加酶益生素饲喂断奶仔猪效果试验

本试验将32头断奶八眉猪三元仔猪随机分为2组,试验组日粮中添加0.1％的加酶益生素,对照组不添加加酶益生素,饲喂30d.结果试验组日增重586g,对照组日增重547g,经t检验差异显著,(P＜0.05);试验组料肉比为1.74:1,比对照组降低6.95％,而且试验组的仔猪腹泻发病率比对照组降低18.75％,试验组仔猪比对照组多获利17.64元/头.(仔猪30元/kg).     

肉鸭日粮中添加加酶益生素的饲喂效果试验

选用400只1日龄樱桃谷商品肉鸭,随机分成两组,试验组的日粮中添加0.2%的加酶益生素,以探讨在肉鸭日粮中添加加酶益生素对其生长、死亡率、饲料转化率和经济效益的影响.试验结果表明,加酶益生素能促进肉鸭增重、提高饲料报酬、降低死亡率和提高经济效益.     

肉鸭日粮中添加加酶益生素的饲喂效果试验

选用400只1日龄樱桃谷商品肉鸭，随机分成两组，试验组的日粮中添加0．2％的加酶益生素，以探讨在肉鸭日粮中添加酶益生素对其生长、死亡率、饲料转化率和经济效益的影响。试验结果表明，加酶益生素能促进肉鸭增重、提高饲料报酬、降低死亡率和提高经济效益。     

日粮蛋白质与赖氨酸水平对断奶仔猪益生素添加效果的影响

为探讨不同日粮养分浓度对益生素添加效果的影响 ,将 4 8头 2 8日龄断奶仔猪随机均分 4组 ,以常规日粮为对照组 ,经 2 8d试验 ,结果发现 :益生素 (0 .1% )在常规日粮中添加 ,能提高断奶仔猪 9.0 3%的增重速度 (P<0 .0 5 )和 6 .3%的饲料转化率 ;而在低蛋白质日粮 (低赖氨酸水平和理想赖氨酸水平 )中的添加 ,能比对照组分别提高 16 .4 3%和 17.97%的增重速度(P<0 .0 1) ,以及 11.2 %和 11.7%的饲料转化率 ,腹泻率也比对照组有明显降低。     

加酶益生素添加时间对哺乳断奶仔猪日增重和腹泻率的影响

在自然条件下,随着外界微生物进入胃肠道,不同种属的微生物经过生物演化最终形成相对稳定的胃肠道微生物区系,微生物区系一旦建立,将终生维持和稳定.在仔猪微生物区系建立前,以先人为主策略接种有益微生物,有助于建立正常的微生物区系,排除或控制潜在的病原体.     

加酶益生素饲喂断奶仔猪效果试验

为研究加酶益生素对断奶仔猪的影响,笔者于2012年3—5月在青海省互助县八眉猪保种场进行断奶仔猪饲喂效果试验。1试验设计选择日龄、体重相近的长×杜×八(八眉猪)杂种仔猪32头,随机分成2组,每组16头,公母各半。对照组饲喂基础饲粮,试验组在基础饲粮中添加0.1%     

断奶仔猪日粮中添加"改良型"益生素的试验效果观察

试验在断奶仔猪日粮中按0.2%的比例添加"改良型"益生素,在按日常管理条件下,经试验发现组间增重差异明显(P>0.05),证实添加益生素在生产中效益明显,具有一定的实践指导意义.     

高锌日粮中添加抗生素、益生素对仔猪断奶过渡期的影响

本实验研究在断奶仔猪日粮中添加抗生素、益生素的应用效果。 3个试验分别在基础日粮上添加卡巴氧 70×10 -6、 SPA 2 5 0× 10 -6、复合益生素 10 0 0× 10 -6。结果表明 :在断奶仔猪过渡期饲喂抗生素、复合益生素显著减少了仔猪腹泻 ,提高了经济效益。饲喂复合益生素组对仔猪生长发育影响最为显著 ,经济效益明显增加     

日粮中添加不同水平的Lactogene对断奶仔猪生产性能的影响

选用４８ 头３５ 日龄断奶仔猪于断奶后３ ～４ 周内研究在日粮中添加不同水平的Ｌａｃｔｏｇｅｎｅ 对仔猪生产性能的影响。Ｌａｃｔｏｇｅｎｅ 的添加量分别为５５ ×１０５ ，７０ ×１０５ ，８５ ×１０５ 和１０ ×１０４ 。结果表明：Ｌａｃｔｏｇｅｎｅ 不同添加水平对仔猪平均日增重、平均日采食量及饲料转化效率影响差异不显著（Ｐ＞ ０－０５） 。与其它处理组相比，添加８５ ×１０５Ｌａｃｔｏｇｅｎｅ 组的平均日采食量最大，平均日增重以及饲料转化效率也最高。     

