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1.
维生素C对笼养蛋雏鸭的生产性能和机体抗氧化能力的影响 总被引：1，自引：1，他引：0
本文旨在研究玉米-豆粕型日粮添加不同水平维生素C(VC)对笼养蛋鸭育雏期(1～28日龄)的生产性能和抗氧化能力的影响.试验采用单因素随机分组设计的方法,选用1日龄平均体重相近的金定蛋雏鸭288只,随机分为6组(各处理日粮中分别添加VC 0、150、300、400、800、1 400 mg/kg),每组6个重复,每个重复8只鸭,结果表明:①在笼养蛋鸭育雏期添加150～1 400 mg/kg VC能显著提高日增重、饲料效率和抗氧化能力,显著降低丙二醛(MDA)的浓度(P<0.05).②5日龄,日粮添加800 mg/kg VC时血清和肝脏中超氧化物岐化酶(SOD)、过氧化氢酶(CAT),总抗氧化能力(T-AOC)的活性最高;28日龄,日粮添加300～400 mg/kg VC时血清和肝脏中SOD、CAT和T-AOC活力较高;28日龄血清和肝脏抗氧化指标高于5日龄.③大剂量的VC对蛋鸭的生产性能和机体的抗氧化指标都有降低的趋势.因此在本试验条件下得出:笼养蛋雏鸭日粮中适当添加VC可提高生产性能和机体抗氧化能力,1～5日龄日粮添加VC 800 mg/kg,6～28日龄添加VC 300～400 mg/kg为适宜. 相似文献
2.
维生素B2对笼养蛋雏鸭生长性能、内分泌及抗氧化能力的影响 总被引：1，自引：0，他引：1
本试验旨在研究日粮添加不同水平维生素B2(VB2)对笼养蛋雏鸭(1～28日龄)生长性能、内分泌及抗氧化能力的影响.选用1日龄平均体重相近(43.13±1.19)g的金定蛋雏鸭288只,采用单因素随机分组试验设计,随机分为6组(分别饲喂在基础日粮中添加0、4、6、10、20、50 mg/kg VB2的试验日粮),每组6个重复,每个重复8只鸭,试验期为4周.试验结果显示:与对照组相比,(1)日粮添加10 mg/kg VB2蛋雏鸭日增重显著升高,料重比显著降低(P<0.05);日粮添加10～20 mg/kg VB2血清T-AOC、SOD、GSH-PX活性和肝脏CAT、GSH-PX活性显著升高(P<0.05),MDA活性显著降低(P<0.05);日粮添加10～20 mg/kg VB2血清T3浓度显著升高(P<0.05);(2)随着VB2添加水平的提高,生长性能与抗氧化能力呈现先增加后降低的趋势.由此得出,日粮添加10 mg/kg VB2能显著增强蛋雏鸭的生长性能和抗氧化能力,VB2添加过高过低都会阻碍抗氧化和促进生长能力的发挥. 相似文献
3.
试验选取1日龄健康、体重相近的金定蛋雏鸭180只,随机分为5个处理组,每个处理6个重复,每个重复6只试鸭。采用玉米-豆粕型基础饲粮,Ⅰ组试验鸭饲喂基础饲粮,Ⅱ～Ⅴ组分别饲喂在基础饲粮中添加110、220、550、1000 IU/kg维生素D的试验饲粮,试验期4周。旨在研究不同维生素D添加水平对1～28日龄蛋雏鸭生长性能及免疫功能的影响,以探讨维生素D的适宜添加量。结果表明,添加550 IU/kg维生素D能显著提高蛋雏鸭平均日增重、降低料重比(P<0.05),显著提高IgA、IgG、T3、T4含量(P<0.05),并显著降低Cort含量(P<0.05)。由此可见,在玉米-豆粕型基础饲粮中添加适量的维生素D可提高蛋雏鸭生长性能及免疫功能。通过二次回归模型分析,估测蛋雏鸭日粮中维生素D的适宜添加量为523.1～560.6 IU/kg。 相似文献
4.
