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RiuNet. Repositorio institucional de la Universitat de Valencia (85.457 recursos)

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Revistas UPV. Editorial UPV

Mostrando recursos 1 - 20 de 32

  1. The effect of age on the carcass composition, portion yield and proximate composition of two rabbit genetic types in South Africa

    North, M.K.; Nkhabutlane, P.; Hoffman, L.C.
    [EN] This study investigated the carcass component yields and meat proximate composition of 2 rabbit genetic types (Californian and hybrid New Zealand Red×Californian), with 5 rabbits per genetic type being slaughtered every 2 wk throughout the study period (9-17 wk) to evaluate the effect of age on these traits. Slaughter weight, reference yield, portion yield (hind leg, foreleg and fore part, as percentage of slaughter weight), meat yield, skin weight and the fat content of the meat (percentage of wet weight) increased significantly with age, while the full gastrointestinal tract, liver, head and feet decreased significantly. This is likely a...

  2. Pyrosequencing study of caecal bacterial community of rabbit does and kits from a farm affected by epizootic rabbit enteropathy

    Abecia, L.; Rodríguez-Romero, N.; Martínez-Fernández, G.; Martínez Vallespín, Beatriz; Fondevila, M.
    [EN] Epizootic Rabbit Enteropathy (ERE) is a disease of unknown aetiology that mainly affects post-weaning animals. Caecotrophs from animals in a farm affected by ERE were analysed to identify changes in the microbiological profile of growing rabbits. Does and kits at weaning (28 d) and the same rabbits ten days later (38 d) were used for a comparison using Roche 454 pyrosequencing of hypervariable V3-V5 regions of the 16S rRNA genes. The caecal bacterial community was dominated by the Firmicutes phylum (about 80%), followed by Bacteroidetes (15%), although relative abundances changed according to animal age (among does and kits at...

  3. Energy balance and body reserves in rabbit females selected for longevity

    Garreau, H.; Larzul, C.; Tudela, F.; Ruesche, J.; Ducrocq, V.; Fortun-Lamothe, L.
    [EN] The aim of this study was to compare the energy balance and dynamic of body reserves in rabbit females divergently selected for longevity. One hundred and twenty-nine females from a high longevity line (HL) and 131 females of a low longevity line (LL) were studied from the 1st to the 3rd kindling. Litter size and weight and female body weight were measured at kindling (1st, 2nd and 3rd), insemination (2nd and 3rd) and at weaning (1st and 2nd). The total body electric conductivity (TOBEC) method was used to estimate the body reserves in all females at artificial insemination and...

  4. Effects of parsley supplementation on the seminal quality, blood lipid profile and oxidant status of young and old male rabbits

    El-Gindy, Y.M.; Zeweil, H.S.
    [EN] The high unsaturation levels of spermatozoal membrane make it very susceptible to oxidative damage and this problem increases with advancing age. In this study, the aim is to investigate whether parsley seed (PS) has a protective effect on semen quality, serum lipid profile and antioxidative status of old and young bucks. Male rabbits (n= 36) (18 young 9-12 mo old and 18 old 36-42 mo old) were each assigned to 3 dietary treatments (a control and 2 levels of PS: 0.3 and 0.6 kg/100 kg diet) to evaluate the ability of parsley to enhance bucks’ reproductive status. Most of...

  5. Effects of a short-term feed restriction on growth performance, blood metabolites and hepatic IGF-1 levels in growing rabbits

    Lu, J.; Shen, Y.; He, Z.; Dai, X.; Wang, D.; Zhang, J.; Li, H.
    [EN] A total of 144 weaned hybrid HYLA rabbits (40-day-old) were randomly divided into 4 groups, to investigate the effects of the intensity of one week’s feed restriction on short- and medium-term growth performance, blood metabolites and hepatic IGF-1 in growing rabbits. Restricted groups were fed with 30% (Group L30), 50% (Group L50) 70% (Group L70) of ad libitum feeding for 1 wk and then fed ad libitum until the end of the experiment (75 d of age). The control group (Group AL) was fed ad libitum throughout the experiment. Total feed intake (–15.8%) and feed conversion ratio (–13.2%) were...

  6. Effect of tropical green forage Pueraria phaseoloides addition to a pelleted complete feed on rabbit growth performance and digestion

    Kimsé, M.; Yapi, M.Y.; Karamoko, M.; Gidenne, T.; Zongo, M.; Gnanda, B.I.; Akoutey, A.; Bodji, N.C.; Fantodji, A.; Otchoumou, A.
    [EN] The aim of this work was to study the effect of tropical green forage on rabbit growth performance and apparent digestibility. Thirty rabbits weaned at 35 d of age were individually caged and allotted to 2 dietary treatments. From 35 to 90 d of age, the control group C was fed ad libitum with commercial pelleted diet C only, while the test group was fed the C diet and forage Pueraria phaseoloides (Pp) ad libitum. Individual water and feed intake, body weight gain, nutrient apparent digestibility, red and white blood cells were studied. Mean housing temperature was 27.7°C. Water...

