Rearing conditions affected responses of weaned pigs to organic acids showing a positive effect on digestibility,microflora and immunity          下载免费PDF全文

Yalin Zhang  Yumo Song  Xiaoling Zhang  Yan Lin  Lianqiang Che  Shengyu Xu  De. Wu  Bai Xue  Zhengfeng Fang 《Animal Science Journal》2016,87(10):1267-1280

Three experiments were conducted to assess the response of weaned pigs to organic acid SF3, which contains 34% calcium formate, 16% calcium lactate, 7% citric acid and 13% medium chain fatty acids. Dietary treatments had no effect on growth performance of piglets (21‐day weaning) fed the commercial prestart diet for 1 week before receiving the experimental diets supplemented with SF3 at 0, 3 or 5 g/kg diet (Exp. 1), whereas diarrhea frequency averaged across a week was decreased by SF3 supplementation (5 g/kg diet) in piglets fed the experimental diets immediately after weaning (Exp. 2). In Exp. 3, piglets (28‐day weaning) were fed the control (containing pure colistin sulfate and enramycin, respectively, at 20 mg/kg diet) for 1 week and then were fed the control or SF3‐supplemented (5 g/kg diet) diet for 2 weeks. The SF3‐fed piglets had greater apparent ileal digestibility of calcium and dry matter, while also demonstrating greater overall gross energy, up‐regulated jejunal expression of sodium‐glucose cotransporter‐1 and transforming growth factor‐β, down‐regulated jejunal expression of tumor necrosis factor (TNF)‐α, higher ileal Lactobacillus, with lower total bacteria content, lower plasma TNF‐α but higher IgG levels than the control‐fed piglets. Collectively, SF3 consumption improved diarrhea resistance of weaned pigs by improving nutrient digestibility, piglet immunity and intestinal bacteria profile. © 2016 Japanese Society of Animal Science  相似文献   

Development of the faecal microbiota in foals          下载免费PDF全文

M. C. Costa  H. R. Stämpfli  E. Allen‐Vercoe  J. S. Weese 《Equine veterinary journal》2016,48(6):681-688

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授粉技术和单株留瓜数对鄂丝瓜1号制种效果的影响     

黄树苹  谈杰  张敏  王春丽  陈霞  徐长城  谈太明 《长江蔬菜》2016,(8)

以鄂丝瓜1号的父、母本为试材,以父本当天上午开放的雄花为花粉来源,研究了授粉时间、花粉供给量和单株留瓜数对种子产量和质量的影响。试验结果表明,母本雌花开放的当天上午和开花前1 d上午均可作为鄂丝瓜1号制种的适宜授粉时间;以1朵雄花为3朵雌花进行授粉为鄂丝瓜1号制种的首选花粉供给量;鄂丝瓜1号制种中,1株母本可以留5~6个种瓜。  相似文献   

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

Sehm J  Lindermayer H  Dummer C  Treutter D  Pfaffl MW 《Journal of animal physiology and animal nutrition》2007,91(7-8):289-296

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.  相似文献   

苏氨酸和异亮氨酸对皖西白鹅屠宰性能、器官指数及肠道形态结构、消化酶活性、抗氧化和免疫指标的影响     

丁元翠方素庭徐廉竹张锋燕胡倩倩李升和任曼 《动物营养学报》2023,(4):2336-2348

本试验旨在研究苏氨酸和异亮氨酸对皖西白鹅屠宰性能、器官指数及肠道形态结构、消化酶活性、抗氧化和免疫指标的影响。选取30日龄体重相近的皖西白鹅180只,随机分为3组,每组3个重复,每个重复20只。对照组饲喂基础饲粮,苏氨酸组在基础饲粮中添加2.0 g/kg的L-苏氨酸,异亮氨酸组在基础饲粮中添加2.5 g/kg的L-异亮氨酸。试验期60 d。结果表明：1）各组之间90日龄屠宰性能和器官指数无显著差异（P>0.05）。2）异亮氨酸组60日龄十二指肠和空肠绒毛高度、隐窝深度显著或极显著高于对照组（P<0.05或P<0.01）,苏氨酸组60日龄十二指肠、空肠和回肠隐窝深度及90日龄十二指肠和回肠绒毛高度显著或极显著高于对照组（P<0.05或P<0.01）。3）苏氨酸组和异亮氨酸组60、90日龄十二指肠胰蛋白酶活性极显著高于对照组（P<0.01）,苏氨酸组60、90日龄十二指肠麦芽糖酶活性及90日龄空肠淀粉酶、乳糖酶活性显著或极显著高于对照组（P<0.05或P<0.01）。4）异亮氨酸组60日龄空肠总抗氧化能力显著高于对照组和苏氨酸组（P<0...  相似文献   

