共查询到20条相似文献，搜索用时 250 毫秒
1.
试验旨在探讨微生态制剂对生长猪生长性能、养分消化率、氮磷排放量及血清免疫指标的影响。选取48头29kg左右的(杜×长×大)生长猪,随机分成对照组、抗生素组和微生态制剂组,每组4个重复,每个重复4头猪。对照组饲喂基础饲粮,抗生素组饲喂添加75mg/kg金霉素的基础饲粮,微生态制剂组饲喂添加2 000mg/kg微生态制剂的基础饲粮,试验期28d。结果表明:(1)与对照组相比,微生态制剂组和抗生素组的日采食量和日增重显著提高(P<0.05),料肉比降低(P>0.05);(2)微生态制剂组的粗蛋白、粗纤维、灰分、能量和无氮浸出物的表观消化率显著高于对照组(P<0.05),粗脂肪、钙和磷的表观消化率提高(P>0.05),与抗生素组相比,各养分表观消化率均提高,但差异不显著(P>0.05);(3)微生态制剂组和抗生素组单位增重氮(N)P的摄入量较对照组高,但差异不显著(P>0.05),单位增重粪N、P排放量方面,微生态制剂组较对照组低(P>0.05),抗生素较对照组高(P>0.05);(4)与对照组相比,微生态制剂组和抗生素组的血清IgG和IgM水平有不同程度的提高,但两者间差异不显著(P>0.05)。研究表明,饲粮中添加2 000mg/kg微生态制剂可提高生长猪的生长性能和养分消化率,减少粪中N、P排放和增强免疫力。 相似文献
2.
试验旨在研究在蛋种鸡日粮中添加不同微生态制剂对其生产性能、蛋品质、养分表观消化率以及抗氧化能力的影响。将1 440只海兰白蛋种鸡(57周龄)随机分为4组,每组4个重复,每个重复90只,试验Ⅱ、Ⅲ组分别饲喂添加0.1%、0.2%依润-200的基础日粮,试验Ⅳ组饲喂添加某种国产微生态制剂基础日粮,对照组饲喂基础日粮,试验期42d。结果表明,依润-200添加组均能降低料蛋比,其中0.1%添加组最为显著,料蛋比降低2.41%(P<0.05);0.2%试验组与对照组比较,产蛋率提高1.96%(P<0.05),与对照组相比,添加微生态制剂的各处理组软、破蛋率均有不同程度降低,种蛋合格率均有不同程度的提高;添加微生态制剂对蛋品质无显著影响(P>0.05);添加不同微生态制剂的各处理组营养物质表观消化率较对照组均有不同程度的提高,但差异均不显著(P>0.05);微生态制剂可不同程度地提高蛋鸡血清总抗氧化能力,其中0.2%添加组血清总抗氧化能力(T-AOC)提高最为显著(P<0.05),各试验组血清超氧化物岐化酶(SOD)含量变化均不大(P>0.05)。因此,本试验条件下,添加量为0.1%为宜。 相似文献
3.
《黑龙江畜牧兽医》2017,(14)
为研究不同添加水平复合微生态制剂对断奶仔猪养分表观消化率和血液生化指标的影响,试验选择21日龄断奶仔猪120头,随机分成4组(对照组、Ⅰ组、Ⅱ组、Ⅲ组),对照组饲喂基础日粮,Ⅰ组、Ⅱ组、Ⅲ组分别在基础日粮中添加0.5,1.0,2.0 g/kg的复合微生态制剂。结果表明:与对照组相比,Ⅰ组、Ⅱ组、Ⅲ组粗蛋白、总钙、总磷消化率显著提高(P0.05),总蛋白、白蛋白含量显著提高(P0.05),尿素氮、碱性磷酸酶含量显著降低(P0.05);与Ⅰ组、Ⅱ组相比,Ⅲ组粗蛋白、总蛋白、总磷消化率显著提高(P0.05)。说明复合微生态制剂可显著提高仔猪的养分表观消化率,改善血液生化指标,且2.0 g/kg添加剂量的作用效果更为显著。 相似文献
4.
