scholarly journals Progress in ileal endogenous amino acid flow research in poultry

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
V. Ravindran
Keyword(s):  
Amino Acid ◽  
Past Century ◽  
Protein Loss ◽  
The Past ◽  
Endogenous Protein ◽  
True Digestibility ◽  
Dietary Components ◽  
First Time ◽  
Gut Metabolism ◽  
Endogenous Amino Acid

AbstractThe progress in our understanding of the endogenous protein concept over the past century is reviewed. Non-dietary proteins found in the digesta at the terminal ileum of poultry, known as endogenous protein loss, are comprised of digestive secretions, mucus and sloughed gut epithelial cells. The measurement of this loss is of fundamental importance because it is an indicator of gut metabolism and is essential to adjust apparent estimates of ileal amino acid digestibility. The ileal endogenous amino acid losses comprise of two components, namely basal and specific losses. The basal losses are fixed and associated with feed dry matter intake, whereas the specific losses are variable and induced by the presence of dietary components such as fibre and anti-nutrients. Currently there is no methodology available to directly measure the specific endogenous losses and these losses are calculated by determining the basal and total (basal plus specific) losses and, then subtracting the basal losses from total losses. The seminal features, specific applications and shortcomings of available methodologies are briefly outlined as well as the practical challenges faced in using the published endogenous amino acid loss values for true digestibility corrections. The relevance of taurine as a component of endogenous protein flow in poultry is identified for the first time.

scholarly journals Tradiтionalism in structure of stile paradigms in the artistic thinking of the XXth century

2021 ◽  
Author(s):  
Lyudmila Іvаnоvа
Keyword(s):  
Da Vinci ◽  
Leonardo Da Vinci ◽  
Past Century ◽  
Theoretical Idea ◽  
The Past ◽  
World Outlook ◽  
Xix Century ◽  
First Time ◽  
Second Wave ◽  
Hard Type

The purpose of the article is a realization of tradiтionalism as mеtаdirection of art in XX century that historically comparable with mеtаdirection of styles modern-vanguard, jointly forming artistic paradigm of the past century, then the last becomes firmly established in nеоrеnaissаnce world-outlook according to with "system of Leonardo da Vinci" P. Valéry. The methodology of the study is a historian-cомpаrаtive approach, as this demonstrates works of A.Losev, also culturology foreshortening of musicology analysis, as this is given in "Symphonic etude" and others beside B.Asafiev. The scientific novelty of the work is conditioned, first, that that for the first time in specified foreshortening is presented analysis composition of V.Vlasov, but, secondly, original is a theoretical idea about cultural intrusion in style-typology life length Neo-Gothic that impossible was in classicist of music creative activity to XIX-XX cent. Conclusions. Traditionalism forms mеtаdirection since in base this style unity prescribed expressiveness of romanticism-pоstromanticism and realism XIX century that forms analogies to mеtаstyle forming of the modernism (vеrism at the end XIX - at the beginning initially XX century, "hard" type of the neoclassicism I. Stravinsky and P. Hindemith, others), in which vanguard took place as focus of the symbiosis of the styles-directions expressionism, futurism, primitivism, having formed new unity of the vanguard of the second wave in the manner of nеоexpressionism.

scholarly journals Endogenous amino acid flow in the avian ileum: quantification using three techniques

2004 ◽  
Vol 92 (2) ◽  
pp. 217-223 ◽  
Author(s):  
V. Ravindran ◽  
L. I. Hew ◽  
G. Ravindran
Keyword(s):  
Amino Acid ◽  
Glutamic Acid ◽  
Broiler Chickens ◽  
Sole Source ◽  
Physiological Conditions ◽  
Method Of Determination ◽  
Endogenous Protein ◽  
Protein Free Diet ◽  
Hydrolysed Casein ◽  
Endogenous Amino Acid

