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    PENGARUH PENGGUNAAN BEBERAPA JENIS ENKAPSULAN PADA ASAM LAKTAT TERENKAPSULASI SEBAGAI ACIDIFIER TERHADAP DAYA CERNA PROTEIN DAN ENERGI METABOLIS AYAM PEDAGING

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    Penelitian ini bertujuan untuk mengetahui pengaruh penambahan asam laktat terenkapsulasi sebagai acidifier dengan beberapa macam bahan enkapsulan terhadap daya cerna protein dan energi metabolis ayam pedaging. Materi yang digunakan dalam penelitian ini adalah ayam pedaging berumur 21 hari sebanyak 20 ekor dan asam laktat Bahan enkapsulan yang digunakan yaitu maltodekstrin, laktoglobulin, dan zeolit. Metode yang digunakan adalah percobaan secara in vivo menggunakan rancangan acak lengkap terdiri dari lima perlakuan Pakan Basal sebagai kontrol (P0), Asam Laktat Cair (P1), Asam laktat terenkapsulasi : Zeolit (P2), Lactoglobulin (P3) dan Maltodextrin (P4) dengan empat kali ulangan. Hasil yang diperoleh dari penelitian ini adalah perlakuan dengan penambahan asam laktat menunujukan adanya perberbedaan yang nyata (P<0,05) terhadap daya cerna protein dan memberikan pengaruh yang sangat nyata terhadap AME dan AMEn. Berdasarkan hasil penelitian dapat disimpulkan bahwa penggunaan asam laktat terenkapsulasi maltodextrin dan laktoglobulin dapat meningkatkan daya cerna protein, AME dan AMEn. Kata kunci : Asam Laktat, Enkapsulasi, Daya Cerna Protein, Energi Metabolis, Ayam Pedaging. ABSTRACT The aim of this research was to examine the influence of using several encapsulant of lactic acid as acidifier on protein digestibility and metabolizable energy in broilers. The materials used in this research were 20 broilers of 21 days of age, liquid lactic acid and encapsulated lactic acid. The encapsulant used were maltodextrin, lactoglobulin and zeolite. Broilers were randomly allotted to five dietary treatments with four replication each. The variables observed were protein digestibility and metabolizable energy. Data were analyzed by using Completely Randomized Design. The difference among the treatments was assayed by Duncan Multiple Range Test. The result of this research showed that lactic acid encapsulated was significant (P<0.05) influenced protein digestibility and significant (P<0.01) influenced with AME and AMEn. It can be concluded that lactoglobulin and maltodextrin on encapsulated lactic acid could beincrease AME, AMEn and protein digestibility. Keyword : Lactic Acid, Encapsulation, Protein Digestibility, Metabolizable Energy, Broile

    The Effect of Using Citric Acid and Lactic Acid Combination in Liquid and Encapsulated Forms as Feed Additive on Carcass Percentage and Internal Organ Weights of Broiler

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    The purpose of this research were to find out effect of using citric acid and lactic acid combination in liquid and encapsulated forms on broiler carcass percentage and internal organ weights (liver, pancreas, lymph, bile). The material used for this research was 108 Cobb broiler chicks with average initial body weight of 44,00 ± 3,37 g. The method used in this field experiment was Completly Randomized Design with 2 factors and 4 levels, and if there were significant influence it would be tested with Duncan’s Multiple Range Test. The result showed that citric acid and lactic acid combination in either liquid or encapsulated form showed no significant effect (P>0,05) on carcass percentage and liver, pancreas and lymph weights of broiler but it significantly affect (P<0,01) bile weight. The addition of 0.4 % citric acid and lactic acid combination in either liquid or encapsulated form gave the best result on percentage carcass. The conclusion that the additions of different level of citric acid and lactic acid combination in encapsulated form on broiler feed only gave significant effect on lymph weight.   Keywords: citric acid and lactic acid combination, liquid, encapsulated, carcass percentage, internal orga

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    Variations on the Author

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    “Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship

    Appropriate Similarity Measures for Author Cocitation Analysis

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    We provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis

    Dispelling the Myths Behind First-author Citation Counts

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    We conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more sophisticated methods

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