试验旨在研究辣诺提取物(辣木和诺丽果提取物,MM)对断奶仔猪生长性能、养分消化率及腹泻的影响。选择34日龄、平均体重(9.52±0.20)kg的150头健康杜长大三元杂种断奶仔猪,按照体重相近、公母各半的原则随机分为3组:T1为对照组(基础饲粮,无抗生素)、T2为试验组1(基础饲粮+200 mg/kg MM),T3为试验组2(基础饲粮+400 mg/kg MM)。每组5个重复,每个重复10头仔猪,正式试验期21 d。结果表明:1)与对照组相比,添加200或400 mg/kg MM的处理组腹泻率分别显著降低31.60%(P<0.05)和35.69%(P<0.05),腹泻指数差异不显著(P>0.05);2)400 mg/kg MM组仔猪平均日增重和平均日采食量分别比对照组提高15.69%(P<0.05)和17.81%(P<0.05),200 mg/kg MM组平均日增重和平均日采食量与对照组相比差异均不显著(P>0.05),3个处理组的料重比差异也不显著(P>0.05);3)与对照组相比,添加MM均显著提高干物质、氮和总能表观消化率(P<0.05)。试验结果表明,在该试验条件下,断奶仔猪饲粮中添加200或400 mg/kg MM均可以改善仔猪腹泻,提高养分表观消化率,且400 mg/kg MM组生长性能最好。 相似文献
5.
《中国饲料》2019,(21)
为研究复合微生态制剂对仔猪生长性能和养分表观消化率的影响,试验选取120头(60头雌性和60头雄性)28日龄断奶的三元杂交仔猪,称重后随机分为4组。对照组饲喂基础日粮,试验Ⅰ、Ⅱ、Ⅲ组在基础日粮中分别添加0.05%、0.1%、0.2%的复合微生态制剂,试验期30 d。试验结果显示:相比于对照组,试验Ⅱ、Ⅲ组仔猪平均末重分别增加9.3%、6.5%(P 0.05),平均日增重分别增加20.6%、14.7%(P 0.05),Ⅱ组料肉比降低11.3%(P 0.05)。试验Ⅱ组粗蛋白质的表观消化率较对照组提高9.6%(P 0.05),Ⅰ、Ⅱ、Ⅲ组粗纤维表观消化率较对照组分别提高19.0%、64.9%、35.3%(P 0.05),试验Ⅱ、Ⅲ组粗脂肪表观消化率较对照组分别提高10.5%、8.1%(P 0.05),Ⅱ组总钙表观消化率提高5.1%(P 0.05),其他指标差异不显著(P 0.05)。综述,饲料中添加复合微生态制剂有助于仔猪的生长并能显著提高仔猪对营养物质的表观消化率,其中添加量为0.1%时效果较好。 相似文献
6.
试验旨在研究微生态与负离子复合制剂对断奶仔猪生长性能及肠道菌群的影响,为生产中应用无抗饲料添加剂以及减轻仔猪断奶应激提供参考。试验选用40头体重和日龄一致的断奶仔猪,随机分为对照组和试验组,公母各半,每组5个重复。对照组饲喂基础日粮,试验组饲喂基础日粮+0.5%微生态与负离子复合制剂。结果表明:①与对照组相比,试验组仔猪平均日增重极显著增加(P0.01),料重比极显著降低(P0.01)。②与对照组相比,试验组仔猪对干物质和粗灰分表观消化率显著升高(P0.05),粗蛋白质表观消化率极显著提高(P0.01)。③与对照组相比,试验组仔猪腹泻率显著降低(P0.05),仔猪肠道大肠杆菌数量显著降低(P0.05),乳酸菌数量显著增加(P0.05)。综上所述,微生态与负离子复合制剂可显著提高仔猪生长性能,维持肠道菌群平衡,减少仔猪腹泻。 相似文献
7.
为研究低营养水平饲粮添加单一或复合非淀粉多糖酶对生长肥育猪生长性能、养分消化率和肉品质的影响,试验选择体重(47.5±1.3)kg的200头健康杜长大三元杂种生长猪,按体重相近、公母各半的原则,随机分为4组,每组5个重复,每个重复10头生长猪。正对照组饲喂基础饲粮,负对照组饲喂低营养水平饲粮,单一酶制剂组饲喂负对照组饲粮+500 g/t甘露聚糖酶,复合酶制剂组饲喂负对照组饲粮+500 g/t复合非淀粉多糖酶(主要为甘露聚糖酶和半乳糖苷酶)。预试期3 d,正式试验期70 d。结果表明:1)与负对照组相比,正对照组、单一酶制剂组和复合酶制剂组显著提高了末重、日增重,并显著降低了料重比;2)35 d时,正对照组和单一酶制剂组对干物质的表观消化率显著高于负对照组和复合酶制剂组(P<0.05);3)35 d时,正对照组和复合酶制剂组对氮和总能的表观消化率显著高于负对照组和单一酶制剂组(P<0.05);4)各处理组对猪肉品质无显著影响(P>0.05)。试验结果表明在该试验条件下,低营养水平饲粮降低了生长肥育猪的生长性能和养分表观消化率,而在生长肥育猪低营养水平饲粮中添加单一或复合非淀粉多糖酶都可以部分提高生长性能和养分表观消化率,且对猪肉品质无影响。 相似文献
8.
