标记物可用来证明两种酶制剂降解玉米赤霉烯酮和烟曲霉毒素的体内功效和两种木质纤维素吸附剂无法吸附猪胃肠道中的玉米赤霉烯酮。 相似文献
6.
饲料样品经乙腈-水(8+2)提取,提取液用磷酸盐缓冲溶液稀释,经免疫亲和柱净化后,净化提取液用反相高效液相色谱荧光检测器测定,可以准确检测饲料中玉米赤霉烯酮含量。IAC-HPLC荧光检测法可以有效地将玉米赤霉烯酮与其类似物区别开。利用配合饲料、预混料、鱼粉、豆粕、浓缩饲料、玉米进行玉米赤霉烯酮准确性实验,回收率为90.1%～118%。利用鱼粉、预混料、鸡配合饲料、玉米进行方法精密度试验,相对标准偏差均在5%以内。因此,本方法中建立的免疫亲和柱净化、高效液相色谱荧光检测法具有良好的准确性、稳定性和特异性。 相似文献
7.
应用抗玉米赤霉烯酮单克隆抗体(ZEN-McAb)建立间接竞争ELISA,用以检测玉米中的玉米赤霉烯酮(ZEN)。检测限为1ng/ml,检测范围为1～20ng/ml。在提取玉米赤霉烯酮的过程中,提取液中的甲醇含量对检验结果的影响很大。当提取液中甲醇含量为60%时,加标回收率最理想,平均回收率为92.4%。 相似文献
8.
为了研究玉米赤霉烯酮的间接竞争ELISA检测方法,试验采用牛血清白蛋白与玉米赤霉烯酮的耦联物(ZEN-BSA)做包被抗原,标准玉米赤霉烯酮(ZEN)做竞争抗原,以制备的可稳定分泌抗ZEN的单克隆抗体为基础,初步建立了ZEN间接竞争ELISA检测方法。结果表明:间接竞争ELISA检测方法线性范围为0.363 2～78.985 2μg/L,最低检测限为0.231 9μg/L;曲线回归方程为y=68.711-25.666x,其中R2=0.987 1,批内平均变异系数为3.10%,批间平均变异系数为6.26%,与相似毒素的交叉反应率均小于0.01%。说明建立的检测方法可以用于ZEN的检测。 相似文献
9.
利用酶联免疫吸附法测定了采集于山东省规模化羊场常用羊饲料中黄曲霉毒素B1(AFB1)、玉米赤霉烯酮(ZEN)、呕吐毒素(DON)、赭曲霉毒素A(OTA)4种霉菌毒素含量。结果表明,被检样品中4种毒素污染较为严重的为呕吐毒素,其中玉米及副产品、玉米秸、米糠、酒糟、豆饼、豆渣中含量较高,其次为玉米赤霉烯酮,其中玉米秸、苜蓿、混合饲料和全价料中含量较高。赭曲霉毒素A主要污染棉粕,黄曲霉毒素B1污染较轻。 相似文献
10.
试验旨在研究家禽饲料中的主要霉菌毒素与家禽肉、内脏和鸡蛋霉菌毒素含量的相关性。本试验对山东省各地市分别取有代表性的16个肉鸡养殖场(每场采集饲料1份和3只肉鸡的胸肉、腿肉、心脏、肝脏)和14个蛋鸡养殖场(每场采集4枚鸡蛋和1份饲料)进行霉菌毒素检测。结果表明：肉鸡配合饲料中黄曲霉毒素B1(AFB1)、玉米赤酶烯酮(ZEN)和脱氧血腐镰刀菌烯醇(DON)的检出率分别为93.75%、100%和87.5%,1份AFB1超标饲料中含量为15.02μg/kg时,肉鸡肝脏中AFB1毒素残留量仅为0.012μg/kg。肉鸡饲料中ZEN为502、558、672.5μg/kg时,肝脏ZEN含量分别为0.25、0.354、0.405μg/kg,在其他组织中未发现ZEN毒素残留。肉鸡饲料AFB1、ZEN和DON不超标,肌肉和脏器中没有检出AFB1、ZEN和DON。蛋鸡配合饲料AFB1、ZEN和DON的检出率分别为100%、100%和93.75%,且含量均低于限量标准,3种毒素在鸡蛋中均未检出。饲料中AFB1、ZEN和DON含量低于限量标准时,在肌肉、脏器和鸡蛋中未能检出。饲料中AFB1、ZEN含量高于限量标... 相似文献
11.