Hypoxia-targeting therapy for intestinal T-cell lymphoma in dogs: Preclinical study using 3D in vitro models     

Hiroki Yamazaki  Toshiyuki Tanaka  Hidetaka Nishida  Shingo Hatoya  Hideo Akiyoshi 《Veterinary and comparative oncology》2023,21(1):12-19

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棕榈粕替代部分玉米对藏羊母羊小肠形态发育、消化酶活性及抗氧化功能的影响     

周力  侯生珍  王志有  杨葆春  韩丽娟  桂林生 《草业学报》2023,32(3):118-127

试验旨在探究精料补充料中使用不同比例棕榈粕替代玉米对藏羊母羊肠道组织形态学、消化酶活性、pH、脂多糖以及抗氧化能力的影响。选取初始体重相近且健康的2～3月龄高原型藏羊母羊120只,随机分为4组,每组30只,每组6个重复,每个重复5只母羊,分别饲喂0%、15%、18%和21%水平的棕榈粕替代精料中玉米。试验期97d。结果显示：1)0%组与15%组间小肠各段的绒毛高度、绒毛宽度、隐窝深度、黏膜厚度以及绒毛高度/隐窝深度差异均不显著（P>0.05）;2)0%组空肠的α-淀粉酶、纤维素酶、脂肪酶及糜蛋白酶显著或极显著小于15%组（P<0.05或P<0.01）;3)0%组空肠的谷胱甘肽过氧化物酶、过氧化氢酶活性显著低于15%组与18%组（P<0.05）,相较于21%组差异不显著（P>0.05）;4)18%组与21%组空肠的脂多糖含量显著或极显著高于0%组（P<0.05或P<0.01）,与15%组相比差异不显著（P>0.05）。由此可见,棕榈粕可替代部分玉米饲喂藏羊母羊,推荐替代玉米的比例为15%。  相似文献   

高雷诺数对无量纲参数的影响     

赵新顺  舒歌群  刘书亮  户东 《拖拉机与农用运输车》2006,33(1):44-46,49

研究了高雷诺数对气体滚流强度和流量系数的影响。试验表明,气门升程和气道压差小时,难以形成充分发展的湍流,随着气门升程的增大,无量纲滚流强度和流量系数呈上升趋势,并且波动较大;充分发展时,可压缩气体的滚流强度和流量系数恒定不变,不可压缩气体的滚流强度比真实值偏大,而流量系数比真实值偏小,误差大小只与压力比有关,并随着压力比的增大而增大。  相似文献   

水通道蛋白在调节肠道健康中的作用     

朱翠  白银山  陈庄  蒋宗勇 《动物营养学报》2016,(4):961-967

水通道蛋白是一类可以高效选择性转运水分子的细胞膜通道蛋白,广泛分布于人和哺乳动物的胃肠道组织中,在机体液体转运和消化生理中发挥重要作用。本文总结了水通道蛋白的结构、分类及其在人、鼠类和仔猪胃肠道系统的表达和分布情况,并阐述了水通道蛋白与腹泻、肠上皮细胞迁移与修复、肠道屏障功能和肠道炎症相关疾病等过程的关系及其作用。  相似文献   

表皮生长因子在动物肠道无机离子及其他营养物质吸收中的作用     

汤小朋  刘虎  杨淑芬  方热军 《动物营养学报》2016,(8):2317-2323

表皮生长因子(epidermal growth factor,EGF)是生长因子家族成员之一,具有促进细胞生长、细胞迁移、细胞增殖、伤口愈合、骨骼愈合以及营养物质转运等生物学功能。大量研究表明EGF对钠离子、氯离子、镁离子、无机磷、葡萄糖、谷氨酰胺、小肽、5-羟色胺等物质的转运具有促进作用。本文旨在概述EGF对营养物质转运的影响,为EGF在动物生产上的应用提供参考。  相似文献