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| 1 | A review of the effects of dietary organic acids fed to swine显示文摘Animal production depends on nutrient utilization and if done there is an accelerated momentum towards growth with a low cost to feed ratio Public concern over the consumption of pork with antibiotic residues of the animals fed with antibiotic growth promoters(AGP) has paved the way to use other additives like herbs and their products,probiotics,prebiotics etc.Numerous feed additives are in vogue for achieving this target and one such classical example is the usage of organic acids and their salts.Usage of organic acids was in progress for over four decades.Early weaned piglets are(3-4 weeks age) exposed to stress with a reduced feed intake,little or no weight gain.This post weaning lag period is due to a limited digestive and absorptive capacity due to insufficient production of hydrochloric acid,pancreatic enzymes and sudden changes in feed consistency and intake.Lowering dietary pH by weak organic acids was found to overcome these problems.The main activity of organic acids is associated with a reduction in gastric pH converting the inactive pepsinogen to active pepsin for effective protein hydrolysis.Organic acids are both bacteriostatic and bactericidal.Lactic acid has been reported to reduce gastric pH and delay the multiplication of an enterotoxigenic E.coli.These acids are the intermediary products in Kreb's cycle and thus act as an energy source preventing the tissue breakdown resulting from gluconeogenesis and lipolysis.Excretion of supplemental minerals and nitrogen are minimized with organic acids as these form complexes with minerals and aids for their bio-availability.Short chain fatty cids like acetic,propionic and n-butyric acid produced by microbial fermentation of dietary fibre in the large intestines may increase the proliferation of epithelial cells and have stimulatory effects on both endocrine and exocrine pancreatic secretions in pigs.Organic acids also enhances apparent total tract digestibility and improves growth performance.It is concluded that organic acids and their salts increase the protein utilization especially in weaner pigs and improves production indices. | Mocherla V A N Suiryanrayna J V Ramana | 2016 | Journal of Animal Science and Biotechnology2016，7，1： | 15 |
| 2 | 日粮中添加有机酸对猪消化道的影响(综述)显示文摘动物的生产力取决于它们对养分的利用情况,如果一切顺利,动物就会加速增长,成本饲料比降低。公众担心食用饲喂抗生素生长促进剂的猪会生产出带有抗生素残留的肉,这为使用其他饲料添加剂如中草药及其制品、益生菌和益生元等铺平了道路。有许多饲料添加剂为实现这一目标而大量流行,其中一个经典的案例是有机酸以及有机酸盐的使用。有机酸的使用已经持续了四十多年。早期断奶仔猪(3~4周龄)面临着采食量减少的应激,甚至导致体重几乎无增加。仔猪在断奶后出现的这种生长停滞是由于其消化和吸收能力有限所致,也是盐酸和胰腺酶分泌不足以及日粮一致性和采食量的突然变化带来的结果。研究表明利用弱有机酸来降低日粮pH可以克服这些问题。有机酸的主要活性与降低胃内容物pH有关,其可将胃蛋白酶原转变为具有活性的蛋白酶,以进行有效的蛋白质水解。有机酸既能抑菌又能杀菌。据报道,乳酸可以降低胃内容物的pH,并延缓产肠毒素性大肠杆菌的增殖。这些酸性物质是克雷伯氏菌循环的中间产物,它们作为消化道上皮细胞的能量来源,可以防止糖异生和脂解作用引起的组织降解。有机酸可尽量减少添加的矿物质和氮的排泄量,这是因为有机酸会与矿物质形成复合物,提高它们的生物利用率。大肠中的日粮纤维经微生物发酵会生成乙酸、丙酸和正丁酸等短链脂肪酸,它们能够促进消化道上皮细胞的增殖,且对猪胰腺的内分泌和外分泌产生刺激作用。有机酸还可以提高猪的表观总消化道消化率,并改善动物的生长性能。综上,有机酸及有机酸盐可以提高猪尤其是断奶仔猪的蛋白质利用率,同时提高生产指标。 | 付亚楠(译) 张配配(审) Mocherla V A N Suiryanrayna J V Ramana | 2019 | 国外畜牧学(猪与禽)2019，39，2： | 4 |
| 3 | 日粮中添加有机酸对猪消化道的影响(综述)(续2)显示文摘本文是《日粮中添加有机酸对猪消化道的影响(综述)》的第三部分,主要介绍有机酸的使用方法和单体有机酸在动物营养中的应用。 | 付亚楠(译) 夏俊花(审) 何闪(制图表) Mocherla VAN Suiryanrayna J V Ramana | 2019 | 国外畜牧学(猪与禽)2019，39，4： | 3 |