日粮中添加微生态制剂对豪猪生长性能和养分利用率的影响研究 总被引：1，自引：0，他引：1
本研究旨在探讨微生态制剂对豪猪生长性能和养分的表观消化率的影响.选取3月龄、体重相近的豪猪18只,随机分成2组,每组9只3个重复(1雄2雌),分别饲喂2种不同的日粮:对照组为基础日粮,试验组为基础日粮 0.5%微生态制剂,进行28d的饲养试验,并用内源指示剂法(4 mol/L HCI不溶灰分)测定试验豪猪对日粮养分的消化率.结果表明:在整个试验期间2组试验豪猪平均日增重差异不显著(P>0.05),料重比差异不显著(P>0.05):但试验组的粗灰分消化利用率显著高于对照组,(0.010.05),日粮中添加微生态制剂并未表现出养分利用率上的优势. 相似文献
9.
本试验旨在研究喷浆玉米皮对肉兔生长性能、养分表观消化率及肉品质的影响。试验选取39日龄伊拉幼兔300只,公母各占1/2,根据体重和性别随机分为5组(对照组及Ⅰ、Ⅱ、Ⅲ、Ⅳ组),分别饲喂含不同比例喷浆玉米皮(0、6%、12%、18%和24%)的试验饲粮,每组60个重复,每个重复1只兔。预试期5 d,正试期50 d。结果表明:1)Ⅲ、Ⅳ组末重和平均日增重显著低于对照组及Ⅰ、Ⅱ组(P<0.05);对照组及Ⅰ、Ⅱ组间末重和平均日增重差异不显著(P>0.05),Ⅲ组的料重比显著高于对照组及Ⅰ、Ⅱ组(P<0.05),Ⅳ组料重比显著高于对照组及Ⅰ、Ⅱ、Ⅲ组(P<0.05),对照组及Ⅰ、Ⅱ组间料重比差异不显著(P>0.05)。2)与对照组相比,添加喷浆玉米皮试验兔干物质表观消化率逐渐降低,以Ⅳ组最低,显著低于对照组及其他试验组(P<0.05),其他试验组与对照组间差异不显著(P>0.05),但高于Ⅳ组;各试验组粗蛋白质表观消化率显著低于对照组(P<0.05),各试验组间差异不显著(P>0.05);Ⅱ、Ⅳ组中性洗涤纤维表观消化率显著低于对照组(P<0.05),其他试验组与对照组间差异不显著(P>0.05);各试验组与对照组间粗灰分表观消化率、酸性洗涤纤维表观消化率差异不显著(P>0.05)。3)对照组及Ⅰ、Ⅱ组间宰前重和胴体重差异不显著(P>0.05),但与Ⅲ、Ⅳ组差异显著(P<0.05),Ⅰ组半净膛屠宰率显著低于其他组(P<0.05),其他试验组与对照组间差异不显著(P>0.05)。综合考虑本试验所测指标,肉兔饲粮中适宜的喷浆玉米皮添加比例为6%~12%。 相似文献
10.
为研究复合微生态制剂对乌骨羊生产性能及养分表观消化率的影响,试验选择体重相近的乌骨羊90只,随机分成3个组,每个组3个重复,每个重复10只,1组饲喂基础日粮为空白对照组,2、3组分别在基础日粮中添加5.0%、10.0%的复合微生态制剂,试验期为60 d。试验期间测定生产性能和养分表观消化率。结果表明:(1)3组的试验末重和平均日增重分别较1组提高5.57%、31.16%(P<0.05),3组料重比较1组降低18.05%(P<0.05)。(2)3组的粗蛋白质、中性洗涤纤维、酸性洗涤纤维表观消化率较1组分别提高14.23%、19.19%、16.69%(P<0.05),2、3组的粗脂肪、粗灰分、钙、磷的表观消化率均高于1组(P>0.05)。综上,基础日粮中添加10.0%复合微生态制剂可以提高乌骨羊的生长性能和养分表观消化率。 相似文献
11.
