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1.
日粮不同锌添加水平对育成期雄性水貂消化代谢、生长性能和血清生化指标的影响 总被引：1，自引：1，他引：0
本试验选用硫酸锌和蛋氨酸螯合锌两种锌源,在日粮添加60 mg/kg硫酸锌、蛋氨酸螯合锌为0、15、30、45、60、75 mg/kg 水平下,对比研究了不同锌水平对育成期雄性水貂营养物质消化率、氮代谢和血清生化指标的影响。结果表明,育成期雄性水貂日粮中添加15 mg/kg的蛋氨酸螯合锌时,水貂采食量和蛋白质消化率较高(P<0.05)。日粮中添加锌水平对水貂干物质消化率、脂肪消化率、氮代谢、生长性能和血清尿素氮、血清乳酸脱氢酶活性没有显著性影响(P>0.05)。 相似文献
2.
不同锌源与锌水平日粮对生长期雌性水貂营养物质消化率及氮代谢的研究 总被引：2，自引：2，他引：0
本试验主要研究了不同锌源及锌水平对生长期雌性水貂营养物质消化率及氮代谢的影响。本试验采用单因子试验设计,每组12个重复,每个重复1只,Ⅰ-Ⅵ组水貂基础日粮中蛋氨酸螯合锌添加量(以锌元素计)分别为0(Ⅰ组)、15(Ⅱ组)、30(Ⅲ组)、45(Ⅳ组)、60(Ⅴ组)、75 mg/kg(Ⅵ组)、Ⅶ组水貂基础日粮中硫酸锌添加量(以锌元素计)为60 mg/kg。结果表明,冬毛生长期雌性水貂对添加蛋氨酸螯合锌水平为45 mg/kg的日粮的干物质、蛋白质和脂肪的消化率最高;不同锌源及锌水平日粮对生长期雌性水貂氮代谢的影响无显著差异。 相似文献
3.
为了探究同一添加水平的5种锌源对AA肉仔鸡生长性能、小肠金属硫蛋白(MT)mRNA及组织锌含量的影响,试验采用单因子随机设计,将240只1日龄AA肉仔鸡随机分成5组,选用玉米-豆粕型基础日粮(含锌22.68 mg/kg),在日粮中分别加入2种无机锌(ZnO、ZnSO4)和3种氨基酸螯合锌[赖氨酸锌(Lys-Zn)、蛋氨酸锌(Met-Zn)、甘氨酸锌(Gly-Zn),含锌量均为90 mg/kg],试验期为21 d,测定肉仔鸡生产性能、组织锌含量及MT mRNA相对表达量。结果表明:5种锌对肉鸡生长性能、肝脏和血液锌含量均无显著影响(P0.05)。Gly-Zn和Met-Zn组的胰脏、胫骨锌含量和小肠MT mRNA相对表达量显著高于2个无机锌组(P0.05);Lys-Zn组胰脏、胫骨锌含量和空肠MT mRNA相对表达量显著高于ZnO组(P0.05),与ZnSO4组无显著差异(P0.05),但有升高趋势。3种氨基酸螯合锌组中,Gly-Zn组和Met-Zn组胫骨锌含量、十二指肠MT mRNA相对表达量显著高于Lys-Zn组(P0.05);2种无机锌组中,ZnO组胰脏、胫骨锌含量显著低于ZnSO4组(P0.05)。说明Gly-Zn和Met-Zn能显著提高肉仔鸡小肠MT mRNA表达水平,增加组织锌含量。 相似文献
4.
《饲料工业》2016,(12)
通过试验研究不同水平纳米锌对半滑舌鳎消化酶的影响。试验鱼选取体重为(52.68±0.13)g,随机分成7组,每组3个重复,分别投喂添加量为0、30、60、90、120和180 mg/kg的纳米锌,另外一组添加60 mg/kg的无机锌(Zn SO4·7H2O),经过84 d喂食后每个重复随机选取6尾试验鱼进行指标测定。结果表明:1肝胰脏及前肠蛋白酶活力分别在纳米锌添加量为90、60 mg/kg时达到最大值,且90 mg/kg时肝胰脏蛋白酶活力显著高于其他各组(P0.05);纳米锌添加量为90 mg/kg及无机锌组对中肠蛋白酶的影响均显著高于除60 mg/kg组之外其它各组(P0.05);60 mg/kg组对后肠蛋白酶的影响显著高于对照组及30 mg/kg组(P0.05),对其他各组无显著性影响(P0.05)。2肝胰脏及肠道的脂肪酶活力最大值均出现在纳米锌添加量为0 mg/kg组,且中肠脂肪酶活力显著高于其他各组(P0.05)。3当纳米锌添加量为120 mg/kg时肝胰脏及前肠的淀粉酶活力均呈最大值,且肝胰脏淀粉酶活力显著高于除90 mg/kg组之外其他各组(P0.05),前肠淀粉酶活力显著高于除180 mg/kg组之外其他各组(P0.05);中肠淀粉酶活力在无机锌组呈现最大值且显著高于其他各组(P0.05);对后肠淀粉酶的影响也在无机锌组呈现最大值,但除显著高于90 mg/kg组外(P0.05),对其他各组无显著性影响(P0.05)。 相似文献
5.