试验旨在研究饲粮添加不同水平的维生素B(2VB2)对笼养蛋雏鸭(1～28日龄)生长性能的影响。选用1日龄平均体重相近[(43.13±1.19)g]的金定蛋雏鸭288只,采用单因素随机分组试验设计。共分为6组,每组6个重复,试验期4周,饲粮中添加VB2水平分别为0、4、6、10、20、50mg/kg。试验结果显示:①在试验全期添加VB2水平第10、20mg/kg组的日增重显著高于不添加VB2处理组(第Ⅰ组)(P<0.05),②试验期内每一周各处理组蛋雏鸭的采食量差异不显著(P>0.05),③在试验第1、4周和全期添加VB2的第Ⅳ组的料重比显著低于不添加VB2的第Ⅰ组(P<0.05)。全期平均料重比最低的是添加VB2水平为10mg/kg组。故试验研究认为,为了降低饲料成本,保证饲料安全,饲粮中添加10mg/kgVB2能显著增强蛋雏鸭的生长性能。 相似文献
5.
本试验旨在研究饲粮维生素E添加水平对蛋种鸭繁殖性能及子代雏鸭生长性能、抗氧化性能的影响,为维生素E在蛋种鸭饲粮中的合理应用提供参考依据。选择健康、体重接近的120日龄福建龙岩麻鸭504只,随机分为6组,每组6个重复,每个重复14只。各组蛋种鸭饲粮维生素E添加水平分别为0、12.5、25.0、50.0、100.0和200.0 mg/kg。子代雏鸭饲喂相同的基础饲粮,维生素E添加水平为20.0 mg/kg。蛋种鸭饲养期24周,子代雏鸭饲养期4周。结果表明：1）随着饲粮维生素E添加水平的增加,蛋种鸭血浆和肝脏α-生育酚含量呈现线性和二次曲线变化（P<0.05）。2）饲粮维生素E添加水平对蛋种鸭种蛋受精率、孵化率及健雏率无显著影响（P>0.05）,但显著影响输卵管重量和优势卵泡重量（P<0.05）。饲粮维生素E添加水平为12.5 mg/kg时,输卵管重量和优势卵泡重量最高。饲粮维生素E添加水平对子代雏鸭的平均日增重、料重比和28日龄体重均无显著影响（P>0.05）。3）饲粮维生素E添加水平显著影响子代雏鸭血浆和肝脏丙二醛（MDA）含量以及血浆谷胱甘肽过氧化物酶（GSH-... 相似文献
6.
为了研究日粮不同锰水平对雏鸭生长性能的影响,试验选择1日龄健康北京雏鸭160只,随机分成4组,对照组饲喂基础日粮(锰含量为18 mg/kg),试验1组、试验2组、试验3组分别在基础日粮中添加60,90,150 mg/kg锰,预试期为2 d,正试期为28 d。结果表明:日粮中添加90 mg/kg锰的试验2组平均日增重显著高于其他各组(P0. 05),采食量和料重比显著低于其他各组(P0. 05)。说明雏鸭生长期锰适宜添加水平为90 mg/kg。 相似文献
7.
试验旨在通过研究饲粮中不同水平的锌对蛋雏鸭的生长性能和血液生化指标的影响,确定其在饲粮中适宜的添加量。试验采用单因素完全随机分组设计,选择1日龄金定蛋雏鸭180只,随机分成5组,每组6个重复,每个重复6只鸭。第Ⅰ组(对照组)饲喂基础饲粮,第Ⅱ～Ⅴ组在玉米-豆粕型基础饲粮基础上分别添加20、40、60、80 mg/kg锌(ZnSO4.7H2O)。试验期为4周。结果表明,适量添加锌有利于提高雏鸭的生长性能、促进蛋白代谢、提高机体的免疫力和增加含锌酶碱性磷酸酶(ALP)和乳酸脱氢酶(LDH)的含量。通过对差异显著的指标与锌添加量间拟合二次回归曲线确定的蛋雏鸭基础饲粮中锌的适宜添加量为51.8 mg/kg。 相似文献
8.