The aim of the present study was to compare the protein-free diet, guanidinated casein (GuC) and enzyme hydrolysed casein (EHC) methods for the quantification of endogenous amino acid (AA) flow in the avian ileum. Growing broiler chickens (5 weeks old) were used. All three assay diets were based on dextrose, and in the GuC and EHC diets GuC or EHC were the sole source of N. Endogenous AA flows determined with the use of protein-free diet were considerably lower (P>0·05) than those determined by the GuC and EHC methods. The total endogenous AA flows determined by the GuC and EHC methods were almost 3-fold greater (P>0·05) than those determined by the protein-free diet. The endogenous AA values obtained from GuC and EHC methods were similar (P<0·05), except for the flow of arginine, which was lower (P>0·05) in the EHC method. Glutamic acid, aspartic acid, threonine and glycine were the predominant endogenous AA present in digesta from the distal ileum. The contents of methionine, histidine and cystine were lower compared with other AA. The method of determination had no effect on the AA composition of endogenous protein, except for threonine, glutamic acid, lysine, arginine and cystine. The concentrations of threonine and arginine were lower (P>0·05) and that of lysine was higher (P>0·05) with the EHC method compared with the other two methods. The concentration of glutamic acid was greater (P0·05) and that of cystine was lower (P>0·05) in the EHC and GuC methods compared with the protein-free diet method. The results showed that the ileal endogenous flows of N and AA are markedly enhanced by the presence of protein and peptides, above those determined following feeding of a protein-free diet. It is concluded that the use of EHC and GuC methods enables the measurement of ileal endogenous losses in chickens under normal physiological conditions.

scholarly journals Redescription of Haemaphysalis (Rhipistoma) elliptica (Koch, 1844), an old taxon of the Haemaphysalis (Rhipistoma) leachi group from East and southern Africa, and of Haemaphysalis (Rhipistoma) leachi (Audouin, 1826) (Ixodida, Ixodidae

2007 ◽  
Vol 74 (3) ◽  
Author(s):  
D.A. Apanaskevich ◽  
I.G. Horak ◽  
J-L. Camicas
Keyword(s):  
East Africa ◽  
Southern Africa ◽  
Junior Synonym ◽  
Past Century ◽  
Nomen Nudum ◽  
Immature Stages ◽  
The Past ◽  
Wild Carnivores ◽  
First Time

Koch (1844) originally described only the male of Haemaphysalis (Rhipistoma) elliptica (Koch, 1844), which he named Rhipistoma ellipticum. For the past century, however, this name has been considered a junior synonym of Haemaphysalis (Rhipistoma) leachi (Audouin, 1826), or a nomen nudum. We redescribe here the male and larva of H. (R.) elliptica and describe the female and nymph for the first time. Our redescription is based on the male holotype, plus numerous specimens from southern and East Africa. The adults of this tick parasitize domestic and wild carnivores, and the immature stages infest rodents in these regions. For comparative purposes redescriptions of all parasitic stages of H. (R.) leachi are provided. It parasitizes the same hosts as H. (R.) elliptica in Egypt, and in northeastern, Central, West and East Africa.

scholarly journals King Edgar's charter for Pershore (AD 972)

2008 ◽  
Vol 37 ◽  
pp. 31-78 ◽  
Author(s):  
Peter A. Stokes
Keyword(s):  
Old English ◽  
Twelfth Century ◽  
Tenth Century ◽  
Past Century ◽  
Anglo Saxon ◽  
The Past ◽  
History Of ◽  
Single Sheet ◽  
First Time ◽  
Important Evidence

AbstractS 786 is one of the so-called Orthodoxorum charters, a group of documents which provide important evidence about the Anglo-Saxon chancery, the development of charters in the tenth century, and the history of Pershore Abbey and the tenth-century Benedictine reforms. The document has therefore received a great deal of attention over the past century or so, but this attention has been focussed on the surviving tenth-century single sheet, and so a second, significantly different version of the text has lain unnoticed. This second version is preserved in a copy made by John Joscelyn, Latin Secretary to Archbishop Matthew Parker. Among the material uniquely preserved in this copy are Old English charter bounds for Wyegate (GL), Cumbtune (Compton, GL?) and part of the bounds probably for Lydney (GL), as well as a reference to a grant by Bishop Werferth of Worcester. In this article both versions of the document are discussed and are published together for the first time, and a translation of the single sheet is provided. The history of the two versions is discussed in some detail, and the text of a twelfth-century letter which refers to the charter is also edited and translated.