复合微生态制剂对断奶仔猪生长性能、腹泻率、免疫性能和肠道菌群的影响 总被引：3，自引：0，他引：3
本试验旨在研究复合微生态制剂对断奶仔猪生长性能、腹泻率、免疫性能和肠道菌群的影响。选取(30±2)日龄平均体重为(8.15±0.05)kg的莱芜黑猪断奶仔猪96头,随机分为4组,每组6个重复(公母各占1/2),每个重复4头猪。Ⅰ组为对照组,饲喂不添加任何益生菌和抗生素的基础饲粮;Ⅱ组为复合微生态制剂组,在基础饲粮中添加1.0‰肽菌素;Ⅲ组为抗生素组,在基础饲粮中添加500 mg/kg硫酸黏杆菌素;Ⅳ组为肽菌素和抗生素混用组,在基础饲粮中添加1.0‰肽菌素的同时添加200 mg/kg的喹乙醇和110 mg/kg的吉他霉素。预试期3 d,正试期28 d。结果表明,1)Ⅱ组平均日增重较Ⅰ、Ⅲ和Ⅳ组分别显著提高了13.16%、15.77%和10.66%(P0.05),F/G分别显著降低了8.54%、12.10%和6.50%(P0.05)。与Ⅰ组相比,Ⅱ、Ⅲ和Ⅳ组均显著降低了仔猪腹泻率(P0.05)。2)与Ⅰ和Ⅲ组相比,Ⅱ组肝脏指数和脾脏指数分别提高了12.13%、24.76%和14.60%、12.45%,血清免疫球蛋白G和免疫球蛋白A含量分别提高了49.73%、37.50%和61.05%、46.67%,且差异均显著(P0.05)。3)与Ⅰ和Ⅲ组相比,Ⅱ组显著降低了胃和十二指肠内容物的p H(P0.05),且显著提高了盲肠和结肠中乳酸杆菌数量(P0.05)。由此可知,本试验条件下,饲粮添加1.0‰复合微生态制剂肽菌素可改善断奶仔猪生长性能,降低腹泻率,促进免疫器官的发育,提高血清中免疫球蛋白含量,增强仔猪免疫力,降低胃和十二指肠内容物p H,改善肠道菌群平衡。 相似文献
12.
本研究旨在探讨在饲粮中添加非淀粉多糖酶和益生素对肉仔鸡生长性能和养分表观代谢率的影响。选用1日龄健康AA+肉仔鸡,采用单因素完全随机化试验设计,试验共设3个处理组,每个处理5个重复,每个重复40只。对照组饲喂基础饲粮,试验1组饲喂基础饲粮+400 mg/kg非淀粉多糖酶,试验2组饲喂基础饲粮+100 mg/kg益生素,试验期6周。结果表明:益生素与对照组相比能显著提高1～42日龄肉仔鸡的日采食量5.26%(P<0.05),分别降低1～21日龄6.43%(P<0.05)和1～42日龄料重比4.57%(P<0.05)。非淀粉多糖酶和益生素能显著提高钙的表观代谢率6.83%(P<0.05)和11.86%(P<0.05),以及磷的表观代谢率11.45%(P<0.05)和16.10%(P<0.05)。由此得出,添加非淀粉多糖酶和益生素对肉鸡生长性能和表观养分代谢率作用有所提高,益生素组好于非淀粉多糖组。 相似文献
13.