选取180只1日龄樱桃谷肉仔鸭,随机分为6组,每组设三个重复,每个重复10只,安排采食相应的日粮,分别为试验Ⅰ组（基础日粮）、试验Ⅱ组（基础日粮＋400mg/kg儿茶素添加组）、试验Ⅲ组（基础日粮＋800mg/kg儿茶素添加组）、试验Ⅳ组（基础日粮＋1600 mg/kg儿茶素添加组）、试验V组（基础日粮＋800 mg/kgVE添加组）、试验Ⅵ组（基础日粮＋800mg/kg虎杖提取物）,分别对试验前期（14 ～ 28日龄）及试验后期（29 ～ 42日龄）的肉鸭生产性能及血液生化指标进行检测.试验结果表明：各试验组对肉鸭生产性能影响均不显著;各试验组可降低肉鸭血清中尿素氮、血糖、甘油三酯、总胆固醇、低密度酯蛋白的含量,对总蛋白、白蛋白、球蛋白含量无影响（差异不显著）,可提高肉鸭血清中高密度酯蛋白含量,试验Ⅲ组（400mg/kg儿茶素添加组）与试验Ⅳ组（800mg/kg儿茶素添加组）优于其他各添加组,与对照组差异显著,组间差异不显著,表明儿茶素可改善肉鸭血液生化指标. 相似文献
9.
《中国家禽》2019,(1)
试验通过在饲粮中添加不同水平的辣木黄酮,研究其对1～28日龄蛋雏鸭生长、免疫及抗氧化功能的影响,以探讨辣木黄酮的适宜添加量。试验选取健康、体重相近的1日龄三穗蛋雏鸭135只,随机分为3组(Ⅰ～Ⅲ组),每组3个重复,每个重复15只试验鸭。采用基础饲粮加辣木黄酮进行饲喂,Ⅰ组(对照组)试鸭饲喂基础饲粮,Ⅱ、Ⅲ组试鸭分别饲喂在基础饲粮中添加0.2%、0.4%辣木黄酮的试验饲粮,试验期4周。结果显示:饲粮添加0.4%辣木黄酮可显著降低三穗鸭蛋雏鸭料重比(F/G)、提高蛋雏鸭血清免疫蛋白A(IgA)含量(P0.05),降低血清丙二醛(MDA)含量(P0.05)。结果表明:在基础饲粮中添加适量的辣木黄酮可提高1～28日龄蛋雏鸭的饲料利用率、免疫及抗氧化功能,对辣木黄酮在蛋雏鸭的应用上提供了参考依据。 相似文献
10.
试验旨在研究饲粮中微量元素硒添加水平对笼养蛋雏鸭生长性能、免疫器官发育及抗氧化功能等方面的影响。试验采用单因素完全随机分组设计,选取1日龄健康金定蛋雏鸭180只,随机分为5组,每组6个重复,每个重复6只雏鸭。第Ⅰ组为对照组,饲喂玉米-豆粕型基础日粮(硒含量为0.042 mg/kg),第Ⅱ~Ⅴ组分别饲喂在基础日粮中添加0.1、0.15、0.2、0.3 mg/kg硒(实际添加物为亚硒酸钠)的试验日粮,试验期4周。结果表明:①第Ⅲ组的平均日增重、料重比与对照组相比均差异极显著(P<0.01),且日增重和料重比随饲粮硒含量的增加呈明显的二次曲线变化;②饲粮中添加硒可促进免疫器官发育,但对胸腺指数以外的免疫器官指数影响不显著(P>0.05);③饲粮中添加硒可极显著提高笼养蛋雏鸭GSH-Px活性和T-AOC(P<0.01),降低血清和肝脏MDA含量(P<0.01);④以试验各项测定结果为依据,估测的硒适宜添加水平分别是0.154、0.172、0.180 mg/kg。采用玉米-豆粕型基础日粮蛋雏鸭添加量为0.180 mg/kg时效果最好。 相似文献
11.
Slocombe JO McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1985,26(10):323-327
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12.
13.
Slocombe JO McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1984,25(9):347-350
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14.
15.
Slocombe JO Villeneuve A 《The Canadian veterinary journal. La revue veterinaire canadienne》1993,34(10):630-633
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.
Owen J Slocombe D McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1986,27(9):324-328
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.
Slocombe JO McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1989,30(6):504-508
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.
Slocombe JO McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1988,29(8):641-646
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.
Owen J Slocombe D McMillan I 《The Canadian veterinary journal. La revue veterinaire canadienne》1987,28(8):491-495
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