1,720,954 research outputs found
Effect of soy hulls as alternative ingredient on growth performance, carcase quality, nutrients digestibility and intestinal histological features in broilers
Full text linkThe objective of this study is to investigate the effects of increasing levels of soybean hulls in broiler chicken diets on growth performance, carcase composition, organ weights, nutrient digestibility, amino acid digestibility, and intestinal histomorphology to determine the optimal inclusion level for maximising poultry health and performance. A total of 680, 1-day-old male broiler chicks (Hubbard) were randomly assigned to five treatments with eight replicates, each consisting of seventeen birds, and housed in an environmentally controlled room with nipple drinkers and trough feeders. The experimental diets, containing 0%, 2%, 4%, 6%, and 8% dietary soybean hulls (SH), were fed to the broilers for 35 days. During the starter phase, the growth performance of chickens fed 2% SH was not significantly different from the control group, but differences emerged during the later stages. Chickens fed 2% SH showed significantly higher body weight and weight gain compared to higher SH levels. Carcase yield decreased with increasing SH content in the diet, while wing meat yield was highest in birds fed 0% and 2% SH. The relative weights of gizzard, jejunum, and ileum varied significantly among groups. Higher SH levels led to decreased nutrient digestibility but increased excreta nitrogen and ether extract content. Ileal amino acid digestibility varied among SH levels. Intestinal histomorphology revealed significant differences in villi height and crypt depth among groups. Overall, diets with 2% and 4% SH demonstrated superior nutrient utilisation and intestinal health compared to higher SH levels. These findings suggest an optimal inclusion level of SH in broiler diets to optimise performance and intestinal morphology
Effect of dietary polyphenol rich grape (Vitis vinifera) seed extract supplementation on production performance, egg quality, plasma MDA, reproductive performance and faecal microbiota of golden laying hens
Full text linkThe study investigated the effects of grape seed extract (GSE) supplementation on laying hens aged 30–35 weeks. Hens were assigned to four groups: a control group with only basal diet and three experimental groups with basal diet supplemented with 250 (GSE 250), 500 (GSE 500) and 750 (GSE 750) mg/kg GSE. GSE-supplemented groups showed significantly lower feed intake in week 1 and 3 in GSE 750. No significant differences were observed in feed efficiency, egg weight, shell thickness, yolk weight, albumin weight, or Haugh Unit, suggesting GSE did not significantly impact these parameters. Egg production significantly increased in groups supplemented with 500 and 750 mg/kg GSE compared to the control group. Additionally, GSE-supplemented birds exhibited significantly lower levels of malondialdehyde (MDA), a marker of lipid peroxidation, indicating potential antioxidant effects. The study further revealed a significant increase in Lactobacillus at GSE500 and GSE 750 levels and a significant reduction in E. coli levels with GSE 750 supplementation, suggesting potential benefits on gut microbiota. In conclusion, GSE positively influenced egg production, promoted Lactobacillus growth, and reduced lipid peroxidation and E. coli populations. However, reproductive efficiency in golden laying hens was not significantly affected. These findings contribute valuable insights into the potential benefits of GSE in poultry nutrition
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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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