1,720,968 research outputs found
Environmental adapatability and stability for reporduction traits of local chicken breeds
No full textActa agriculturae slovenica, Supplement, No.
Prestazioni produttive di galline ovaiole appartenenti a due ibridi commerciali e a due razze autoctone allevate con metodo biologico
No full textCeruminous otitis in native chicken breeders belonging to Robusta Lionata breed
Full text linkAt the beginning of 2005, an outbreak of ceruminous otitis has been observed in a breeders flock belonging to the Robusta Lionata breed, a native chicken breed reared in a Centre for the valorisation and conservation of native poultry breeds. The disease caused a high morbidity rate (90% of birds), whereas the mortality affected only 10% of the birds. The death of the birds was preceded by clinical signs, such as worsening of the ceruminous otitis with abundant secretion of bad-smelling cerumen, lack of appetite and depression. The otitis externa, mainly bilateral, was the only evident finding at necropsy. Laboratory examinations showed only the presence of Mycoplasma synoviae, either by isolation on culture media or by PCR, on ear and choana samples. Aspergillus fumigatus was detected only in one bird. In this paper, the Authors report for the first time on an outbreak of ceruminous otitis in native chicken breeds and point out that the only pathogenic agent isolated from the birds has been Mycoplasma synoviae
Application of AFLP molecular markers to genetic characterisation of duck (Anas platyrhyncos), turkey (Meleagris gallopavo) and helmeted guinea fowl (Numida meleagris) Veneto breeds
No full textIn this work we summarize the results of the
application of AFLP molecular markers to the genetic characterisation of some duck, turkey and helmeted
guinea fowl Veneto breeds, whose conservation is the main aim of a regional project called “CO.VA.”
(Cassandro, 2004).
A total of 117 unrelated males reared in two nucleus units of CO.VA.
project in 2003 were analyzed. Genomic DNA was extracted from whole blood obtained from 68 ducks (Anas
platyrhyncos) belonging to the Mignon and the Germanata Veneta breeds, 28 turkeys (Meleagris gallopavo) of
two different breeds, Ermellinata and Comune Bronzato, and 21 Camosciata helmeted guinea fowls (Numida
meleagris). AFLP genotyping was carried out following the protocol described by Barcaccia et al. (1999), modified
for the use of TaqI endonuclease as the “frequent cutter” enzyme. In conclusion, AFLP markers allowed the genetic characterization
of the three species; heterozigosity and Gst index can be used to monitor genetic variability within and
among breeds, thus providing an important tool in the conservation scheme. In duck, AFLP markers permitted
the genetic differentiation within species through cluster analysis and also by means of factorial analysis.
In turkey, only cluster analysis allowed the distinction of the two breeds, but this result must be validated
increasing the number of animals for Ermellinata breed
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
An in situ markers assisted conservation scheme of 11 italian avian breeds
No full textWageningen Academic, Publishers
Monitoring genetic diversity in Italian local chicken populations involved in a marker assisted conservation plan
No full text- …