Endogenous amino acid flows at the terminal ileum of broilers, layers and adult roosters

2004 ◽  
Vol 79 (2) ◽  
pp. 265-271 ◽  
Author(s):  
V. Ravindran ◽  
W. H. Hendriks
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Glutamic Acid ◽  
Terminal Ileum ◽  
Crude Protein ◽  
Amino Acid Profile ◽  
The Other ◽  
Endogenous Protein ◽  
Abundant Amino Acid ◽  
Endogenous Amino Acid

AbstractEndogenous flows of nitrogen and amino acids at the terminal ileum of broilers (6 weeks old), layers (70 weeks old) and adult roosters (70 weeks old) were determined using the peptide alimentation method. The ileal endogenous output of nitrogen and total amino acids in broilers, layers and roosters, expressed as mg/kg dry matter intake, were similar (F > 0-05). Endogenous flows were similar (F > 0-05) for nine of the 17 amino acids analysed, but the flows of serine, glutamic acid, proline, alanine, isoleucine, tyrosine, arginine and methionine differed (P < 0-05) among the classes of chickens. The amino acid profile of endogenous protein, expressed asg/100 g crude protein, did not differ (F > 0-05) between the three classes of chickens, except for serine, glutamic acid, proline and isoleucine. The concentrations of proline were higher (F < 0-05) in broilers, compared with the other two groups. The concentrations of glutamic acid in layers were lower (F < 0-05) than the other two groups. The concentrations of serine and isoleucine were higher (F < 0-05) in roosters than the other two groups. In all three groups, the most abundant amino acid in the ileal endogenous protein was glutamic acid, followed by aspartic acid, proline, serine, glycine and threonine. The present study provides estimates for endogenous amino acid flow at the terminal ileum in broilers, layers and adult roosters under normal physiological conditions.

Buddhist Apologetics and a Genealogy of Comparative Religion in Siam

Numen ◽  
2015 ◽  
Vol 62 (1) ◽  
pp. 76-99 ◽  
Author(s):  
Thongchai Winichakul
Keyword(s):  
Nineteenth Century ◽  
National Identity ◽  
Religious Identity ◽  
Comparative Religion ◽  
Past Century ◽  
Theravada Buddhism ◽  
The Past ◽  
Integral Component ◽  
Object Of Study ◽  
First Time

Contemporary identity in Thailand is prominently configured through an allegiance of reformed Buddhism with the modern Thai state. What is not well understood, however, is the centrality of “comparative religion” to the construction of this naturalized religionationalist identity, for interreligious study in Siam has been an integral component of modern Thai identity since the mid-nineteenth century. First, the emergence of “religion” as an object of study in modern Thailand is explored here, in an effort to detail the genealogy of this field for the first time. The articulation of Thai religious identity is identified as a response to intellectual challenges from colonial influences, especially the reproofs of Buddhism by Christian missionaries and Orientalist scholarship on religion. Thai Buddhist intellectuals responded to these challenges by robustly countering that Theravada Buddhism was, in fact, superior to Christianity and other religions. Finally, I explore the contentions between the Thai Buddhist apologetics and their opponents as a genealogy of the knowledge in comparative religion in Siam over the past century and a half. Given this genealogy, the field of comparative religion in Thailand is revealed as being far from a disinterested pursuit of knowledge; rather, it is part of the formation and reaffirmation of Thai national identity.

T. S. Eliot Studies Annual

2017 ◽  
Keyword(s):  
Past Century ◽  
Literary Modernism ◽  
Journal Articles ◽  
Contemporary Debate ◽  
The Past ◽  
Personal Library ◽  
First Time ◽  
Primary Materials ◽  
Made In