益生素对断奶仔猪生产性能影响的研究

选用体重和断奶日龄相近的杜×长×大三元杂交断奶仔猪为试验对象,研究益生素对断奶仔猪生产性能等的影响。对照组饲喂基础日粮,试验组Ⅰ饲喂基础日粮+0.1%益生素制剂,试验组Ⅱ饲喂基础日粮+0.2%益生素制剂。试验结果表明:在平均日增重方面,试验组Ⅱ与对照组和试验组Ⅰ相比,均有极显著(P<0.01)的提高,分别提高了18.48%和11.49%,试验组Ⅰ与对照组相比,也有显著(P<0.05)提高;在料肉比方面,试验组Ⅱ比对照组降低了9.71%,试验组Ⅰ比对照组降低了2.86%;在腹泻率方面,试验组Ⅱ比对照组降低了69.83%,试验组Ⅰ比对照组降低了46.71%;在经济效益方面,每千克增重的饲料成本与对照组相比,试验组Ⅱ和试验组Ⅰ分别降低了2.34%和8.57%。     

日粮中添加复合酶制剂对断乳仔猪生长性能的影响

选取54头7～8 kg健康的"杜长大"断乳仔猪作为试验动物,根据体重相近、公母各半、随机分配的原则分为对照组和试验组,每组设3重复,每个重复9头,探讨添加复合酶制剂对仔猪生长性能和腹泻率的影响。试验组日粮中添加0.5 g/kg泛亚太复合酶制剂后,仔猪的日增重提高,料重比降低,但差异不显著(P>0.05);并可降低仔猪腹泻率和饲料成本。结果表明,在仔猪日粮中添加0.5 g/kg泛亚太复合酶制剂可提高仔猪的生长性能,提高经济效益。     

半胱胺盐酸盐在断奶仔猪日粮中的效果

为确定半胱胺盐酸盐在断奶仔猪生长性能上的功效,试验在21日龄断奶仔猪日粮中添加3个水平(0.03%、0.05%和0.07%)的半胱胺盐酸盐(强化保生灵)进行35d试验(21~56日龄)。总计192头杜×长×大三元杂交仔猪,平均体质量6.3kg,按性别和遗传平衡随机分为4个处理,每个处理3个重复,每重复12头猪。试验结果为正效果,与对照组相比,试验组的生产性能指标,如总增质量、日增质量、均匀度、饲料报酬、每千克增质量饲料成本及经济效益回报等都有改善。含强化保生灵的日粮处理对日增质量、饲料报酬和均匀度有极显著的线性效果。在断奶仔猪日粮中添加0.07%强化保生灵可获得最好的生产性能及最高的经济效益。     

The effect of PHA-lectins and diet composition on performance and intestinal development in weaning piglets

Anti-nutritional factors such as PHA-lectins (phytohaemagglutinin) in piglet diets can compromise piglet's performance and health by gut damage, which is especially important at weaning. Two trials were conducted to investigate the effect of PHA and fermentable carbohydrates on performance, gut morphology, physiology and microbiology in piglets weaned at 26 days.

We studied dietary PHA as a model to standardize gut damage and its effect on intestinal morphology and microbiology in piglets until 2 weeks post weaning. In general, significant lower values were observed on day 7 compared to day 14 post weaning (d7 vs. d14: 358 vs. 442 μm villus height; 42.1 vs. 108.7 U/g protein sucrase-isomaltase), indicating gut maturation. We observed very few changes between day of weaning to day 7 post weaning, lactobacilli counts being most affected (8.9, 6.9, 7.4 cfu/g for d0, d7, d14). Apart from these marked time effects the effect of PHA was negligible and thus a less suitable model to standardize gut damage in this setup.

Furthermore we studied the effect of PHA in combination with rapid or slow fermentable carbohydrates (CHO) on performance and physiological parameters. We observed a dramatic effect on performance (ADG g/d: 245 no PHA + low CHO, 111 PHA + low CHO, 132 PHA + rapid CHO, 105 PHA + slow CHO), which was less clearly reflected in the physiological parameters.     

