1,720,957 research outputs found
METABOLIC EFFECTS AND REPRODUCTIVE PERFORMANCES IN DAIRY COWS TREATED WITH A FUNCTIONAL FEED (NAT®W3)
No full textThe Authors investigated to correlate metabolic efficiency to reproductive performances by the administration of functional feed in high-producing dairy cattle. The trial want to study, also, the capability of laboratory diagnostic in evaluation and estimation of the reproductive capacities to select subjects to submit to reproductive praxis.
Functional feed contains vitamins E, A, D3, organic-selenium, polyinsaturated fatty acids (PUFA) and a prebiotic by fermented cereals. Effects of PUFA administered were particularly investigated in lipoprotein fractions composition, in blood. Optimal relationship among LDL-cholesterol, total cholesterol and progesteron was related to best reproductive performances: in this trial. Authors can confirm this on the basis of livestock performances. Study realized during the most worm period of the year when mean daily temperature go up to 30°C.
Metabolic parameters considered are linked to energetic, mineral and endocrine metabolisms. Determination were realized in blood-samples before, during, after the administration of NAT3. Bovines were fed with different addition of NAT3 (320-360 g/subj/die) for 4 months.
Reproductive indices studied were: open-days and number of services per conception.
Trend analysis of fertility indices demonstrated that blood levels of progesterone and blood antioxidant capability are strictly correlated and correlated also to reproductive performances.
Efficacy of treatment is demonstrated by the trend of the fertility indices in the post treatment period during which indices return progressively to the pre treatment values in about 60 days: this period correspond to the lipid tissue turnover time. During these days a temporary build-up of PUFA and liposoluble vitamins was observed.
Blood progesterone levels were higher (2.2 times) in correspondence of the 21st day post partum in treated subjects respect to control ( 0.18 vs 0.44 ng/l). Reproductive indexes recorded stressed that open-days varied from to . Number of services per conception was reduced from 121 to 95 at 60th day of treatment. In the next four months the value of the index settled between 90-95 days.
Data obtained in this study show that administration of PUFA, antioxidants and probiotics administred in dairy cows can remodel metabolisms correlated to fertility such as progesterone, prostaglandins and prostacyclins synthesis. These evidences are stressed by trends recorded in the herd concerning values of open-days and the number of services per conception
DAIRY COWS TREATED WITH A FUNCTIONAL FEED (NAT3): INVESTIGATION ON PUFA’S TRANSFER IN MILK AND CHEESES
No full textIn a previous trial we have demonstrated the increased content of fatty acids CLA and DHA in milk following to the administration of a functional feed NATW3(WBC 2008, Budapest). This study is to demonstrate that lower quantity of NATW3 in feed (320 g/subj./day vs 600 g/subj./day) resolves in similar results: decrease in SFA and increase in PUFA, especially cis-9 18:1, CLA and DHA. Trend of metabolic parameters was confirmed, expecially for lipidic status.
The trial involved 116 high-producing dairy cows belonging to two livestocks fed with the same feed: grass family hay (especially oat hay), grass family hay silage (triticale and barley), and industrial feed. The difference concerned the way of administration of industrial feed, ad libitum and with automatic feeding system. Milk was utilized for cheesemaking.
Analysis of lipid fractions stressed variations in composition , especially pointed out the transfer of PUFA in different cheeses, making their composition more suitable for a more salutistic intake.
“Mozzarella": total lipids +0,96%, total proteins +1,22%, CLA (C18: 2) +118,67%, DHA (C22: 6) +27%, EPA (C20: 5) +60,00%, palmitoleic acid (C16: 1) +29,15%, decrease of stearic acid(C18: 0) --9,84%.
”Canestrato": total lipidis +0,46%, total proteins +0,66%, CLA (C18: 2) +160,42%, DHA (C22: 6) + 80,00%, EPA (C20: 5) +154,54%, palmitoleic acid (C16: 1) +39,00%, decrease of stearic acid (C18: 0) -12,73%.
”Caciocavallo": total lipids +2,48%, total proteins +0,33%, CLA (C18: 2) +58,28%, DHA (C22: 6) + 55,00%, EPA (C20: 5) +76,67%, palmitoleic acid (C16: 1) +40,12%, decrease of stearic acid (C18: 0) -11,92%
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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