单宁与动物胃肠道微生物的作用及其机制

单宁是一类广泛分布于植物中的多酚类化合物.饲料中的单宁易与蛋白质、糖类、酶类、金属离子等结合,生成不易被动物消化吸收的物质,使其具有抗营养作用.本文主要对单宁的分布与理化性质、不同动物体内分离选育的单宁抗性菌或单宁降解菌作一综述,并从单宁能抑制多种酶的活性、阻断细胞膜电子链的传送和氧化磷酸化以及剥夺微生物细胞金属酶的金...     

猪只肠道中微生物的发展与益生菌的应用

一．猪只胃肠道的结构与微生物发展的关系 猪只不同部位的胃肠道有不同的构造与功能，以提供消化吸收所需要之最适当条件。借着胃的排空将食糜送至小肠。食糜在小肠近端的流动速度比远程小肠来的快。日粮成份、胃、小肠、胰、胆的分泌物决定胃与小肠上半部食糜的组成份。当食糜进入肠道后段时，其流速与氧含量即降低且其组成份会受到消化、分泌与微生物作用而改变。     

绵羊胃肠炎的诊治

胃肠炎是羊的一种常见病、多发病,是胃肠道粘膜及深层组织的出血性或坏死性炎症。临床特征有严重的胃肠道功能障碍和不同程度的自体中毒。该病对养羊业危害极大,且造成相当大的经济损失。     

吉他霉素肠溶颗粒剂的溶出度问题解析

众所周知，口服固体药物制剂比如片剂、颗粒剂后，药物在胃肠道内经历崩解、分散、溶出过程才可通过上皮细胞膜吸收。如果为水溶性药物，其崩解后可立即进入分散、溶出过程，能够被迅速吸收；对难溶性药物而言，药物从固体制剂中溶出的速度很慢，尽管崩解分散过程很快，其吸收过程往往受到药物溶出速度的限制，溶出是难溶性药物吸收的限速过程。     

微生物饲料添加剂应用研究(四)微生物添加剂对蛋鸡生产性能及细菌性疾病治疗效果的影响

禽类消化系统简单，消化道短且抗病力差，易感染疾病。微生态饲料添加剂主要通过改善寄主动物肠道微生物平衡发挥有益作用。健康动物的消化道内栖息着多种微生物，他们作为一个体系存在，彼此相互依存、相互制约，维持着肠道内微生态平衡和动物机体健康；但当动物受饲料变换、运输或疾病等影响引起应激时，胃肠道内微生物群落就会发生改变，引起消化道菌群失调，微生态平衡遭到破坏，就会出现一些病理性的变化症状。因此，饲喂有益微生物，能够调节胃肠道微生物的平衡和维持动物健康，提高机体免疫力、抗应激能力和生产性能，并对一些病毒性细菌引起的疾病具有良好的治疗效果。     

自然疗法治便秘

老年人由于生理功能减退，腹肌与胃肠道肌力下降，肠蠕动减慢，加上活动量减少，常常引发便秘。     

Preparation of Pectin/Chitosan Synbiotic Microcapsules and Its Study on Simulated Gastrointestinal Environments and Storage Stability

Pediococcus acidilactici and inulin were used as wall cores,with pectin and chitosan as the shell material.The conditions of microencapsulation were optimized by analyzing the embedding rate,particle morphology,the mechanical strength,gastrointestinal tolerance in vitro and storage performance.The experimental group was divided into three groups:Free Pediococcus acidilactici group (PA),microcapsule group made by embedding Pediococcus acidilactici alone (PC(PA)MCs),synbiotic microcapsule group made by embedding inulin and Pediococcus acidilactici (PC(PA-I)MCs).The results showed that the appearance,particle size,mechanical strength and embedding rate of microcapsules were better when the mass concentration of pectin was 5 g/100 mL,the content of inulin was 25 mg/mL and the mass concentration of chitosan was 0.8 g/100 mL.Through the gastrointestinal tolerance test in vitro, it was found that PC(PA-I)MCs group was relatively stable in the artificial gastric juice in vitro (P<0.05).At the same time,it began to release rapidly in the artificial intestinal fluid in vitro at 30 min and it was almost completely disintegrated after 2 h.It was found that the cell survival rate of PA group decreased significantly at cold and room temperature through the storage test for 4 weeks.While the cell survival rate of PC(PA-I)MCs group decreased slightly.And the cell survival rate of PC(PA-I)MCs group was higher than that of PC(PA)MCs group (P>0.05).At room temperature,the cell survival rate of PC(PA-I)MCs group was higher than that of PC(PA)MCs group (P>0.05).In summary,pectin/chitosan microcapsules with inulin as probiotics had a better embedding effect on Pediococcus acidilactici.     

宝宝常吃粗粮好处多

所谓粗粮,是指除精白米、富强粉或标准粉以外的谷类食物,如小米、玉米、高粱米等.小儿从加辅食后4-6个月开始,就可以考虑吃点粗粮了.     

僵猪脱僵有巧法

<正>1.驱虫清胃。按猪每千克体重用敌百虫0.017克一次内服,每天服1次,连服3天。驱虫2天后,再取生石灰1千克溶于5千克水中,取上清液拌料喂猪,每天1次,连用5天,以清除胃肠道里的虫卵和各种毒素。     

秋季慎防肉鸡肠道疾病

1 肉鸡秋季腹泻的原因 肉鸡秋季腹泻的内因是酶在肉鸡胃肠道内的发育成熟期活性较差,但营养需要相对较高,肠道负担重,造成胃肠调节机能较差,免疫功能也相对不够成熟;外因主要是由于气温忽冷忽热,雨水多,肉鸡因此饮用污水的机率也加大,致病原微生物大量繁殖,使肉鸡在秋季更易患上肠道疾病.