日粮锌源和添加水平对断奶仔猪组织锌及粪便排泄锌含量的影响 总被引：2，自引：0，他引：2
试验选用21日龄"杜×长×大"三元杂交的断奶仔猪40头,按体重和性别随机分成4组(Ⅰ～Ⅳ组),每组10头猪。分别饲喂添加氧化锌(以锌量计)Ⅰ组(对照组)100 mg/kg、Ⅱ组3 000 mg/kg和蛋氨酸锌(以锌量计)Ⅲ组100 mg/kg、Ⅳ组300 mg/kg的基础日粮,预试验7 d,正式试验42 d,结果表明:高锌3 000 mg/kg氧化锌使肝脏、肾脏和十二指肠锌含量极显著升高(P0.01),十二指肠和肝脏锌含量Ⅳ组显著高于Ⅰ、Ⅲ组,脾脏、淋巴结锌含量各组间差异均不显著(P0.05);高锌日粮可使断奶仔猪粪便中锌排泄浓度显著增加,易造成环境污染,日粮添加相同剂量锌的蛋氨酸锌组猪粪便中锌排泄量低于氧化锌组。 相似文献
6.
锌源对凡纳滨对虾生长免疫的影响 总被引：1，自引：0，他引：1
凡纳滨对虾配合饲料中添加20、40、60、80和100mg/kg硫酸锌和蛋氨酸锌。饲养4和10周称质量,并采集对虾血清、肝胰脏和肌肉,测定血清中酚氧化酶(PO)和碱性磷酸酶(AKP)活性及肝胰脏和肌肉中的锌含量。试验结果表明,锌源和锌水平影响对虾4周末体质量,但对10周末的体质量无影响。锌源和锌水平不影响血清中的PO,但硫酸锌组AKP表现出随添加量的升高而显著提高,蛋氨酸锌组AKP差异不显著。2种锌源的添加水平对肌肉中的锌含量无影响,但对肝胰脏中锌含量影响显著。生长、酶活和组织锌含量的统计结果表明,锌源之间存在显著差异,蛋氨酸锌的营养效果好于硫酸锌。饲料中蛋氨酸锌的添加量为40~60mg/kg时,凡纳滨对虾的生长和免疫效果最好。 相似文献
7.
《饲料工业》2017,(10):9-14
试验以纳米锌(20 nm)为锌源,在基础饲料中分别添加纳米锌0、30、60、90、120 mg/kg和180 mg/kg,添加无机锌60 mg/kg(W60);配制成7种等氮等能的饲料,投喂初体重为(52.68±0.13)g的半滑舌鳎84 d,研究纳米锌水平对半滑舌鳎的生长、肌肉营养成分和血液部分生化指标的影响。结果表明,当纳米锌的添加量为90 mg/kg时,增重率、饲料效率及蛋白质效率显著高于除60 mg/kg组的其他各组(P0.05),与60 mg/kg组无显著性差异(P0.05)。肌肉营养成分组成各试验组无显著性差异(P0.05)。120 mg/kg组、180 mg/kg组及W60组的血红蛋白含量显著高于除对照组(0 mg/kg)之外其他各组(P0.05);纳米锌添加量为0~90 mg/kg组NBT显著高于其他组别(P0.05);90 mg/kg组与W60 A/G差异不显著(P0.05),但均显著低于其他各组(P0.05)。血清GOT活力W60组显著高于除对照组之外其余各组(P0.05)。血清GPT活力在90 mg/kg组出现最大值并显著高于除W60组外其他各组(P0.05)。CHO含量120 mg/kg组及W60组显著高于对照组及30 mg/kg组(P0.05);TG含量在90 mg/kg组出现最大值并显著高于其他组(P0.05)。综上所述,在基础饲料中纳米锌添加量为90 mg/kg时,既可以提高半滑舌鳎的生长性能,又可以提高其非特异性免疫力,同时对其肝脏影响较小。 相似文献
8.
