Recursos de colección

RiuNet. Repositorio institucional de la Universitat de Valencia (73.332 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. Reliability of non-invasive tissue sampling methods for DNA extraction in rabbits (Oryctolagus cuniculus)

    Tircazes, A.; Feve, K.; Tudela, F.; Bolet, G.; Ben Larbi, Manel
    Deoxyribonucleic acid (DNA) can be extracted from different tissue sources. The most common is blood, but in some situations it can be easier to take a biopsy. In some cases when it is difficult to capture animals, especially in wild populations, faeces and hairs can be considered as a source of DNA. This paper presents a pilot study conducted to compare the applicability of invasive and non-invasive sampling methods for extracting DNA for use in genetic studies of rabbits (Oryctolagus cuniculus). The study included 24 rabbits from the INRA 1001 strain. Blood, hair, ear biopsies and faeces were collected and...

  2. Fertility potential of rabbit bucks fed maize-based diets containing graded levels of fumonisin B1

    Idahor, Kingsley; Egbunike, Gabriel
    Fumonisin B1-contaminated maize-based diets have been reported to be mycotoxic in animal species, yet more validated data and biomarkers are needed. In this study, Fumonisin B1 (FB1) infected yellow-maize was used to formulate Diets 1, 2 and 3, containing 1,700, 1,800 and 1,900µg FB1/kg diet, respectively. Sixty sexually matured bucks and does were used, but only the bucks were fed the FB1-contaminated diets for eight weeks. At the end of the feeding trial, the treated bucks were mated to the dry does that were fed FB1-free yellow maize-based diet. Effects on testis and live weight, feed utilisation, conception rate, embryo...

  3. Effect of the primary cooling rate on the motility and fertility of frozen-thawed rabbit spermatozoa

    Maeda, Tatsuhiro; Liu, Enqi; Nishijima, Kazutoshi; Yamaguchi, Shinji; Morimoto, Masatoshi; Watanabe, Teruo; Fan, Jianglin; Kitajima, Shuji
    In the present study, we examined the effect of primary cooling rates on the motility and fertility of frozen-thawed rabbit spermatozoa. Rabbit semen diluted with an egg-yolk acetamide extender was cooled from room temperature to 5°C at four different rates (-0.1, -0.2, -0.4, -0.8°C/min) as a primary cooling step, then semen was frozen in liquid nitrogen vapour. After thawing, sperm cooled at -0.1°C/min showed the highest motility (40.7 ± 7.3%); there were no significant differences between the motilities of the -0.1, -0.2, and -0.4°C/min groups. The motility of frozen-thawed sperm cooled at -0.8°C/min (29.2 ± 6.8%) was significantly lower than...

  4. Effect of lighting programme and nursing method on the production and nursing behaviour of rabbit does

    Gerencsér, Zsolt; Matics, Zsolt; Nagy, István; Szendrõ, Éva; Szendrõ, Zsolt
    The purpose of the experiment was to analyse how the production and nursing behaviour of rabbit does are influenced by different lighting programmes and nursing methods. Rabbit does (n=119) were housed in two rooms. The lighting schedules were a continuous 16L:8D (16L, n=55) or an interrupted 8L:4D:8L:4D (8+8L, n=64). In both rooms, half of the does nursed their kits freely (FS, n=53), while for the other half the suckling method was changed to controlled nursing 3 days prior to the artificial insemination (AI) at day 11 (FS-CS, n=66). Lighting schedule had no significant effect on any productive trait. 76% of...

  5. Effect of handling in pre-weaning rabbits

    Zucca, Daniela; Redaelli, Veronica; Marelli, S.P.; Bonazza, Vittorio; Heinzl, Eugenio; Verga, Marina; Luzi, Fabio
    The aim of this study was to investigate the effects of regular daily handling on weight gain and on the fear reaction towards a new environment and human beings in domestic kits (Tonic Immobility test: TI, Emergence test: ET). Two groups in the same environment and fed the same diet were analysed: handled group and control (17 litters, 9 kits/litter per group). No differences in weight gain were recorded. During ET at 33 days of age, handled kits took less time to enter the arena than control group kits. TI duration was shorter in handled kits, which required more inductions...

  6. Effect of environmental enrichment and group size on behaviour and live weight in growing rabbits

    Zucca, Daniela; Marelli, S.P.; Redaelli, Veronica; Heinzl, Eugenio; Cardile, Heidi; Ricci, Cristian; Verga, Marina; Luzi, Fabio
    The aim of this research was to study the effects of group size and environmental enrichment on behaviour and growth of 108 hybrid growing rabbits (Oryctolagus cuniculus). We compared the behaviour (time budget and reactions to specific behavioural tests: "tonic immobility" and "emergence test") and live weight of growing rabbits housed in cages with a different number of rabbits per cage (2, 3 and 4; same density:14 rabbits/m2). Half of the cages were enriched with a wooden stick (Robinia Pseudoacacia, length: 20 cm ¿ diameter: 6 cm, cylindrical) hanging from the ceiling of the cage. The stick and number of...

  7. Buck effect on rabbit oestrous: vulva colour, vaginal lumen cells and ovarian follicle populations

    Ola, Idowu; Oyegbade, Moses
    The aim of this study was to determine the response to combinations of male stimuli in the oestrous doe in terms of changes in vulva colour, exfoliated cells in the vaginal lumen and the ovarian histology. Twelve oestrous heterogeneous rabbits does (6 multiparous and 6 nulliparous) were allotted equally to 3 experimental treatments: VIC ¿ Male exposure with visual contact; NVC - Male exposure without visual contact and; NOC - Females completely isolated and not allowed any contact with the male. The does were placed under these treatments for 30 consecutive days during which vulvar colour was checked and vaginal...

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