The T. S. Eliot Studies Annual brings together a collection of essays at the fore of the critical reassessment of Eliot’s life and work in light of the ongoing publication of his letters, critical volumes of his complete prose, the new edition of his complete poems, and the forthcoming critical edition of his plays. The volume features various approaches, but the dominant methodology is a historicist: essays reconsider Eliot’s work as a poet, critic, playwright, editor, and foremost exemplar of literary modernism in light of contemporary debate, contexts, and newly available primary materials. In addition to cutting-edge scholarship re-dating the chronology and genesis of Eliot’s poetry and plays, recasting longstanding scholarly debates, and reframing standard critical narratives, this volume contains two special forums. The first commemorates the centenary of the publication of “The Love Song of J. Alfred Prufrock.” Together, essays in this cluster reexamine the circumstances surrounding the poem’s original publication, recontextualize its allusions, and reconstruct its reception over the past century. The second essay cluster examines the annotations made in books from Eliot’s personal library, recently made available to researchers for the first time. The book concludes with a bibliography of recent Eliot scholarship, including book reviews, dissertations, journal articles, book chapters, and monograph publications.

The Invention of the Favela

2019 ◽  
Author(s):  
Licia do Prado Valladares
Keyword(s):  
Social Science ◽  
Social Science Research ◽  
Science Research ◽  
First Century ◽  
Past Century ◽  
Social Scientists ◽  
The Past ◽  
Anthropological Study ◽  
First Time ◽  
Research And Policy

For the first time available in English, Licia do Prado Valladares’s classic anthropological study of Brazil’s vast, densely populated urban living environments reveals how the idea of the favela became an internationally established—and even attractive and exotic—representation of poverty. The study traces how the term “favela” emerged as an analytic category beginning in the mid-1960s, showing how it became the object of immense popular debate and sustained social science research. But the concept of the favela so favored by social scientists is not, Valladares argues, a straightforward reflection of its social reality, and it often obscures more than it reveals. The established representation of favelas undercuts more complex, accurate, and historicized explanations of Brazilian development. It marks and perpetuates favelas as zones of exception rather than as integral to Brazil’s modernization over the past century. And it has had important repercussions for the direction of research and policy affecting the lives of millions of Brazilians. Valladares’s foundational book will be welcomed by all who seek to understand Brazil’s evolution into the twenty-first century.

scholarly journals Endogenous flow of amino acids in the avian ileum as influenced by increasing dietary peptide concentrations

2008 ◽  
Vol 101 (6) ◽  
pp. 822-828 ◽  
Author(s):  
Velmurugu Ravindran ◽  
Patrick C. H. Morel ◽  
Shane M. Rutherfurd ◽  
Donald V. Thomas
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Glutamic Acid ◽  
Broiler Chickens ◽  
Amino Acid Profile ◽  
Dependent Manner ◽  
Endogenous Protein ◽  
High Concentrations ◽  
Protein Free Diet ◽  
Endogenous Amino Acid

The aim of the present study was to establish whether feeding broiler chickens with diets containing increasing dietary peptide concentrations would cause increases in ileal endogenous amino acid flow. The flow of N and most amino acids increased quadratically (P < 0·05 to 0·001) with increasing dietary concentrations of peptides. The exceptions were the flow of threonine, serine, glycine, tyrosine and cystine, which increased linearly (P < 0·001) with dietary peptide levels. Another notable exception to the general trend was the flow of proline, which was significantly higher (P < 0·01) in birds fed the protein-free diet. The amino acid profile of endogenous protein, expressed as proportion of crude protein, indicated that the ratios of threonine, glutamic acid, proline, glycine, leucine, histidine, arginine and cystine were influenced (P < 0·05) with increasing dietary peptide concentrations. In general, compared with the protein-free diet, the ratios of threonine and arginine in endogenous protein were lower (P < 0·05) and those of glutamic acid, glycine and histidine were greater (P < 0·05) in diets with high concentrations of peptides. The ratio of proline was found to decrease (P < 0·05) with increasing dietary peptide concentrations. These changes in the amino acid profile of endogenous protein are probably reflective of changes in the output of one or more of the components of endogenous protein. Overall, the present results demonstrated that increasing dietary peptide concentrations increased the flow of endogenous amino acid flow at the terminal ileum of broiler chickens in a dose-dependent manner and also caused changes in the composition of endogenous protein. The observed changes in endogenous amino flow will influence the maintenance requirements for amino acids and also have implications for the calculation of true digestibility coefficient of feedstuffs.

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