Recursos de colección

RiuNet. Repositorio institucional de la Universitat de Valencia (72.956 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. Characterization of Clostridium perfringens presence and concentration of its [alfa]-toxin in the caecal contents of fattening rabbits suffering from digestive diseases

    Romero, Carlos; Nicodemus, Nuria; Jarava, Maria Luisa; Menoyo, David; Carlos, de Blas
    Digestive diseases are the main cause of morbidity and mortality in growing rabbits. Clostridium perfringens is a widely occurring pathogenic bacterium in enteric diseases of domestic animals and its pathogenicity stems from the production of potent exotoxins. This work aimed to quantify the concentration of C. perfringens [alfa]-toxin in caecal samples of rabbits with digestive diseases and relate these concentrations to C. perfringens counts. Additionally, C. perfringens strains isolated from rabbits with clinical lesions of Epizootic Rabbit Enteropathy (ERE) were toxinotyped. To conduct this work, a total of 711 rabbits weaned at 35 days were housed in pairs and fattened...

  2. Use of near infrared spectroscopy for intramuscular fat selection in rabbits

    ZOMEÑO, CRISTINA; HERNÁNDEZ, PILAR; BLASCO, AGUSTÍN
    The potential use of near infrared spectroscopy (NIRS) for the determination of intramuscular fat (IMF) content in rabbit selection programmes was evaluated. One hundred and thirty seven rabbits from three different synthetic lines slaughtered between 5 and 61 weeks of age were used for NIR calibration. Longissimus muscles (LM) were homogenised, freeze-dried and scanned by NIRS reflectance and total lipid content was chemically analysed. Calibration equation parameters reported appropriate results for IMF (cross-validation standard error, SECV=0.07g/100g muscle; cross-validation coefficient of determination, R2=0.98 and residual predictive deviation of cross-validation, RPD=7.57). Another 88 rabbits were used to study the suitability of NIR...

  3. Technical Note: Plastic mats prevent footpad injuries in rabbit does

    Rommers, Jorine; de Jong, Ingrid C.
    In the Netherlands, welfare regulations indicate that rabbits should be housed on 3 mm wire floors. In a pilot study, 3 mm wire floors did not decrease footpad injuries as expected, whereas a plastic mat fixed to the 3 mm wire did improve footpad quality. However, more data were necessary to support this finding. To this end, footpad injuries were studied in does housed on 3 mm wire floors (NOMAT) and 3 mm wire floors with a plastic mat (MAT) on five rabbit farms. On each farm, 25 cages were used for each floor type and footpad quality was measured...

  4. Technical Note: Design of a large variable temperature chamber for heat stress studies in rabbits.

    García Diego, Fernando Juan; Pascual Amorós, Juan José; Marco Jiménez, Francisco
    One of the major constraint factors for rabbit production consists of the environmental conditions and especially high temperatures that negatively affect reproduction and growth performance. For this reason, several studies have addressed the effects of heat stress and possible solutions to alleviate its impact on rabbit performance. This article describes the design and operating features of a large temperature chamber (13x4.7x3.1 m) configured to house 42 rabbits. The probes consisted of temperature sensor model DS2438 and humidity sensor model HIH-5031. The system was controlled by an Arduino platform programmed by its Integrated Development Environment (IDE) software. The system takes a...

  5. Effect of oxidation state of dietary sunflower oil and dietary zinc and [alfa]-tocopheryl acetate supplementation on performance of fattening rabbits

    Casado, Cristina; Moya Salvador, Vicente Javier; Pascual Amorós, Juan José; Blas Ferrer, Enrique; Cervera Fras, Mª Concepción
    Twelve diets were formulated using the same raw materials and including 3% of sunflower oil at 3 different oxidation levels [fresh (F), peroxidised (P; 55ºC for 11 d; 83 meq O2/kg oil) and highly-oxidised (O; 140ºC for 31 h; [Ro]-anisidine value of 125)], with 2 levels of [ALFA]-tocopherol supplementation (0 and 100 ppm), and 2 levels of Zn supplementation (0 and 200 ppm). A growing trial with 900 twenty eight d old rabbits was carried out in order to study the effect of the oxidation and protection level of supplemented oil on the performance of animals from weaning (28d) to...

  6. Effect of lighting schedule on production of rabbit does

    Gerencsér, Zsolt; Matics, Zsolt; Nagy, István; Szendro, Zsolt
    The aim of the experiment was to analyse the effects of the lighting schedule on the rabbit does' production. The does were randomly housed in two rooms at the age of 11 weeks. In the first room, a continuous 16-hour light period was applied (8:00-24:00) (16L:8D, control group; n=60 does, 239 parturitions). In the second room, an 8-hour light period was used (8:00-16:00) which was extended by an additional 1 hour light period in the middle of the 16-hour long dark period (23:00-24:00) 8 days prior to insemination (8L:7D:1L:8D, treated group; n=59 does, 223 parturitions). The experiment was finished after...

  7. Effect of feeding programme before weaning on the production of rabbit does and their kits

    Gerencsér, Zsolt; Matics, Zsolt; Nagy, István; Szendro, Zsolt
    The aim of the experiment was to analyse the effect of the feeding programme between 21 day of lactation and weaning on the production of rabbit does and their kits. The does were randomly housed in two rooms. In the first room, a continuous 16-hour light period was applied (16L; n=60). In the second room, an 8-hour light period was used which was extended by an additional 1 hour light period in the middle of the 16-hour long dark period 8 days prior to insemination (8+1L; n=59). In both rooms, two sub-groups were formed: in the first sub-group, does and...

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