1,721,005 research outputs found
Pengaruh Pemberian Pakan Tepung Maggot dan Parutan Kelapa terhadap Pertumbuhan dan Kandungan Nutrisi Cacing Laut (Nereis sp.)
Get PDFEga Saputra, Vivi Endar Herawati, Pinandoyo. 2021. Pengaruh Pemberian Pakan Tepung Maggot dan Parutan Kelapa terhadap Pertumbuhan dan Kandungan Nutrisi Cacing Laut (Nereis sp.). Jurnal Sains Teknologi Akuakultur. 3(2): 103- 114. Cacing laut digunakan sebagai pakan induk udang. Pakan merupakan salah satu faktor pertumb uhan dala m budidaya cacing laut (Nereis sp.). T ujuan dari penelitian ini adalah untuk mengkaji pengaruh pemberian pakan tepung maggot dan parutan kelapa sebagai performa pertumb uhan dan kandungan nutrisi cacing laut (Nereis sp.). Cacing laut (Nereis sp.) dikultur dengan kepadatan 100 ekor/wadah pada masing -masing perlakuan sela ma 35 hari. Frekuensi pe mberian pakan 2 kali sehari dengan metode fix feeding rate 5% dari bobot bio massa. Metode penelitian eksperimental menggunakan Rancangan Acak Lengkap (RAL) dengan 4 perlakuan 3 ulangan yaitu perlakuan A (tepung maggot 50% dan parutan kelapa 50%), B (tepung maggot 75% dan parutan kelapa 25%), C (tepung maggot 25% dan parutan kelapa 75%) dan D (tepung maggot 100%). Hasil penelitian menunjukkan bahwa pemberian pakan tepung maggot dan paruta n kelapa berpengaruh sangat nyata (P0,05) pada nilai FCR. Nilai pertumbuhan mutlak, SGR, EPP, dan SR tertinggi pada perlakuan D (tepung maggot 100%) dengan nilai berturut -turut 0,40±0,01g, 3,15±0,03%, 48,31%±2,15 dan 99,67%±0,58. Sedangkan nilai T KP berkisar 32,33- 35,61%, dan nilai FCR berkisar sebesar 2,07-3,28%.Kandungan protein tertinggi pada perlakuan D (tepung maggot 100%) sebesar 54,05% dan lemak tertinggi pada perlakuan B (tepung maggot 75% dan parutan kelapa 25%) sebesar 22,82%. Berdasarkan hasil penelitian dapat disimpulkan pakan tunggal bersumber dari hewani (tepung maggot 100%) dapat dimanfaatkan sebagai pertu mb uhan, EPP dan kandungan nutrisi cacing laut (Nereis sp.
PENGARUH PENAMBAHAN EKSTRAK BUAH NANAS PADA PAKAN BUATAN TERHADAP TINGKAT PEMANFAATAN PAKAN, PERTUMBUHAN DAN KELULUSHIDUPAN BENIH IKAN BAWAL AIR TAWAR (Colossoma macropomum)
Get PDFPENGARUH PENAMBAHAN EKSTRAK BUAH NANAS PADA PAKAN BUATAN TERHADAP TINGKAT PEMANFAATAN PAKAN, PERTUMBUHAN DAN KELULUSHIDUPAN BENIH IKAN BAWAL AIR TAWAR (Colossoma macropomum)Cici Ulviyadipura, Johannes Hutabarat, Pinandoyo Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro Email: [email protected] ekstrak buah nanas dapat meningkatkan tingkat pemanfaatan pakan. Enzim bromelin yang terkandung didalam ekstrak buah nanas mampu memecah protein menjadi senyawa yang lebih sederhana sehingga mudah diserap kedalam tubuh. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian ekstrak buah nanas pada pakan buatan dan menentukan dosis optimum untuk meningkatkan pemanfaatan pakan, pertumbuhan dan kelulushidupan ikan bawal air tawar (C. macropomum). Ikan uji yang digunakan adalah benih ikan bawal air tawar (C. macropomum) berukuran 5 – 6 cm dengan rata-rata bobot awal 3,07±0,03 g dan kepadatan 1 ekor/1 liter selama 35 hari. Penelitian ini menggunakan metode eksperimental dengan rancangan acak lengkap yang terdiri 5 perlakuan dan 3 kali ulangan. Perlakuan yang diterapkan adalah perlakuan A, B, C, D dan E masing-masing dengan penambahan ekstrak buah nanas sebesar 0%, 0,75%, 1,5%, 2,25% dan 3%. Hasil penelitian menunjukkan bahwa penambahan ekstrak buah nanas memberikan pengaruh yang nyata (P<0,05) terhadap total konsumsi pakan (TKP), efisiensi pemanfaatan pakan (EPP), dan laju pertumbuhan relatif (RGR) namun tidak memberikan pengaruh yang nyata (P>0,05) terhadap protein efisiensi rasio (PER) dan kelulushidupan (SR). Dosis optimum ekstrak buah nanas sebesar 1,85% mampu menghasilkan TKP maksimal sebesar 79,8 g, dosis optimum ekstrak buah nanas sebesar 1,80% mampu menghasilkan EPP maksimal 41,8% dan dosis optimum ekstrak buah nanas sebesar 1,81% mampu menghasilkan RGR maksimal sebesar 3,30%/hari.Kata kunci : ikan bawal air tawar; ekstrak buah nanas; pemanfaatan pakan; pertumbuhan; kelulushidupanABSTRAC
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
