1,721,011 research outputs found
Estimated requirements of net energy, digestible protein and NDF intake of Chianina young bulls from 400 kg liveweight to slaugter
No full textThree equations have been elaborated and proposed to predict the requirements of net energy and protein digestible in the intestine and NDF voluntary intake of growing young Chianina bulls, starting from 400 kg live weight.
The animals examined in the present study were 100 young Chianina bulls starting from about 400 kg live weight, at 10 months of age, up to the average slaughter weight of 800 kg at 20 months average age. The diet was based on hay and concentrates.
The equation for the prediction of net energy fits quite perfectly to another experimental equation formerly proposed by Giorgetti and is characterised by a very high value of the correlation coefficient for the regression comparison between observed and predicted figures (R-2=0.90). The statistical reliance degree of the PDIN prediction equation is lower, but still very good (R-2=0.75 between observed and predicted values), but that of the estimate of NDF daily intake resulted very poor (R-2=0.26 between observed and predicted values), probably due to the non homogeneity of the intake capacity of the 100 examined animals. The correlation between daily gains and the concentration of NDF in the diet DM results good (R-2=0.87), showing that young Chianina bulls take advantage of the diet fibre
Repeatability and reproducibility of the Cornell Net Carbohydrate and Protein System analytical determinations
No full textThe increasing use in Italy of the Cornell Net Carbohydrate and Protein System (CNCPS) led researchers of five Italianuniversities to carry out a collaborative study to evaluate the precision of the CNCPS chemical analysis and derivate fractions.Each laboratory conducted in duplicate the chemical analyses according to the Weende (dry matter; crude protein;ether extract; crude fibre; ash), Van Soest (neutral and acid detergent fibre, NDF and ADF; acid detergent lignin; ADL)and CNCPS (soluble proteins, SP; non-protein nitrogen, NPN; neutral and acid detergent insoluble protein, NDIP andADIP; starch, ST) schemes on the same five feeds (barley meal, wheat straw, maize silage, dried lucerne and fieldbeans). Anomalous analytical data were identified and corrected by the "box-plot" graphic tool before the calculation ofthe CNCPS protein (B 1, B 2, and B 3,) and carbohydrate (A, B 2 and C) fractions. Finally, repeatability (chemical analysis) andreproducibility (chemical analysis and fractions) were calculated and expressed as relative values (repeatability andreproducibility standard deviation as percentage of the corresponding mean, RSDr and RSDR, respectively). Chemicalanalyses of the Weende scheme, together with NDF, ADF and ST analyses, have satisfactory repeatability (0.3-6.2%) andreproducibility (0.3-11.2%) values. On the contrary the ADL, NPN, NDIP and ADIP analyses showed high variability, bothwithin and between laboratories (RSD r and RSD R between 20 and 45%). The SP analysis had an intermediate value ofprecision (RSD r=10.6%; RSDR=16.4%).Finally, since different combinations of several chemical analyses with scarce (ADL, NPN, NDIP, ADIP, SP) or average precision(e.g. NDF and starch) are used to calculate CNCPS fractions (excluding B 2 protein fraction), also the reproducibilitiesof these fractions are poor and range from 10 to 20%
Evoluzione del profilo in acidi grassi insaturi durante la stagionatura del formaggio Pecorino DOP a latte pastorizzato.
No full textIl contributo riguarda lo studio del profilo in acidi grassi insaturi durante la maturazione del formaggio pecorino DO
Fate of fatty acids during ageing of Tuscan sheep cheese.
No full textFatty acid profile during ageing of Tuscan Sheep Chees
Mixture of mono- di- and tri-glycerides as energy supplements to broilers diets.
Full text linkMixtures of mono-, di- and tri-glycerides from olive oil (MDT) were added to: palm oil (PO), olive oil (OO), soybean oil
(SO), free fatty acids from palm oil (PFA), free fatty acids from olive oil (OFA). The compound mixtures were used as
energy supplements in the diets of broiler chickens in comparison with plain SO and plain animal fat (AF). Two hundred
and ten birds were randomly allotted to 7 dietary treatments with the diverse oil sources: 6 birds per cage, 5 cages per
treatment. The effects of the treatments on growth rates, feed/gain ratios and acidic composition of abdominal fat of
hybrid Ross 308 female chickens were studied. The animals were slaughtered at the end of the trial, at day 35. The breast
meat quality was then evaluated by a panel of 15 trained members and analysed for shelf life duration. The AF treatment
gave the highest weight gain, but only in the first week. MDT + OO (50/50) resulted the best combination, with
slight, non significant, better performances and a decidedly better quality in terms of acidic composition of abdominal
fat, taste and juiciness of breast meat and shelf lif
Effect of glycerides and free short chain fatty acids replacing avilamycin in the diet of broiler chickens
No full textEffect of glycerides and free short chain fatty acids replacing avilamycin in the diet of broiler chicken
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
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