Effects of dietary lysozyme levels on growth performance,intestinal morphology,non‐specific immunity and mRNA expression in weanling piglets 
下载免费PDF全文
下载免费PDF全文 Jiatao Zhu Xiaoxue Pang Zhengfeng Fang Yan Lin Lianqiang Che Shengyu Xu Jian Li Yiming Huang Xiang Su De Wu 《Animal Science Journal》2016,87(3):411-418
The aim of the present study was to determine the effect of dietary lysozyme levels on growth performance, gut health and non‐specific immunity of weanling piglets. A total of 150 weanling piglets were allocated to six treatments. The piglets were fed the same basel diet supplemented with 0, 30, 60, 90 and 120 mg/kg lysozyme as well as antibiotics for 28 days. From day 14 to day 28 of dietary treatment, piglets fed 90 mg/kg lysozyme had greater average daily gain than piglets fed control diet. During the whole experimental period, piglets fed 120 mg/kg lysozyme tended to have greater average daily gain than piglets fed control diet. Compared with piglets fed control diet, piglets fed diets containing antibiotics and 90 mg/kg lysozyme had greater villus height to crypt depth ratio in duodenum and jejunum. Additionally, dietary supplementation of 60 and 90 mg/kg lysozyme as well as antibiotics enhanced the phagocytic activity of peritoneal macrophages in piglets. In conclusion, dietary lysozyme can accelerate the growth of weanling piglets by improving gut health and non‐specific immunity and supplementing 90 mg/kg lysozyme is as effective as antibiotics (20 mg/kg colistin sulphate + 50 mg/kg kitasamycin) in improving the growth performance of weanling piglets. 相似文献
14.
本试验旨在研究饲粮中添加植物乳杆菌(Lactobacillus plantarum)和非淀粉多糖(NSP)复合酶对断奶仔猪生长性能、粪便微生物菌群及血清指标的影响,从而达到代替抗生素的目的。试验采用单因素完全随机设计,选择28日龄健康断奶仔猪192头,平均体重为(7.15±0.36)kg,随机分为4个组,每组6个重复,每个重复8头猪。对照组(CT组)饲喂在基础饲粮中添加40 mg/kg杆菌肽锌的饲粮;试验组分别饲喂在基础饲粮中添加1 g/kg植物乳杆菌(PT组)、1 g/kg NSP复合酶(ZT组)、1 g/kg植物乳杆菌+1 g/kg NSP复合酶(PZT组)的饲粮。试验期35 d。结果表明:1)各组间断奶仔猪的试验末重、平均日增重、平均日采食量及料重比均无显著差异(P0.05)。2)各组间断奶仔猪粪便中乳酸菌数量、大肠杆菌数量及乳酸菌/大肠杆菌均无显著差异(P0.05)。但与对照组相比,PZT组断奶仔猪粪便中乳酸菌数量和乳酸菌/大肠杆菌有增加趋势(0.05≤P0.10),大肠杆菌数量有降低趋势(0.05≤P0.10)。3)各组间断奶仔猪的血清生化指标、免疫指标均无显著差异(P0.05)。由此可知,饲粮中复合添加植物乳杆菌和NSP复合酶可促进肠道菌群平衡,有益于仔猪健康生长,从而达到替代抗生素的目的。 相似文献
15.
试验选用２００只１日龄海蓝褐蛋雏鸡,分为６个组,每组３０只,对照组饲喂基础日粮,试验组在基础日粮的基础上分别添加１０７ ｃｆｕ／ｇ益生素,３００ ｍｇ／ｋｇ黄芪多糖,３０ ｍｇ／ｋｇ酵母多糖,５×１０６ ｃｆｕ／ｇ益生素＋１５０ ｍｇ黄芪多糖和５×１０６ ｃｆｕ／ｇ益生素＋１５ ｍｇ酵母多糖,试验周期５０ d。试验结果表明：益生素和多糖均能提高雏鸡的生长性能,免疫器官指数和抗体滴度和血清溶菌酶含量,而以益生素＋黄芪多糖组效果最好,而益生素＋酵母多糖组在本次试验中则没有体现出复配优势。 相似文献
16.
