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1.
为了研究复合酶制剂对断奶仔猪生长性能及其血清免疫力的影响,笔者选择21日龄健康断奶仔猪（“杜×长×大”三元杂交仔猪）240头,随机分为4个处理组,每个处理组6个重复,每个重复10头猪。试验期50 d。对照组饲喂玉米-豆粕型基础日粮,试验组Ⅰ在基础日粮中添加0.1 kg/t复合酶制剂;试验组Ⅱ在基础日粮中添加0.2 kg/t复合酶制剂;试验组Ⅲ在基础日粮中添加0.3 kg/t复合酶制剂。研究结果表明,在营养相同的条件下,饲粮中添加复合酶制剂能提高断奶仔猪的日增重、降低料肉比;能提高断奶仔猪血清的IgA、IgG、IgM的含量。与对照组相比,试验组Ⅱ猪只的生长性能和血清免疫力效果最好,在基础日粮中添加0.2 kg/t的复合酶制剂能显著（P<0.05）提高仔猪的平均日增重,显著（P<0.05）降低仔猪的料肉比;在基础日粮中添加0.2 kg/t的复合酶制剂能显著（P<0.05）增加断奶仔猪血清IgA、IgM的含量,极显著增加断奶仔猪血清IgG的含量。综上所述,本次试验中在基础日粮中添加复合酶制剂能提高断奶仔猪的生长性能和血清免疫力,建议最佳添加量为0.2 kg/t。 相似文献
2.
试验选用体重和断奶日龄相近的"杜×长×大"三元杂交断奶仔猪(平均体重为9.08kg)60头以研究复合酶制剂对断奶仔猪生长性能的影响。试验猪按完全随机区组设计分为4个处理,每处理设3个重复,每个重复5头猪。对照组饲喂基础日粮(玉米/豆粕型),试验一、二、三组在基础日粮中分别添加0.05%、0.10%和0.15%的复合酶制剂。结果表明:日粮中添加0.05%、0.10%和0.15%的复合酶制剂,断奶仔猪的平均日增重分别提高8.82%(P0.05)、15.06%(P0.05)和11.53%(P0.05);料重比分别降低6.77%(P0.05)、10.53%(P0.05)和8.27%(P0.05);日粮中添加0.05%、0.10%和0.15%的复合酶制剂,仔猪饲料纤维和磷的消化率得到显著改善(P0.05),添加0.10%的复合酶制剂,仔猪饲料蛋白质消化率显著提高(P0.05)。因此,在断奶仔猪玉米-豆粕型日粮中,添加含酸性蛋白酶、中性蛋白酶、α-淀粉酶、糖化酶、β-葡聚糖酶、β-甘露聚糖酶及木聚糖酶的复合酶制剂,可促进饲料养分的消化,显著提高仔猪的日增重,降低料重比,减少腹泻的发生。复合酶制剂的添加量以0.10%效果最佳。 相似文献
3.
试验旨在研究蛋氨酸锌和复合酶制剂对早期断奶仔猪生长和消化性能的影响。试验将96头(26±2)日龄(杜×长×大)断奶仔猪随机分成4组,每组3个重复,分别饲喂基础日粮(Ⅰ组)、添加250 mg/kg蛋氨酸锌、1%复合酶制剂和250 mg/kg蛋氨酸锌+1%复合酶制剂的3种处理日粮(分别为Ⅱ、Ⅲ和Ⅳ组)。结果显示:与对照组相比,日粮添加蛋氨酸锌、复合酶制剂和蛋氨酸锌+复合酶制剂均不同程度地提高了断奶仔猪的生长性能,降低腹泻率,其中添加蛋氨酸锌+复合酶制剂效果最为显著(P0.05);Ⅱ和Ⅳ组仔猪血清锌含量和碱性磷酸酶活性要明显高于对照组(P0.05);添加酶制剂(Ⅲ和Ⅳ组)能显著提高血清钙、磷的质量浓度、饲料干物质、粗蛋白和粗脂肪的消化率(P0.05)。结果表明,日粮中同时添加蛋氨酸锌和复合酶制剂能有效提高断奶仔猪的生长性能和消化性能,降低腹泻率,其饲喂效果要优于二者单独添加。 相似文献
4.
试验研究不同组合的酶制剂及其与微生态制剂的配伍对仔猪营养物质消化率的影响。将60头体质量(30±2.5)kg的健康仔猪随机分为A、B和C组共3个处理组,每处理组2个重复,每重复10头,其中A组为对照组,饲喂由4.00%仔猪复合预混料与相应推荐配比大原料组成的全价基础日粮;B组在基础日粮中添加300 g/t复合酶制剂(纤维素、木聚糖酶、α-淀粉酶和酸性蛋白酶等);C组在基础日粮中添加300 g/t酶制剂与200 g/t枯草芽孢杆菌。试验期35 d,采用Cr2O3指示剂法,测定仔猪日粮中钙、磷、粗蛋白、粗脂肪和粗纤维等营养物质的消化率。与饲喂基础日粮的对照组相比,B和C组钙消化率分别提高23.89%和26.40%,粗蛋白消化率分别降低13.10%和15.40%,粗纤维消化率分别提高17.50%和16.80%,均差异显著(P0.05)。B和C组磷和粗脂肪消化率高于对照组,但组间差异不显著(P0.05)。在仔猪日粮中添加复合酶制剂及酶制剂与芽孢杆菌配伍组合均能提高仔猪对钙、粗蛋白质和粗纤维的消化率。 相似文献
5.
