1,720,963 research outputs found
Utilizzo di fonti alternative alla soia nell' integrazione proteica di bovine da latte al pascolo in allevamento biologico
No full textEffects of pen floor and class of live weight on behavioural and clinical parameters of beef cattle
Full text linkEffects of pen floor on clinical and behavioural parameters of newly received beef cattle fattened under intensive rearing systems
Full text linkThe study compared clinical and behavioural parameters of newly received beef cattle after one month of housing, on two different types of floor (fully slatted vs. deep litter). The assessment was carried out on 14 batches of imported French bulls reared in an intensive farm. The slatted floor increased the likelihood of occurrence of skin alterations, while it improved bulls cleanliness. The type of floor had a minor effect on cattle behaviour during the early part of fattening cycle and the observed differences were more due to the shape of the pen, rather than its type of floor
Extruded pea (Pisum sativum) as alternative to soybean protein for dairy cows feeding in organic Alpine farms
No full textThe study evaluated the use of extruded pea as an alternative to soybean in the protein feeding of dairy cattle raised in organic Alpine farms. The research was carried out in a commercial organic dairy farm located in the Province of Trento (Northern Italy) and it considered two separate periods of cows’ lactation: early and late lactation. According to the traditional management practice of alpine dairy herds with the seasonal calving of the cows in early winter, the former period was carried out during the cold season when cows were housed indoors, while the latter period started after the transfer of the entire herd to an alpine pasture for the summer grazing. In both periods, 16 cows of Rendena breed were equally assigned to 2 experimental groups. The dietary forage (meadow hay in early lactation or pasture in late lactation) was supplemented to one group of cows with a Control concentrate in which soybean expeller, sunflower expeller and wheat bran were the main protein feeds. Soybean proteins were replaced by extruded peas in the Soy-free concentrate given to the other group of cows. The daily amount of concentrate was adjusted to the individual milk yield on a weekly basis adopting ratios of 0.360 and 0.125 kg of DM per kg of milk in early and late lactation periods, respectively. Cows receiving Soy-free concentrate showed a higher milk yield than the Control cows in both lactation periods (18.7 vs 17.5 kg/d in early lactation and 9.3 vs 8.6 kg/d on pasture, respectively). Milk fat and protein were not affected by the diet at any stage of lactation, while a higher concentration of milk urea was observed in milk samples taken from Soy-free cows in both periods of the study. This result could have been promoted by the higher soluble fraction of extruded pea proteins in comparison to that of soybean expeller. Cows feeding behaviour was monitored only in the early lactation period and despite of the different amount of concentrate consumed by the two groups of cows (7.0 vs 6.6 kg/cow/d for Soy-free and Control, respectively), their total time spent eating and ruminating was not affected by the diet. Based on these findings, extruded peas can be considered a valuable alternative to soybean in the protein feeding of cattle raised for organic milk production in the Alpine region
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
Genetic parameters of beef quality traits for Piemontese cattle
No full textThe aim of this study was to estimate heritability of beef quality traits in Piemontese cattle. A
total of 804 young bulls, progeny of 109 AI sires, were sampled from 124 fattening farms (FF) and slaughtered in
different days at the same commercial abattoir. At slaughter, bulls were 523±73 d old and average carcasses weight
(CW) was 417±45 kg. Carcasses were scored for fleshiness (EUS) and fatness. An individual beef sample was collected
from Longissimus Thoracis 24 h after slaughter and held refrigerated at 4 °C for 8 d. Measured traits were
pH at ageing (pH8d), beef colour (L*, a*, b*, Hue and Chroma), shear force (SF), drip (DL) and cooking loss (CL). A
REML linear animal model including the fixed effects of FF, slaughter age and CW class and the random effect of
the bull was used. The estimated heritability for EUS, SF, DL, Hue, L* and a* was of intermediate magnitude (from
0.22 to 0.49) whereas heritabilities for all other traits were low (from 0.04 to 0.16)
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
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