In late December 1985, 1485 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1985 and 44% of them responded. Veterinarians reported that 137,300 dogs were blood-tested to check for microfilariae and 1210 dogs were found with heartworm. Another 36 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number diagnosed in 1985 as 1247 (0.91%). Heartworm was reported from all provinces except Prince Edward Island, Newfoundland and Saskatchewan but most (1126) of the cases were in Ontario. Southwestern Ontario continued to be the primary focus of the infection in Canada. From Quebec, 91 cases were reported mostly from and around Montreal. From Manitoba, 19 cases were reported from Winnipeg and surrounding areas. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 28% of the cases were observed with clinical signs of heartworm disease and 78% had a history of not having left Canada. 相似文献
12.
In late November 1988, 1581 small and mixed animal clinics and institutional veterinarians across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1988, and 46% of them responded. Veterinarians reported that 181,577 dogs were blood-tested for heartworm disease and 367 dogs were found with D. immitis microfilariae. Another 60 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number of cases diagnosed in 1988 as 441 (0.24%). 相似文献
13.
In late December 1984, 1853 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1984 and 35% of them responded. Veterinarians reported that 97,794 dogs were blood-tested to check for microfilariae and 1417 dogs (1.45% of those tested) were found with heartworm. Another 34 dogs were amicrofilaremic, but were diagnosed as having heartworm disease, to give the total number diagnosed in 1984 as 1451 (1.48%). Heartworm was reported from all provinces except Prince Edward Island and Newfoundland but most (1310) of the cases were in Ontario. In Quebec, 126 cases were reported mostly from west of Montreal. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 27% of the cases were observed with clinical signs of heartworm disease and 72% had a history of not having left Canada. Southwestern Ontario continued to be the primary focus of the infection. 相似文献
15.
In late November 1989, 1732 clinics and institutional veterinarians were sent a questionnaire to assess the status of Dirofilaria immitis, and 51.7% responded. Of 247,716 dogs tested, 394 had D. immitis microfilariae and 51 were amicrofilaremic for a total of 445 cases and heartworm prevalence of 0.17%. Most (408) of these dogs had no preventive medication and the prevalence among dogs tested and unprotected was 1.01%. That prevalence was considerably higher in endemic areas. Thirty-seven dogs with heartworm had preventive medication. Heartworm was most frequent in companion dogs over three years of age maintained outdoors in rural areas. About 75% of the cases had never left Canada, 26% had clinical signs and 125 were not treated. Heartworm was reported from British Columbia, Manitoba, Ontario, Quebec, Nova Scotia and Newfoundland, but 383 cases were in Ontario. South-western Ontario was the primary focus of infection. There were 33 cases in Quebec and 24 in Manitoba, mainly found in and around Metropolitan Montreal and Winnipeg respectively. 相似文献
16.
In late November 1987, 1246 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1987, and 50% of them responded. Veterinarians reported that 165,428 dogs were blood tested for heartworm disease and 511 dogs were found with D. immitis microfilariae. Another 78 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number of cases diagnosed in 1987 as 589 (0.35%). 相似文献
17.
In late December 1986, 1224 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1986; 46% of them responded. Veterinarians reported that 150,989 dogs were blood-tested for microfilariae and 869 dogs were found with heartworm. Another 65 dogs were amicrofilaremic but diagnosed with heartworm disease and one was found with heartworm at necropsy to give the total number diagnosed in 1986 as 935 (0.62%). Heartworm was reported from Manitoba, New Brunswick, Ontario and Quebec, but most (810) of the cases were from Ontario. South-western Ontario continued to be the primary focus of the infection in Canada. There were 103 cases reported from Quebec, mostly from and around Montreal, and 21 cases from Manitoba, from Winnipeg and surrounding areas. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 33% of the cases were observed with clinical signs of heartworm disease and 81% had a history of not having left Canada. 相似文献
19.
In late December 1983, 2 800 veterinarians across Canada were sent a questionnaire in order to assess the status of heartworm disease in Canada in 1983 and 26% of them responded. Veterinarians reported that 59 504 dogs were blood-tested to check for microfilariae and 771 dogs (1.30% of those tested) were found with Dirofilaria immitis. Heartworm disease was diagnosed in all provinces except New Brunswick and Newfoundland but most (733) of the cases were in Ontario. Heartworm disease was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 31% of the cases were observed with clinical signs of heartworm disease and 64% had a history of not having left Canada. Southwestern Ontario continues to be the focus of the infection and most of the dogs there had not left the province previously. 相似文献
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