1,720,989 research outputs found
Parametri ematochimici di vitelli a carne bianca
Full text linkSono valutati i parametri ematochimici dei vitelli facendo una rassegna della bibliografia passata e recente. Sono presentati i valori di una ricerca svolta per valutare i vari parametri ematochimici nei vitelli dall'inizio alla fine del ciclo produttivo con prelievi mensili di sangue, confrontando i vari parametri in funzione dell'età dei vitelli e confrontandoli con valori di ricerche precedenti e con alimentazione diversa
Effects of YANG (multi-strains yeast) supplementation effects on health and performances in male Holstein calves
No full textThe objective of this study was investigate the effects of a multi-strains yeast (S. cerevisiae and C. jadinii) fractions product, YANG, on the health and performance of young male dairy calves (17±3d). At a commercial farm, 158 veal calves were enrolled and divided in two groups: a control group (CTR) 57 animals (no supplementation) and a treated one (TRT) 101 animals (YANG supplementation), both balanced for live weight. TRT received YANG through the milk replacer: 5g/h/d during the first 30d, then 3g/h/d until d90. From d90 to 190 (slaughter) the diet was the same for both groups. For all animals, individual carcass weights, mortality and morbidity (veterinary treatments) were collected. Blood parameters (Hg, RDW, MCV; d30, 73, 115, 150) and electrophoresis for blood protein characterization (d47, 118) were analysed in 23 randomly selected animals (12 CTR and 11 TRT). On sampled animals, body weights were measured (d0, 47, 82). No differences were observed on carcass weights at slaughter and carcass classification between the two groups. However, sampled animals’ ADG was impacted. ADG from d0 to 47 and 47 to 82 was 263g/d and 321g/d higher, in TRT than in CTR (0.47kg/d, P=0.01; 1.01kg/d, P<0.01 respectively). No difference was observed in mortality, however health of calves was improved. Morbidity was reduced from 56% in CTR to 38% in TRT (P=0.02), with a reduction of number of chronic animals (≥2 treatments per animal) by 50% (P=0.03). Numerically, the reduction of veterinary treatments was mainly due to reduction of enteric treatments in TRT (-25.6%). TRT animals showed higher content of total proteins (P<0.01), with higher percentage of γ-globulins (P<0.01) and higher percentage of α1-globulins (P<0.01). These analyses are in favour of a better activated immune system of veal calves in TRT. No differences were observed on RDW and MCV. No differences in Hg average concentration, but more homogeneity in TRT. This study demonstrates that the health of veal calves was improved during their whole lifecycle with the addition of YANG in the milk replacer during the first 90d. These results are in line with reduction in use of antimicrobial treatments in farms
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
Analysis of the 227 bp short interspersed nuclear element (SINE) insertion of the promoter of the myostatin (MSTN) gene in different horse breeds
Full text linkThe myostatin (MSTN) gene encodes a protein known to be a negative regulator of muscle mass in mammalian species. Different polymorphisms of the horse (Equus caballus) MSTN gene have been identified, including single nucleotide polymorphisms and a short interspersed nuclear element (SINE) insertion of 227 bp within the promoter of the gene. The SINE insertion has been associated with performance traits in Thoroughbred racehorses and it was proposed as a predictor of optimum racing distance. The aims of this study were to perform in silico analysis to identify putative gains or abrogation of transcription-factor binding sites (TFBSs) generated by the SINE allele of the promoter and to analyse the frequency of the SINE insertion in horses used for racing (gallop and trot) and other purposes. The SINE insertion was genotyped in 227 horses from 10 breeds belonging to different morphological types (brachimorphic, mesomorphic, meso-dolichomorphic and dolichomorphic). The presence of the insertion was confirmed in the Quarter Horse (SINE allele frequency of 0.81) and in the Thoroughbred (0.51), whereas the SINE allele did not segregate in any of the other analysed breeds. As the SINE MSTN gene polymorphism may be population or breed specific, it is not a useful marker for association studies in all breeds
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
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