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1.
将40只4周龄雄性Wistar小鼠随机分成4组.其中,对照组饲喂基础日粮,试验组分别在基础日粮中添加100 mg/kg、150 mg/kg、200 mg/kg二氢吡啶,探讨二氢吡啶对雄鼠生长性能及生殖激素分泌水平的影响.结果表明,试验组小鼠平均体增重、血清FSH、LH和T的水平均显著高于对照组. 相似文献
2.
80只6周龄的健康雄性昆明小白鼠,随机分成4组.对照组饲喂基础日粮,试验组分别在基础日粮中添加100 mg/kg、200 mg/kg和250 mg/kg的二氢吡啶.常规条件下饲养7周,探讨二氢吡啶对小鼠体重及精液品质的影响.结果表明:日粮中添加二氢吡啶,对小鼠增重有一定的促进作用(P>0.05);对小鼠精子密度和精子活率有显著提高(P<0.05);对降低死活精子数比值有一定的促进作用(P>0.05);能显著降低精子畸形率(P<0.05);对精液pH值几乎没有影响(P>0.05). 相似文献
3.
<正>1材料和方法1.1试验动物及分组选日龄相当、体重相近(60kg)的育肥猪14头,随机分为两组,对照组饲喂基础日粮,试验组在基础日粮基础上添加50mg/kg二氢吡啶进行试验。 相似文献
4.
为了研究小鼠摄入不同水平的脱氧雪腐镰刀菌烯醇(Deoxynivalenol,DON)对小鼠免疫功能的影响。将48只SPF昆明系小鼠随机分为4组,每组12只,雌雄各半。第1组为对照组,饲喂基础日粮,第2 4组为试验组,在基础日粮中分别添加DON 2、4、8 mg/kg,饲喂20 d。结果显示,8 mg/kg DON组小鼠的平均日增重、胸腺和脾脏指数、血液生理指标、细胞因子水平、免疫球蛋白水平和胸腺脾脏淋巴细胞转化率显著降低(P<0.05),且对雄性小鼠的影响更加明显。 相似文献
5.
将120只1日龄艾维茵肉仔鸡随机分为对照组、试验组1、试验组2(每组设4个重复,每个重复10只),分别饲喂添加0、50、100mg/kg二氢吡啶的玉米-豆粕型日粮6周.试验结果表明,二氢吡啶添加水平为50mg/kg和100mg/kg时均能显著提高日增重、料重比(P＜0.05).试验结束后,分别测定血清中超氧化物歧化酶(T-SOD)活性、过氧化氢酶(CAT)活性、谷胱甘肽过氧化物酶(GSH-Px)活性、丙二醛(MDA)含量和总抗氧化力(T-AOC).试验结果表明:在基础日粮中添加50 mg/kg、100 mg/kg二氢吡啶均能提高肉仔鸡的生长性能和机体抗氧化功能,以100 mg/kg添加的效果更为明显. 相似文献
6.
选用1日龄肉用雏鸡180羽,随机分为3组,每组3个重复.空白对照组饲喂基础日粮,喹乙醇对照组饲喂添加75 mg/kg喹乙醇预混剂基础日粮,试验组饲喂添加75 mg/kg的喹烯酮预混剂基础日粮,试验期35 d.结果表明,试验组肉鸡的期末平均体重、净增重和日增重均高于空白对照组和喹乙醇组,差异显著(P﹤0.05),试验组的平均采食量高于两对照组(P﹥0.05).试验组的饲料转化率较空白对照组提高3.69%(P﹤0.05),较喹乙醇对照组提高1.5% (P>0.05). 相似文献
7.
试验主要研究在保育猪基础饲粮中添加葡萄糖氧化酶/水解单宁酸对保育猪生长性能、腹泻情况的影响.选取精神活泼健康的21日龄断奶仔猪3000头,随机分为对照组(饲喂基础饲粮)、试验组一(饲喂在基础饲粮中添加300 mg/kg葡萄糖氧化酶的试验饲粮)、试验组二(饲喂在基础饲粮中添加1000 mg/kg水解单宁酸的试验饲粮),每... 相似文献
8.
试验旨在研究饲粮肌醇添加水平对肉兔血清生化指标的影响.选择30日龄体重相近的健康肉兔160只,随机分为4组,按照单因素设计开展饲养试验.对照组饲喂基础日粮,试验组在饲喂基础日粮的基础上分别添加25 mg/kg、50 mg/kg和75 mg/kg的肌醇,预饲期5 d,正饲期40 d.结果表明:饲喂添加肌醇的试验组肉兔血清... 相似文献
9.
为探究日粮中添加复合益生菌对蛋鸡生产性能及蛋品质的影响，本试验选用100羽42周龄蛋鸡，随机将它们分为4组，每组4个重复，每个重复5羽。对照组蛋鸡饲喂基础日粮，试验1组蛋鸡饲喂基础日粮+100mg/kg复合益生菌；试验2组蛋鸡饲喂基础日粮+150mg/kg复合益生菌；试验3组蛋鸡饲喂基础日粮+300 mg/kg复合益生菌。结果显示，与对照组蛋鸡相比，试验组蛋鸡产蛋率显著提高，料蛋比显著降低，此外，试验组蛋鸡所产鸡蛋的蛋壳重量、蛋壳强度、蛋壳厚度、蛋白高度及哈夫单位显著升高。试验表明，日粮中添加适量复合益生菌可提高蛋鸡生产性能，改善蛋品质。 相似文献
10.
将32日龄黄杂肉用仔鸡240只随机分成4组,对照组饲喂基础日粮,试验组是喂在基础日粮中分别添加500,400,300mg／kg,kg的富马酸稀土络合物的日粮。结果表明,添加500mg/kg富马酸稀土络合物组的效果最佳,只均增重938g,比对照组鸡(836．5g)提高12．27％,料重比(3．04：1)比对照组鸡降低13．14个百分点,料重比和经济效益都比对照组好。 相似文献
11.
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
13.
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
15.
In late November 1991, 1883 clinics in Canada were sent a questionnaire to assess the status of Dirofilaria immitis in dogs in 1991 and there was a 60.0% response. There were 344,031 dogs tested for heart-worm (HW), 627 were found infected and the prevalence of HW infection was 0.18%. There were 417 dogs with HW in Ontario, 116 in Manitoba, 38 in Quebec, 53 in British Columbia, three in Alberta, and one in Nova Scotia. In British Columbia, all of the infected dogs but one were from the Okanagan valley which, as from 1991, is a new focus of infection in Canada. Most dogs with HW had not been on preventive medication in 1990, and the prevalence among dogs tested and unprotected was 0.59%. That prevalence was considerably higher in endemic areas. Companion dogs, over three years of age and maintained primarily outdoors in rural areas, were most frequently infected. One cat was diagnosed with D. immitis and 33 dogs had Dipetalonema reconditium. 相似文献
16.
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
17.
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
18.
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
19.
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
20.
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
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