锌源和锌水平对奥尼罗非鱼生长性能、抗氧化指标和体组成的影响 总被引：3，自引：0，他引：3
本研究旨在观察实用饲料中添加不同锌源和锌水平对罗非鱼生长性能、抗氧化指标和体组成的影响.试验选用初重为(2.98±0.02)g的奥尼罗非鱼1 080尾,随机分为9组,每组4个重复,每个重复30尾.分别饲喂1种实用对照饲料和8种添加不同水平硫酸锌(记作Zn-10、Zn-20、Zn-30和Zn-60)和蛋氨酸锌(记作MZn-10、MZn-20、MZn-30和MZn-60)的试验饲料,2种锌源饲料中的锌添加量分别为10、20、30和60 mg/kg,试验期为8周.结果显示:Zn-60和MZn-60组的增重率显著高于对照组(P<0.05),饲料系数显著低于对照组(P<0.05).罗非鱼肝脏超氧化物歧化酶和总抗氧化能力水平分别在MZn-20组达到最高,显著高于对照组、Zn-10和Zn-60组(P<0.05);过氧化氢酶活性在MZn-20组显著高于Zn-30、Zn-60和MZn-60组(P<0.05).与对照组和硫酸锌组相比,蛋氮酸锌组罗非鱼肌肉粗蛋白质含量显著升高(P<0.05),肌肉粗脂肪含量显著降低(P<0.05);与对照组相比,Zn-20和Zn-30组肌肉粗脂肪含量显著降低(P<0.05),Zn-10组肌肉灰分含量显著升高(P<0.05).随饲料中锌添加量的增加,罗非鱼肥满度呈现出先下降后增加的趋势,在Zn-20和MZn-30组达到最低,显著低于对照组和其他各蛋氨酸锌组(P<0.05).添加锌的各试验组罗非鱼肝体比呈升高趋势,Zn-30和MZn-60组显著高于对照组(P<0.05),罗非鱼脂体比在MZn-60组显著高于对照组(P<0.05).由此得出,实用饲料中添加60 mg/kg锌能够提高罗非鱼幼鱼的生长性能,硫酸锌和蛋氨酸锌的促生长作用效果相似;实用饲料中添加10～20 mg/kg锌能够增强罗非鱼抗氧化能力,蛋氨酸锌抗氧化作用明显优于硫酸锌. 相似文献
9.
《动物营养学报》2015,(10)
本文旨在研究饲粮中添加螯合锌对冬毛期貉生长性能、营养物质表观消化率、血清指标、毛皮品质的影响。选择健康冬毛期貉120只,随机分为4组,即3个试验组(Ⅰ组、Ⅱ组、Ⅲ组)与1个对照组(Ⅳ组),每组30只(公母各占1/2)。以蛋氨酸锌为螯合锌源,一水合硫酸锌(Zn SO4·H2O)为无机锌源,Ⅰ组、Ⅱ组、Ⅲ组、Ⅳ组分别饲喂基础饲粮+50 mg/kg蛋氨酸锌+20 mg/kg Zn SO4·H2O、基础饲粮+60 mg/kg蛋氨酸锌+10 mg/kg Zn SO4·H2O、基础饲粮+70 mg/kg蛋氨酸锌、基础饲粮+70 mg/kg Zn SO4·H2O(数据均为锌含量,基础饲粮中锌含量为42.89 mg/kg)。试验期为55 d。结果表明:1)3个试验组的终末体重和饲料转化率均显著或极显著均高于对照组(P0.05或P0.01)。Ⅱ组、Ⅲ组的平均日增重显著高于对照组(P0.05)。2)3个试验组的粗蛋白质表观消化率与对照组相比无显著差异(P0.05),但粗脂肪表观消化率显著高于对照组(P0.05)。3)3个试验组的血清锌含量、碱性磷酸酶活性均极显著高于对照组(P0.01)。4)与对照组相比,3个试验组的颈部、背部、臀部针毛长度以及绒毛长度与绒毛直径均增加,但针毛直径降低,其中Ⅲ组颈部、背部、臀部针毛直径显著或极显著小于对照组(P0.05或P0.01)。5)3个试验组的皮张单位面积重量显著或极显著高于对照组(P0.05或P0.01)。综上所述,饲粮中添加螯合锌后冬毛期貉体重、平均日增重、饲料转化率、粗脂肪表观消化率、皮张品质均有提升,但针毛直径减小;当螯合锌添加量为70 mg/kg时,针毛发生卷曲,建议生产中螯合锌添加量为60 mg/kg(饲粮总锌含量为102.89 mg/kg)。 相似文献
10.
凡纳滨对虾配合饲料中添加20、40、60、80和100mg／kg硫酸锌和蛋氨酸锌。饲养4和10周称质量，并采集对虾血清、肝胰脏和肌肉，测定血清中酚氧化酶（PO）和碱性磷酸酶（Al（P）活性及肝胰脏和肌肉中的锌含量。试验结果表明，锌源和锌水平影响对虾4周末体质量，但对10周末的体质量无影响。锌源和锌水平不影响血清中的PO，但硫酸锌组AKP表现出随添加量的升高而显著提高，蛋氨酸锌组AKP差异不显著。2种锌源的添加水平对肌肉中的锌含量无影响，但对肝胰脏中锌含量影响显著。生长、酶活和组织锌含量的统计结果表明，锌源之间存在显著差异，蛋氨酸锌的营养效果好于硫酸锌。饲料中蛋氨酸锌的添加量为40～60mg／kg时。凡纳滨对虾的生长和免疫效果最好。 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.
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