| 4 | 浸渍硅胶薄层色谱板分离钴和镍及数字图像分析法定量(英文)显示文摘Thin layer chromatography(TLC) of cobalt and nickel has been performed on silica gel layers induced with alkali mediated cellulose extract.A novel combination of 10% aqueous solutions of Tween-20 and potassium thiocyanate in 1∶1(v/v) was identified as the best mobile phase for the selective separation of Co2+from Ni2+on the impregnated Silica Gel G layers.The chromatographic characteristics of the cations were studied and the limits of detection as well as the limits of quantification for Co2+and Ni2+were determined.The quantitative estimation of the cations was achieved from the digital image analysis of respective chromatograms.The proposed quantitative method was successfully applied with 0-0.50% error for the determination of Co2+from Ni2+in spiked samples of bauxite,soil and rock containing common cations such as Al3+,Fe2+,Ti4+,Zn2+,Mn2+,Cu2+,Cr6+,Mg2+,etc.under the optimized chromatographic conditions. | P A MOHAMED NAJAR R G SONALI M T NIMJE K V RAMANA RAO | 2012 | 色谱2012，30，10： | 2 |
| 5 | Regulation of simultaneous hydrogen photoproduction during growth by pH alld glutamate in rhodobacter spharoides显示文摘 | Asikala k Ramana C H V Rao P R | 1995 | In J Hydrogen Energy1995，，20： | 1 |
| 6 | Correlation between structural, magnetic, and dielectric properties of manganese substituted cobalt ferrite显示文摘 | Ramana C V Kolekar Y D Kamala Bharathi K | 2013 | Journal of Applied Physics2013，114，： | 1 |
| 7 | Mild and efficient reduction of azides to amines: synthesis of fused quinazalinones 显示文摘 | Kamal A Ramana K V Ankati H B Ramana A V | 2002 | Tetrahedron Lett2002，43，： | 1 |
| 8 | Atmospheric brown clouds: long-range transport and climate impacts显示文摘 | RAMANATHAN V RAMANA M V | 2003 | EM2003，12，1： | 1 |
| 9 | Atmospheric brown clouds: Long-range transport and climate impacts 显示文摘 | Ramanathan V Ramana M V | 2003 | Environment Management2003，，： | 1 |
| 10 | Distortion minimization during gas quenching process 显示文摘 | Zhichao Li Ramana V Grandhi | 2006 | Journal of Materials Processing Technology (S0924-0136)2006，172，2： | 1 |
| 11 | Characterization of chemically treated bacterial (acetobacter xylinum)biopolymer: Some thermo-mechanical properties 显示文摘 | George J Ramana K V Sabapathy S N | 2005 | Jntemational Journal of Biological Macromolecules2005，37，4： | 1 |
| 12 | Structural stability and phase transitions in WO3 thin films 显示文摘 | RAMANA C V UTSUNOMIYA S EWING R C | 2006 | Journal of physical chemistry b2006，110，10： | 1 |
| 13 | Characterization of chemically treated bacterial (Acetobacter xylinum) biopolymer: Some thermo-meehanieal properties 显示文摘 | George J Ramana K V Sabapathy S N | 2005 | International Journal of Biological Macromolecules2005，37，： | 1 |
| 14 | 5-aminolevulinic Acid: A Potential Herbicide Insecticide from Microorganisms显示文摘 | Sasikala C Ramana C V Rao P R | 1994 | Biotechnology progress1994，10，5： | 1 |
| 15 | Macrophage activation syndrome-what's in a name 显示文摘 | Ramana A V Schneider R | 2003 | J Rheumatol2003，30，12： | 1 |
| 16 | The CWSI variations of cotton crop in a semi-arid region of Northeast Brazil显示文摘 | B Barbosa da Silva T V Ramana Rao | 2005 | Journal of Arid Environments2005，62，4： | 1 |
| 17 | Changes in selenoprotein P in substantia nigra and putamen in Parkinson's Di,ease显示文摘 | Bellinger F P Ramana A V Rueli R H | 2012 | Journal of Parkinsons''s Dis- ease2012，2，2： | 1 |
| 18 | Improved Ferroelectric and Pyroelectric Proper- ties of Pb-doped SrBi4 Ti4O15 Ceramics for High Tem- perature Applications显示文摘 | RAMANA E V GRACA M P F VALENTE M A | 2014 | Journal of the American Ceramic Society2014，583，： | 1 |
| 19 | Characterization of chemically treated bacterial (Acetobacter xylinum) biopolymer:Some thermo-mechanical properties显示文摘 | George J Ramana K V Sabapathy S N | 2005 | Int er J Biolog Macromol2005，37，4： | 1 |
| 20 | Cembrane diterpenes from a new species of the genus Lobophytum of the Indian Ocean显示文摘 | Rao Ch B Ramana K V Kalidindi R S | 1994 | Indian Journal Chemistry1994，33，： | 1 |
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