Recursos de colección

RiuNet. Repositorio institucional de la Universitat de Valencia (102.815 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 - 9 de 9

  1. The lipopolysaccharide from Escherichia coli O127:B8 induces inflammation and motility disturbances in rabbit ileum

    Grasa, Laura; Gonzalo, Sergio; de Martino, Alba; Murillo, María Divina
    [EN] The aim of this work was to evaluate the effects of lipopolysaccharide (LPS) from Escherichia coli O127:B8 on the expression of toll-like receptor 4 (TLR4), the histology, and motor function in rabbit ileum. Rabbits were injected intravenously with saline or LPS (100 μg/kg, 2 h). The mRNA expression and localization of TLR4 were determined by reverse transcriptase-PCR and immunofluorescence, respectively. Histological damage induced by LPS was evaluated in sections of ileum stained with haematoxylin and eosin. Contractility studies of ileum were performed in an organ bath. The mRNA expression of TLR4 decreased in the muscular but not in the...

  2. Superovulation and expression of follicle-stimulating hormone receptor in young rabbit females

    Zhang, Hao; Cheng, Guo Hu; Li, Yong Jun; Cai, Miao Yin; Guo, Hai Yan; Qin, Kang Le
    [EN] To optimise the use of juvenile in vitro embryo transfer technologies in young rabbit females, superovulation was performed in New Zealand White young rabbit females at different ages and the expression mode of follicle-stimulating hormone receptor (FSHR) was explored using real-time quantitative polymerase chain reaction, and in vitro maturation (IVM) together with fertilisation (IVF) was conducted immediately after superovulation. The results showed that (1) the age factor significantly affected superovulation in young rabbit females, with 60 d as an optimal age; (2) the mRNA level of FSHR exhibited a rising trend, though it was lower at 30 to 40...

  3. Polymorphisms of exon 5, exon 7 and intron 10 of MMP2 gene and their association with wool density in Rex rabbits

    Chen, S.J.; Liu, Y.J.; Liu, T.; Chen, B.J.; Gu, Z.L.
    [EN] Wool density is an important index that influences Rex rabbit fur quality. In our earlier studies, we found some important differentially expressed genes in different wool density of Rex rabbit by cDNA microarray. Based on the outcome, we conducted an association study to identify single nucleotide polymorphisms (SNPs) of exon 1, 5, 7 and 10 of matrix metalloproteinase-2 (MMP2) gene and their ligands associated with wool density. The results showed that exon 1 and exon 10 of MMP2 gene did not occur mutation in 100 Rex rabbits, meanwhile 3 SNPs were identified in exon 5, exon 7 and intron...

  4. Milk intake in kits: not only the total amount matters

    Bonachera, Alberto Arnau; Cervera, C.; Martínez-Paredes, E.; Ródenas, L.; Pascual, J. J.; Blas, E.
    [EN] The aim of this work was to identify milk intake variation patterns in kits throughout lactation, to evaluate their permanent maternal component and their relationships with the performance of kits before and after weaning. To achieve this goal, we used 73 rabbit does, controlled between the 1st and the 4th lactation, which kindled 229 litters with a total of 2225 kits. The daily milk intake records per young rabbit were analysed using a principal component analysis (PCA). We found that 72.3% of the variability was explained by the first 3 principal components (PCs). PC1 explained 46.4% of the total...

  5. Feeding rabbits (Oryctolagus cuniculus ) with tree fruits from tropical deciduous forest

    Hernández-Hernández, Eliceo; López-Ortiz, Silvia; Villarruel-Fuentes, Manuel; Pérez-Hernández, Ponciano; Velasco-Velasco, Joel; Salinas-Ruíz, Josafhat
    [EN] The dietary preference and voluntary intake of fruits from Acacia cochliacantha, Caesalpinia cacalaco, Vachellia pennatula, Chloroleucon mangense, Senna atomaria and Guazuma ulmifolia [containing 8.5-13.6% crude protein (CP) and 25.9-72.9% neutral detergent fibre (NDF) on dry matter (DM) basis], and the partial replacement of a commercial diet with 0, 15, 30 and 45% G. ulmifolia fruit were studied in rabbits. Rabbits fed a standard diet (17.9% CP and 28.4% NDF) were used to study their preference (during 20-min periods) for 6 ground fruits (Experiment 1: 12 rabbits, from 45 to 56 d of age and 1180±114 g live weight [LW]),...

  6. Evaluating skin quality of some rabbit breeds under Egyptian conditions

    Taha, Emad; Samia, A.H.; Nasr, Ahmed Ibrahim
    [EN] Histological skin parameters in addition to mechanical and chemical properties of chrome tanned rabbits’ furs were determined in this study to evaluate and compare the quality of some rabbit breeds. Seventy-nine male rabbits aged 3 mo of New Zealand White (NZW, n=27), Rex (RX, n=24) and Gabaly (GB, n=28) were used. Results showed that GB skins had the highest values in skin weight (P<0.01) and area (P<0.05) followed by NZW and RX skins, respectively. Moreover, NZW skins differed in histological structure from the other 2 breeds, as total thickness and thickness of papillary and hypodermis layers in NZW were...

  7. Effect of feed restriction and feeding plans on performance, slaughter traits and body composition of growing rabbits

    Birolo, Marco; Trocino, Angela; Tazzoli, Marco; Xiccato, Gerolamo
    [EN] Two feeding systems (L, ad libitum vs. R, feed restriction) were combined with 3 feeding plans (MM, MH, HH) to evaluate the effects on performance, slaughter results, body composition and nitrogen balance of 300 commercial crossbred rabbits kept individually from weaning to slaughter (34-70 d of age). The R rabbits were fed from 80% (first days on trial) to 100% (end of 3rd wk) of ad libitum intake, whereafter R rabbits had free access to feed. The 3 feeding plans were: MM plan, M diet with moderate digestible energy (DE) content, 10.6 MJ/kg, throughout the trial; HH plan, H...

  8. Effect of competitive exclusion in rabbits using an autochthonous probiotic

    Cunha, Sara; Mendes, Ângelo; Rego, Dinis; Meireles, Diana; Fernandes, Ruben; Carvalho, André; Martins da Costa, Paulo
    [EN] Animal nutrition has been severely challenged by the ban on antimicrobials as growth promoters. This has fostered the study of alternative methods to avoid colonisation by pathogenic bacteria as well as to improve the growth of animals and feed conversion efficiency. These new options should not alter the normal intestinal microbiota, or affect it as little as possible. The use of probiotics, which are live microorganisms that beneficially affect the host by improving its intestinal microbial balance, can be seen as a promising way to achieve that goal. In this study, New Zealand White rabbits were fed diets containing...

  9. Changes in cytochrome P450 gene expression and enzyme activity induced by xenobiotics in rabbits in vivo and in vitro

    Palócz, Orsolya; Farkas, Orsolya; Clayton, Paul; Csikó, György
    [EN] As considerable inter-species differences exist in xenobiotic metabolism, developing new pharmaceutical therapies for use in different species is fraught with difficulties. For this reason, very few medicines have been registered for use in rabbits, despite their importance in inter alia meat and fur production. We have developed a rapid and sensitive screening system for drug safety in rabbits based on cytochrome P450 enzyme assays, specifically CYP1A1, CYP1A2 and CYP3A6, employing an adaptation of the luciferin-based clinical assay currently used in human drug screening. Short-term (4-h) cultured rabbit primary hepatocytes were treated with a cytochrome inducer (phenobarbital) and 2 inhibitors...

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