Recursos de colección

RiuNet. Repositorio institucional de la Universitat de Valencia (89.348 recursos)

RiuNet es el Repositorio Institucional de la Universitat Politècnica de València, gestionado por la Biblioteca, cuyo objetivo es ofrecer acceso en Internet a la producción científica, académica y corporativa de la comunidad universitaria con la finalidad de aumentar su visibilidad y hacerla accesible y preservable.

Mostrando recursos 1 - 7 de 7

  1. The effect of intensive and extensive production systems on carcass quality in New Zealand White rabbits

    Daszkiewicz, Tomasz; Gugolek, Andrzej; Janiszewski, Pawel; Kubiak, Dorota; Czoik, Monika
    [EN] Forty New Zealand White rabbits weaned at 30 days were divided into 2 groups and reared under intensive or extensive production system till slaughter age (90 days of age). In the extensive production system, rabbits were housed in free-standing cages on straw litter and fed farm-made feed ad libitum. Control rabbits were raised intensively in wire mesh slatted floor cages, indoors and on a commercial pellet ad libitum. Hot carcass weight was 16,6% lower (P<0.01) in extensive production, although the difference of 1 point both in hot and cold dressing percentage in favour of the intensively reared rabbits was...

  2. Technical Note: Year, season, and parity effect on weaning performance of the Carmagnola Grey Rabbit breed

    Lazzaroni, Carla; Biagini, Davide; Redaelli, Veronica; Luzi, Fabio
    To evaluate the main environmental factors in the productivity of Carmagnola Grey rabbits, an endangered breed indigenous to northern Italy, data collected over 8 years were analysed. Production data on the pure closed nucleus herd of the University of Turin were used. Effects of parity, season and age of weaning on the number of rabbits born alive and weaned, litter weight and individual average weight at weaning were studied. The following average performance rates over the 8 years period were determined: 8.1 live born and 7.2 weaned kits per litter and a litter weight at weaning of 7287 g or...

  3. Particulate matter concentrations and emissions in rabbit farms

    Adell Sales, Elisa; Calvet Sanz, Salvador; Torres, Antonio G.; Cambra López, María
    [EN] The extent of the potential health hazards of particulate matter (PM) inside rabbit farms and the magnitude of emission levels to the outside environment are still unknown, as data on PM concentrations and emissions in and from such buildings is scarce. The purpose of this study was to quantify airborne PM10 and PM2.5 concentrations and emissions on two rabbit farms in Mediterranean conditions and identify the main factors related with farm activities influencing PM generation. Concentrations of PM10 and PM2.5 were determined continuously using a tapered element oscillating microbalance (TEOM) in one farm with fattening rabbits and one reproductive...

  4. Identification and analysis of single nucleotide polymorphisms in the myosin VA (MYO5A) gene and its exclusion as the causative gene of the dilute coat colour locus in rabbit

    Fontanesi, Luca; Scotti, Emilio; Dall'Olio, Stefania; Oulmouden, Ahmad; Russo, Vincenzo
    [EN] Classical genetic studies have identified different coat colour loci in rabbit and comparative analyses have established corresponding loci across species. In particular, the rabbit dilute locus is determined by a recessive coat colour mutation that modifies the basic colours influenced by the agouti and extension mutations. In mice, similar phenotypic effects are determined by a similarly named locus. This locus encodes the myosin VA (Myo5a) gene, whose protein product is an unconventional myosin that plays an essential role in melanosome transport in the melanocytes. We selected the same gene as a strong candidate for explaining the dilute coat colour...

  5. Epidemiological survey of dermatophytosis in meat rabbits with alopecia in Portugal

    Moreira, Fernando; Miranda, Alice; Coelho, A.M.; Monteiro, José; Coelho, A.C.
    An epidemiological dermatophytosis survey was carried out in farmed rabbits with alopecia in Northern and Central Portugal. Between August and October 2008, samples from suspected clinical cases of alopecia in meat rabbits on industrial farms were collected and cultured by conventional methods. Effects on the prevalence of several variables, such as breed, age, month of sample collection, configuration of the lesions and presence of concomitant infections in the rabbitries were evaluated using a logistic regression model. The overall prevalence of dermatophytes species was 82.7% (95% CI: 80.1-85.3%). Two dermatophytes species were isolated: Trichophyton mentagrophytes (91.9%) and Microsporum canis (8.1%). Five...

  6. Analysis of sexual behaviour in male rabbits across successive tests leading to sexual exhaustion

    Jimenez, Pedro; Serrano-Meneses, M.A.; Cuamatzi, E.; González-Mariscal, G.; González-Maris
    [EN] Various parameters of sexual behaviour were studied in ten male rabbits daily tested with sexually receptive females (ovariectomized, given estradiol benzoate s.c. 5 µg/day). The aim of this study was to analyse rabbit sexual behaviour during successive tests leading to sexual exhaustion. We allowed copulation ad libitum and determined if sexual satiety was reached within a day and sexual exhaustion across several days. The pair was allowed to copulate freely until the male failed to show sexual interest in that female for 30 minutes. The female was then removed and replaced by another; this procedure was repeated using as...

  7. An approach to the statistics of wild lagomorph captive rearing for releasing purposes in Spain

    Sánchez-García, C.; Alonso, M.E.; Díez, C.; Pablos, M.; Gaudioso, V.R.
    Despite the importance of rearing wild lagomorphs in captivity for hunting and predator conservation in Spain, little is known about this production sector. Taking official data into account, in this work the number and distribution of farms in Spain and the possible number of animals produced were analysed during the period 2005-2010. In 2010, 114 wild rabbit farms were widely distributed throughout the country (especially Catalonia, Galicia, Andalusia and Castile-La Mancha regions), while 21 hare farms were registered, the majority in Extremadura, Castile-La Mancha and Andalusia. A possible production figure of 225000-265000 rabbits and 1034 hares was estimated in 2010....

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