1,720,962 research outputs found
Groundnut foliage as feed for Cambodian cattle
Get PDFThis thesis explored smallholder cattle production in Cambodia and investigated the nutritive value of groundnut (Arachis hypogaea L.) foliage and/or cassava (Manihot esculenta, Crantz) tops as protein supplementation for cattle production.
The majority of households surveyed kept 1-3 cattle and the most common cattle management system was grazing with supplementation. There was shortages in feed resources particularly during the dry season, when mainly rice straw and low quality natural pasture were available. The major constraint to cattle production in the agro-ecological zones of the Great Lake floodplain, Mekong floodplain and Coastal zone was found to be low breed quality, while diseases were identified as the main constraint in the Plateau/Mountainous zone.
Foliage from groundnut, left as crop residues, was examined for its potential as a protein supplement to a basal diet of rice straw and para grass for growing cattle. Increased levels of sun-dried groundnut foliage (DGF) improved total dry matter intake, crude protein digestibility and nitrogen retention in cattle. Daily weight gain was higher on the supplemented diets than on the control diet, but did not differ among levels of supplementation. Supplementation of DGF at levels of 2 or 3 g crude protein per kg body weight increased microbial protein production and the efficiency in microbial crude protein production in cattle.
Responses in rumen fermentation characteristics were investigated in adult cattle using dried cassava tops (DCT) alone or in combination with DGF as a protein supplement to a basal diet of rice straw and para grass. Total dry matter intake increased when animals received diets containing DGF or DGF combined with DCT. However, the diet containing DCT had the lowest digestibility of crude protein and neutral detergent fibre. The ruminal ammonia nitrogen and total volatile fatty acid response increased with all diets containing supplements.
Keywords: apparent digestibility, ammonia nitrogen, daily weight gain, feed intake, microbial crude protein, smallholder cattle production, volatile fatty acids.
Author’s address: Pok Samkol, Centre for Livestock and Agriculture Development (CelAgrid), Phnom Penh, Cambodia,
P.O. Box 2423, Phnom Penh 3, Cambodia
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
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