1,720,958 research outputs found
Occurrence of Breast Meat Abnormalities and Foot Pad Dermatitis in Light-Size Broiler Chicken Hybrids
Get PDFOnly limited information regarding the occurrence of breast meat abnormalities and foot
pad dermatitis (FPD) in current broiler genotypes is available. Therefore, this study was conducted
to estimate the incidence and severity of breast myopathies (white striping, WS; wooden breast, WB;
spaghetti meat, SM) and FPD in two fast-growing chicken hybrids, while simultaneously recording
their growth performance. A total of 1560 one-day-old female chicks (780 for each hybrid, A and B;
12 replicates/genotype) were raised in the same environmental conditions and fed the same diet.
Productive parameters were recorded at the end of each feeding phase. At slaughter (35 d), the
occurrence of meat abnormalities and FPD was assessed on 150 breasts/genotype and on all of the
processed birds, respectively. Although comparable growth performance was observed at
slaughter, genotype B reported a significantly higher percentage of breasts without meat
abnormalities (69% vs. 39%, 75% vs. 41%, 61% vs. 37% for WS, WB and SM, respectively) and also
birds without FPD, than genotype A (53% vs. 23%, respectively). Overall, these findings highlight
the importance of better understanding the effects of the genotype and the artificial selection applied
to fast-growing chicken hybrids on the occurrence of emerging meat abnormalities and FPD even
in light-size birds
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
Performance response of broiler chickens fed diets containing dehydrated microalgae meal as partial replacement for soybean until 22 days of age
Get PDFMicroalgae meal (MM) could represent a sustainable alternative to soybean meal as protein ingredient for broiler diets. The aim of this study was to investigate the effects of the dietary substitution of soybean with MM (Arthrospira spp.) during the first stages of the rearing cycle on the growth performance of broiler chickens. A total of 1 000 one-day-old Ross 308 male chicks were divided into 4 experimental groups (10 replicate pens/group with 25 birds each) receiving, during the starter (0–12 days) and grower (13–22 days) phases, either a conventional soybean-based diet (CON group) or the same diet including MM at low (LM group: 50 g/kg in both phases), intermediate (IM group: 100 and 90 g/kg, respectively), or high dosages (HM group: 150 and 140 g/kg, respectively). From 23 days onwards, all groups received the same conventional soybean-based diet up to slaughter age (47 days). All diets were formulated to be iso-energetic and with a similar amino acid profile. Productive parameters were recorded on a pen basis at housing (0 day), at 22 days, and at slaughter. At 22 days, body weight was linearly reduced and feed conversion ratio significantly worsened as the dietary inclusion of MM increased (931 vs. 850 vs. 709 vs. 462 g, and 1.539 vs. 1.656 vs. 1.783 vs. 2.312 for CON, LM, IM and HM groups, respectively; P < 0.001). CON and LM groups presented similar feed intake from 0 to 22 days, which was significantly higher if compared to IM and HM (1.367 vs. 1.333 vs. 1.184 vs. 0.964 kg/bird, respectively; P < 0.001). At 47 days, CON and LM groups exhibited comparable body weight, while IM and HM showed lower values (3455 vs. 3446 vs. 3221 vs. 2802 g, respectively; P < 0.001). No significant difference in FCR was observed in the overall period of trial (0–47 days). Similarly, liveability was not substantially affected by the treatments. Overall, these results indicate that the dietary administration of MM during the first 22 days of life significantly impaired broiler growth performance regardless of the dosage. However, by re-feeding a conventional soybean-based diet up to slaughter (47 days), broilers receiving 50 g/kg of MM up to 22 days achieved similar growth performance and productive efficiency to those fed a conventional soybean-based diet in all feeding phases
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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