This experiment was conducted to study the effects of antimicrobial peptide cecropin on production performance,immune function and serum biological parameters of weaner piglets.A total of 240 weaner hybrid piglets （Landrace×Large White×Duroc） with average body weight （8.35±0.12）kg were randomly divided into 4 treatments with 6 replicates of 10 each.The four treatments were control group （fed a basal diet）,antibiotics group （fed basal diet＋140 mg/kg 50% kitasamycin＋100 mg/kg olaquindox ＋600 mg/kg 10% colistin sulfate）,antimicrobial peptide group （fed basal diet＋350 mg/kg antimicrobial peptide cecropin）,compatibility group （antibiotics + antibacterial peptide group）（fed basal diet＋250 mg/kg antimicrobial peptide cecropin＋50 mg/kg olaquindox ＋200 mg/kg 10% colistin sulfate）,each group was half male and half female.The pre-test period lasted for 7 days,the trial period lasted for 34 days.The results showed that compared with control group,the average daily gain in compatibility group was significantly increased （P＜0.05）,the average daily feed intake in antibiotic group and antimicrobial peptide group was significantly decreased （P＜0.05）,the feed conversion ratio and diarrhea rate in all three experimental groups were significantly decreased （P＜0.05）.The antibody blocking rate and serum IgG,IgA contents in antimicrobial peptide group and compatibility group were significantly increased （P＜0.05）,the serum urea nitrogen and blood sugar contents in antimicrobial peptide group and compatibility group were significantly decreased （P＜0.05）,but the serum total protein and albumin contents were significantly increased （P＜0.05）.In conclusion,dietary supplementation appropriate level of antimicrobial peptide cecropin could replace part of the antibiotics,and adding high dose of antimicrobial peptide cecropin could replace antibiotics used in feed completely. 相似文献
17.
复合益生素对仔猪免疫功能的影响 总被引：3，自引：2，他引：1
为了解复合益生素(嗜酸乳杆菌+干酵母)对仔猪免疫功能的影响。选取60头日龄相同、体重相近的初产仔猪,分为复合益生素组(基础日粮+0.2 g/kg干酵母+0.4 g/kg嗜酸乳杆菌液)、嗜酸乳杆菌组(基础日粮+0.4 g/kg嗜酸乳杆菌液)、鱼肝油乳组(基础日粮+10 mL/kg鱼肝油乳)、基础对照组(基础日粮)4组,15头/组,用ELISA试剂盒检测不同日龄、不同组别仔猪外周血总IgG、IL-2、IL-5和IFN-γ的含量变化。结果显示,从15~55日龄添加复合益生素增加总IgG、IL-2、IL-5和IFN-γ的量分别为102.76％、62.63％、53.71％和33.45％,明显高于其它组。可见,复合益生素能够更好的增强仔猪的免疫功能。 相似文献
18.
The objective of this study was to determine possible synergistic effects of supplementing one of three fungal phytases: Aspergillus fumitagus PhyA (AFP),A. niger PhyA (ANP), or Peniophora lyci phytase (PLP) with an Escherichia coli AppA phytase (EP) in diets for pigs. Three experiments, each lasting for 4 wk, were conducted with a total of 106 weanling pigs (5 wk old). The corn-soybean meal basal diet (BD) contained no supplemental inorganic P. In Exp. 1, 35 pigs (8.6 +/- 1.0 kg BW) were fed (as-fed basis) BD + AFP at 750 U/ kg of feed, BD + inorganic P (0.2% P), or BD + PLP at 500, 750, or 1,000 U/kg feed. Pigs fed BD + AFP or BD + 0.2% P had higher (P < 0.05) plasma inorganic P concentrations than those fed BD + PLP at the end of the trial (wk 4). In Exp. 2, 35 pigs (8.1 +/- 0.9 kg BW) were fed BD + AFP, EP, PLP, a 1:1 mix of AFP:EP, or a 1:1 mix of PLP:EP at 500 U/kg. Pigs fed the AFP:EP mixture had growth performance and plasma measures similar to those fed either enzyme alone. Pigs fed the PLP:EP mixture had lower (P < 0.05) plasma alkaline phosphatase activity than those fed BD + PLP. Pigs fed BD + PLP had lower (P < 0.05) plasma inorganic P concentrations than pigs fed BD + EP, and higher (P < 0.05) plasma alkaline phosphatase activity than all other groups at wk 4. In Exp. 3, 36 pigs (9.1 +/- 1.2 kg BW) were fed BD + ANP, EP, or a 1:1 mix of ANP:EP at 500 U/kg feed. Pigs fed the two enzymes together had lower (P < 0.05) plasma inorganic P concentration than those fed BD + EP and lower (P < 0.05) plasma alkaline phosphatase activity than pigs fed BD + ANP at wk 4. In conclusion, although the four phytases showed different effects on plasma P status of weanling pigs, there was no synergistic effect between any of the three fungal phytases and the bacterial phytase on the plasma measures or growth performance under the conditions of the present study. 相似文献
19.