为了测定膨化壳聚糖微粒对仔猪养分消化率与肠道消化酶活性的影响,试验选取(杜×长×大)断奶(28日龄)仔猪72头,随机分为4个日粮处理组(设对照组和试验组,对照组饲喂基础日粮,试验组分别在基础日粮中添加0.01%、0.02%和0.03%的膨化壳聚糖微粒),每个处理组3个重复,每个重复6头猪,公母各半,预试期7 d,正试期40 d。试验结果表明:0.02%膨化壳聚糖组显著提高了仔猪日粮中粗灰分、磷的表观消化率和小肠中淀粉酶的活性,而显著性降低粗脂肪的表观消化率和小肠中脂肪酶活性(P<0.05)。提示膨化壳聚糖微粒通过影响仔猪小肠内消化酶的活性而改变日粮营养物质表观消化率。 相似文献
6.
选用25～27日龄断奶的"长×大"二元杂交断奶仔猪96头[平均体重为(7.31±0.14)kg],以研究不同复合酶对断奶仔猪生产性能和饲料养分消化率的影响。试验仔猪按完全随机区组设计分为4个处理,每个处理3个重复,每个重复8头仔猪,试验期14 d。对照组饲喂基础日粮,试验组A、B、C在基础日粮中分别添加不同的复合酶A、B、C。试验结果表明:基础日粮中添加复合酶A、B、C后,断奶仔猪的平均日增重分别提高了7.58%(P<0.05)、10.15%(P<0.05)和5.74%(P<0.05),料重比分别降低了5.47%(P<0.05)、8.59%(P<0.05)和6.25%(P<0.05),有机物、粗蛋白和磷的消化率显著提高(P<0.05),粗蛋白的消化率分别提高了2.96%、3.3%和2.26%。在3种复合酶中,以复合酶B的效果为最好,其次为复合酶A和C。 相似文献
7.
探讨液体复合酶对肉鸡El粮表观代谢能(AME)及蛋白质利用率的影响,选用16只体质量一致的21日龄AA肉公鸡,随机分为对照组和试验组2个处理,每处理8个重复,每重复1只鸡,试验组日粮在对照组日粮基础中添加100 mL/t液体复合酶配制.结果表明,添加KDN液体复合酶808L组能显著改善日粮的AME(P＜0.05),可提高日粮代谢能0.67 MJ/kg,显著提高日粮能量表观消化率3.1%(P＜0.05),提高日粮蛋白质表观消化率1.8%. 相似文献
8.
选择16.5kg左右的杜大长三元杂交仔猪12头，随机分成2组，每组6头，对照组饲喂基础日粮，试验组饲喂基础日糖＋0.1%复合酶制剂；采用全收粪法进行消化试验，测定了玉米－豆粕一次粉型日粮中添加复合酶对仔猪主要营养成分消化利用率的影响。试验结果表明，复合酶制剂可使饲料中主要营养物质的表观消化率有提高趋势，其中能显著地提高粗纤维的表观消化率（P＜0.05），但干物质、粗蛋白、粗脂肪、粗灰分及能量与对照日粮相比均无显著差异（P＞0.05）。 相似文献
9.
研究旨在比较常规日粮中添加4种不同复合酶制剂对断奶仔猪生长性能、饲料养分消化率和仔猪腹泻率的影响.试验选取28日龄杜长大断奶仔猪120头,随机分为5组,每组3个重复,每个重复8头,分别饲喂基础日粮与在基础日粮中分别添加500 mg/kg复合酶A、B、C、D的试验日粮.试验为期30 d.结果表明,复合酶A和D均可显著提高断奶仔猪日增重(P＜0.05),降低料重比(P＜0.05),复合酶B和C与对照组和复合酶A组、D组之间差异不显著(P＞0.05);复合酶A和D可极显著降低断奶仔猪腹泻频率(P＜0.01).复合酶A显著提高了断奶仔猪对粗蛋白、总能和消化能的表观消化率(P＜0.05),对谷氨酸、丙氨酸等氨基酸的消化率也有显著提高(P＜0.05).各复合酶均能提高断奶仔猪生产性能和养分消化率,以复合酶A为最佳. 相似文献
10.
文章旨在研究复合酶制剂对仔猪生长性能、血清抗氧化指标和免疫指标的影响,本试验将120头“杜×长×大”断奶仔猪随机分为4组,对照组为基础日粮组,试验Ⅰ、Ⅱ、Ⅲ组分别添加250、500、1000 mg/kg复合酶制剂,试验为期28 d。结果表明,与对照组相比,各试验组（Ⅰ、Ⅱ和Ⅲ组）仔猪在饲喂添加了复合酶制剂的日粮后,试验全期各阶段的平均日增重显著升高（P <0.05）,料重比显著降低（P <0.05）;与对照组相比,各试验组（Ⅰ、Ⅱ和Ⅲ组）仔猪血清中的丙二醛含量显著降低（P <0.05）,谷胱甘肽过氧化物酶显著升高（P <0.05）;与对照组相比,各试验组（Ⅰ、Ⅱ和Ⅲ组）仔猪血清中白介素10的含量显著升高（P <0.05）,在试验第28天,试验Ⅲ组仔猪血清中免疫球蛋白A含量显著升高（P <0.05）。综上所述,日粮添加复合酶制剂可显著提高仔猪的生长性能,增强抗氧化能力及机体免疫力。 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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