1,720,963 research outputs found
Effects of anaerobic digestates application on chemical composition and in vitro digestibility of alfalfa (Medicago sativa L.)
No full textThe food industry produces high quantities of organic wastes which can be used in agriculture for soil fertilization in order to reduce the application of mineral and/or synthetic fertilizers. In a permanent rain-fed meadow of alfalfa (Medicago saliva L., cv. Garisenda), the following three P fertilizer treatments were compared during the years 2006 and 2007 in a completely randomized experimental design with three replications: amendment based on the wastewater treatment of wine derived process (WWW); amendment based on wastewater from frozen food processing (WFF), an organic-mineral fertilizer (OMIN). All the treatments allowed a distribution of 75 kg ha(-1) of P2O5. Three cuttings occurred at 108, 134 and 315 days after digestatcs application (DAA) in 2006, and at 100, 122 and 269 DAA in 2007. Cumulative dry matter yields were measured during each experimental year. Furthermore, chemical composition and in vitro dry matter (DMD) and true DM (IVTDMD), organic matter (OMD), crude protein (CPD) and neutral detergent fibre (NDFD) digestibilities were determined. No significant difference was found among the fertilizer treatments in alfalfa cumulative dry matter yield. The fertilizer treatments affected only the hemicellulose (RC) content of alfalfa forage. Among the treatments, the WWW showed a significantly higher content of HC than WFF and OMIN. However, all digestibility parameters were unaffected by the fertilizer treatments. The results indicated that the soil distribution of these anaerobic digestates could represent a valid alternative to landfill disposal or to other waste management strategies in the mid-term period, without decreasing alfalfa yield, forage chemical composition and digestibility
Use of dietary mannanoligosaccharides during rabbit fattening period: Effects on growth performance, feed nutrient digestibility, carcass traits, and meat quality
No full textThis study was conducted to compare the
effects of mannanoligosaccharides (MOS) and antibiotics
as a dietary supplement on ADG, ADFI, G:F, and
feed nutrient digestibility of rabbits during the fattening
period, as well as on carcass traits and meat quality.
A total of 512, sixty-day-old hybrid Hyla rabbits were
randomly divided into 4 treatment groups based on BW
and sex. The 4 treatment groups consisted of a control
group and 3 MOS groups. The control group was fed
a diet that contained apramycin (50 mg/kg), but diets
for the 3 MOS groups contained 0.5, 1.0, or 1.5 g/kg of
MOS instead of apramycin. The rabbits were fed experimental
diets for 22 d and all rabbits were slaughtered
at the end of the experiment when they were 82 d old.
Individual BW and feed intake per cage were recorded
weekly for 32 cages randomly chosen per group (64
rabbits) to calculate ADG, ADFI, and G:F. The apparent
digestibility values of OM, CP, ether extract, crude
fi ber, NDF, ADF, cellulose, and hemicellulose were
measured using AIA as an inert marker. Carcass data
were collected from 16 randomly chosen rabbits (8
males and 8 females) per group. The control group had
less G:F (P < 0.001) than the MOS groups and a linear
increase (P < 0.001) in G:F was observed as the concentration
of MOS increased from 0.5 to 1.0 and 1.5 g/
kg. The apparent digestibility of DM, OM, crude fi ber,
NDF, ADF, cellulose, and hemicellulose increased
(quadratic, P < 0.05) as the concentration of MOS in the
diets increased. The apparent digestibility of DM, OM,
CP, crude fi ber, NDF, ADF, cellulose, and hemicellulose
was also greater (P < 0.05) in the diets containing
MOS than in the control diet and the digestibility of
these nutrients was greater (P < 0.05) in the diet containing
1.5 g/kg of MOS compared with the control
diet. The concentration of palmitic acid, stearic acid,
and SFA was greater (P < 0.05) in the meat from rabbits
fed the control diet than rabbits fed the MOS diets.
The concentration of stearic acid decreased (quadratic,
P < 0.05) in the meat of rabbits as the concentration of
MOS in the diet increased. Meat from rabbits fed diets
containing MOS also had greater contents of oleic acid
(P < 0.05) and MUFA (P < 0.001) than those rabbits fed
the diet containing apramycin. The thrombogenic index
was greater (P < 0.05) in the meat from the control
group rabbits than the MOS group rabbits. In conclusion,
the inclusion of MOS in diets fed to rabbits during
the fattening period may improve G:F and modify the
fatty acid profi le of meat
Bioactivators and nitrogen fertilisation applied to durum wheat: effects on the chemical composition and in vitro digestibility of straw
No full text
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
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