益康XP对早期断奶仔猪生长影响的研究

<正>1材料与方法1.1试验设计采用2×2析因法,即设低营养+抗生素组(低营养对照组)、低营养+益康XP+抗生素组、高营养+抗生素组(高营养对照组)、高营养+益康XP+抗生素组4个处     

微生态制剂对仔猪断奶应激的影响

<正>应激反应首先是由加拿大内分泌学家HansSe-lye提出的。应激反应是机体受到强烈刺激而处于"紧急状态"时,出现的一系列神经内分泌反应,并由此引起各种机能和代谢改变,以提高机体对外环境的适应能力和维持内环境的相对稳定。应激反应过强和持续时间过久,对机体有害,会出现病理性变化。     

断奶应激对仔猪红细胞免疫功能的影响研究

为了研究早期断奶应激对仔猪红细胞免疫功能的影响,试验采用同窝杜×(大×长)三元杂交健康仔猪12只,分别于断奶前3天、断奶后3天及断奶后2周进行红细胞受体C3b花环试验、免疫复合物IC花环试验及血常规检验,观察断奶应激对仔猪红细胞免疫功能、红细胞数量及血红蛋白含量影响的动态变化。结果表明:断奶应激导致仔猪红细胞C3b受体花环率(C3bRR率)、红细胞总数和血红蛋白含量降低,IC花环率(ICR率)的变化明显。说明断奶应激可导致仔猪红细胞免疫功能下降,红细胞免疫功能低的仔猪更容易发生(断奶)应激性腹泻。     

Antibiotic-free weaning of piglets

In a problem herd the losses by E. coli-infection of weaning piglets could not be reduced neither applicating an oral vaccine before 4-2 weeks to weaning nor via feed of antibiotics or sulfonamides. Therefore many feeding trials were carried out by 1247 weaning piglets which are feeded with high raw fibre rations (wheatbran coarse grained, strawmeal) beginning 2 weeks before weaning till 3 weeks afterwards. The most effective feeding additive was 25-30% wheatbran. In fact of this results the diarrhea, a problem in many herds infected with a lot of EEC (08, 045, 0138, 0139, 0141, 0147 and 0149) could be reduced effectively. Light cases of diarrhea during the trials could be stopped by two applications of TMQ (20 mg Terramycin/kg BW). Based on these results the use of the supplementing wheatbran to the normal feed during the weaning period can be recommended for such problem herds.     

仔猪隔离断奶技术研究

为探究仔猪早期隔离断奶技术在集约化养猪场养殖中的实际应用及其效果等,我们在绵阳市某猪场进行了长时间、科学的试验探究.本文全面介绍了试验的主要方法、过程和结果等,并对其中所得出来的结果作准确分析与总结.结果表明,仔猪早期隔离断奶技术能有效控制和清除疫病,并提高猪群的健康水平和生产效率,最终增加经济效益.     

The influence of polyphenol rich apple pomace or red-wine pomace diet on the gut morphology in weaning piglets

Alternative food ingredients, e.g. secondary plant compounds, are discussed to have beneficial effects and improve gut health. In this study, the effect of three different diets - normal piglets starter without additives, with apple pomace or with red-wine pomace - on the intestinal morphology was investigated from 3 days prior to weaning to 4 weeks post-weaning. At five time points, six piglets from each treatment group were slaughtered; at first time point only six animals from control group were slaughtered. Villus height, crypt depth and breadth of villi and crypts were determined in the jejunum, ileum and colon in 78 piglets. Additionally, the area of the Peyer's patches in the ileum was measured. In jejunum (p < 0.01) and ileum (p < 0.001) the villus length in the control group decreased after weaning but increased over the entire feeding experiment (p < 0.001). In the two-pomace groups, no decrease was measured after weaning. In jejunum, an increase in villi breadth occurred, 73% in the control group and approximately 10% in both treatment groups. A 35% increase was found in the ileum in all groups. Peyer's patches area increased approximately 21% in the control group over 26 days of treatment, whereas in other groups no significant differences were found. Different polyphenol rich pomaces have diverse effects in the gastrointestinal tract. Red-wine pomace has an inhibitory effect on the jejunum villi growth, whereas apple and red-wine pomace have stimulating effect on crypt size in piglet colon. Apple and red-wine pomace can reduce the GALT activation via the Peyer's patches in the ileum. In conclusion, the flavanoids rich feeding regimen showed positive effects on villi morphology, GALT activation and can improve pig health.