本试验旨在研究发酵床饲养模式下日粮中添加地衣芽孢杆菌对仔猪生长性能、胰腺和小肠黏膜消化酶活性及肠道主要菌群数量的影响。选用108头体重13kg左右的35日龄健康苏钟猪,随机分为3组,每组3个重复,每个重复12头,分别饲喂基础日粮(对照组)、基础日粮+40mg/kg杆菌肽锌+20mg/kg硫酸黏杆菌素(抗生素组)、基础日粮+300mg/kg地衣芽孢杆菌(益生菌组)的试验日粮。预试期7d,正试期52d。结果表明:1与对照组相比,日粮中添加地衣芽孢杆菌能够在一定程度上提高仔猪平均日增重、平均日采食量,降低料重比,但各组间差异均不显著(P0.05)。2与对照组相比,日粮中添加地衣芽孢杆菌能够极显著提高仔猪胰腺中淀粉酶活性、十二指肠黏膜中麦芽糖酶活性和空肠黏膜中乳糖酶活性(P0.01),十二指肠黏膜和空肠黏膜中蔗糖酶活性显著提高(P0.05)。3与对照组相比,日粮中添加地衣芽孢杆菌能够显著提高仔猪盲肠芽孢杆菌数量(P0.05);乳酸杆菌数量较对照组提高4.09%,大肠杆菌数量较对照组降低4.86%,但均未达到显著水平(P0.05)。综上所述,在本试验条件下,日粮中添加300mg/kg地衣芽孢杆菌能够提高发酵床饲养仔猪胰腺、小肠黏膜消化酶活性及盲肠芽孢杆菌数量,同时仔猪生长性能也在一定程度上有所改善。 相似文献
20.
Jiang SZ Yang ZB Yang WR Wang SJ Wang Y Broomhead J Johnston SL Chi F 《Journal of animal physiology and animal nutrition》2012,96(6):1147-1156
The objectives of this study were to investigate the toxicity of zearalenone (ZEA) on hepatonephric organs, serum metabolites and oxidative stress of piglets and to evaluate the efficacy of Calibrin‐Z (CAZ) in preventing ZEA‐induced adverse effects. The experiment was conducted for 22 days using 36 piglets weaned at 21 days of age (Landrace × Yorkshire × Duroc, 18 females and 18 males; 8.84 ± 0.21 kg average body weight). Piglets of each gender were randomly allocated to the following six dietary treatments: (i) Control (basal diet only); (ii) Control + 1 g/kg CAZ; (iii) Control + 1 mg/kg ZEA; (iv) Control + 1 mg/kg ZEA + 1 g/kg CAZ; (v) Control + 1 mg/kg ZEA + 2 g/kg CAZ; (vi) Control + 1 mg/kg ZEA + 4 g/kg CAZ. Piglets were housed and fed individually for the entire experimental period. Blood samples were taken, and piglets were killed at the end of the experiment to obtain organs for physiological assessment. Results showed that piglets fed the ZEA‐contaminated diet had increased (p < 0.05) activities of aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, gamma‐glutamyltransferase (GGT), creatine kinase and cholinesterase, concentrations of urea, and creatinine in serum, and malondialdehyde (MDA) in serum and liver. Pigs fed the ZEA‐only diet also showed reductions in serum (p < 0.05) globulin, triglycerides and high‐density lipoproteins (HDL), and reductions in total superoxide dismutase (TSOD) and glutathione peroxidase (GSHPx) activity in both serum and liver. Supplementation of CAZ at the dosages of 1–4 g/kg to the diet containing 1.05 mg/kg ZEA linearly increased (p < 0.05) concentrations of triglycerides and HDL in serum, activity of TSOD and GSHPx in serum and liver, but linearly reduced (p < 0.05) all tested serum enzymes and lowered (p < 0.05) the elevated concentrations of urea, and creatinine in serum, and MDA in serum and liver caused by dietary ZEA. Piglets fed the ZEA‐contaminated diet showed increased (p < 0.05) relative weight of liver and kidney compared with the control, whereas only numerical improvement on relative weight of liver and kidney was observed with simultaneous addition of CAZ at 4 g/kg diet and ZEA. However, feeding the diet with CAZ alone at 1 g/kg had no impact on any of the measured parameters when compared to the control. It is suggested that feeding ZEA at 1.05 mg/kg exerted a deleterious effect on piglets, which was totally or partly ameliorated by dietary supplementation of CAZ at concentrations between 1 and 4 g/kg diet. 相似文献