  7. Effect of substituting guinea grass with soybean hulls on production performance and digestion traits in fattening rabbits

    Shang, S.M.; Wu, Z.Y.; Liu, G.Y.; Sun, C.R.; Ma, M.W.; Li, F. C.
    [EN] The objective of this study was to evaluate the use of soybean hulls (SH) to substitute guinea grass (GG), traditionally used as fibre source in the diets of fattening rabbits on performance, coefficients of total tract apparent digestibility (CTTAD) of nutrients, gastrointestinal tract development and caecum fermentation. A total of 160 mixed sex Hyla commercial meat rabbits were allocated to 4 experimental groups (40 per treatment) differing in the SH level inclusion in the diet offered to rabbits from 40 to 90 d of age: 0, 50, 100 and 200 g/kg as-fed basis: SH0, SH50, SH100 and SH200 groups,...

  8. Effect of a lytic bacteriophage on rabbits experimentally infected with pathogenic Escherichia coli

    Zhao, J.; He, L.; Pan, L.; Liu, Y.; Yao, H.; Bao, G.
    [EN] Pathogenic Escherichia coli (E. coli) is severely threatening the rabbit industry in China, and the concern over antibiotic-resistant bacteria has given rise to an urgent need for antibiotic alternatives. In this study, a member (ZRP1) of the Myoviridae family was isolated from rabbit faeces using a strain of rabbit atypical enteropathogenic E. coli (ZR1) as host. The one-step growth curve indicated that the latent period was around 25 to 30 min and the burst size was 144±31 plaque-forming unit/cell. The rate of phage-resistant mutation was 7×10–5±4×10–5. When the bacteriophage input at the multiplicity of infection (MOI) was 0.1, 1...

  9. Dried brewers grains in growing rabbits: nutritional value and effects on performance

    Lima, P.J.D.O.; Watanabe, P.H.; Cândido, R.C.; Ferreira, A.C.S.; Vieira, A.V.; Rodrigues, B.B.V.; Nascimento, G.A.J.; Freitas, E.R.
    [EN] Two assays were carried out to determine i) the nutritional value of dried brewers’ grains and ii) the effects of inclusion of this ingredient in growing rabbit diets on animal performance and economic performance of the breeding unit. In the digestibility assay, a total of 28 male rabbits were distributed in 2 groups differing in the diet offered to animals: a reference diet (35.51% neutral detergent fibre and 16.50% crude protein [CP]) and a test diet (60% of reference diet and 40% of dried brewers grains). The dried brewers’ grain contained 37.9% of CP and 3371 kcal digestible energy/kg...

  10. Abstracts of the 42nd Symposium on Cuniculture, ASESCU Murcia, Spain, 11th-12th May, 2017

    Conferences, Congresses, Symposiums..., Abstracts,
    [EN] The 42nd Congress of the Spanish Association of Cuniculture (ASESCU) was held in Murcia from 11th to 12th May 2017, hosted by the University of Murcia’s Veterinary Faculty. The main papers focussed on analysing the situation of rabbit farming in the Murcia region, the demedicalisation of rabbit health management, a new law on farmers’ organisations and the main presentation forms of infections associated with Staphylococcus aureus. A specific session was devoted to explaining the objectives and progress of the research projects supported by the partnership between the Spanish Institute of Agricultural Research (INIA) and the Rabbit Meat Marketing Board...

  11. Unitary representability of free abelian topological groups

    Uspenskij, Vladimir V.
    [EN] For every Tikhonov space X the free abelian topological group A(X) and the free locally convex vector space L(X) admit a topologically faithful unitary representation. For compact spaces X this is due to Jorge Galindo.

  12. The Jordan curve theorem in the Khalimsky plane

    Bouassida, Ezzeddine
    [EN] The connectivity in Alexandroff topological spaces is equivalent to the path connectivity. This fact gets some specific properties to Z2, equipped with the Khalimsky topology. This allows a sufficiently precise description of the curves in Z2 and permit to prove a digital Jordan curve theorem in Z2.

  13. Spread of balleans

    Filali, Mahmoud; Protasov, Igor V.
    [EN] A ballean is a set endowed with some family of balls in such a way that a ballean can be considered as an asymptotic counterpart of a uniform topological space. We introduce and study a new cardinal invariant called the spread of a ballean. In particular, we show that, for every ordinal ballean B, spread of B coincides with density of B.

  14. Semigroups and their topologies arising from Green's left quasiorder

    Richmond, Bettina
    [EN] Given a semigroup (S, ·), Green’s left quasiorder on S is given by a ≤ b if a = u · b for some u ϵ S1. We determine which topological spaces with five or fewer elements arise as the specialization topology from Green’s left quasiorder for an appropriate semigroup structure on the set. In the process, we exhibit semigroup structures that yield general classes of finite topological spaces, as well as general classes of topological spaces which cannot be derived from semigroup structures via Green’s left quasiorder.

  15. Scott-representability of some spaces of Tall and Miskin

    Bennet, Harold; Lutzer, David
    [EN] In this paper we show that a variation of a technique of Miskin and Tall yields a cocompact completely regular Moore space that is Scott-domain-representable and has a closed Gδ-subspace that is not Scott-domain-representable. This clarifies the general topology of Scott-domain-representable spaces and raises additional questions about Scott-domain representability in Moore spaces.

  16. Review of the book of Vladimir Kovalevsky "Geometry of Locally Finite Spaces"

    Matveev, Sergei
    No abstract.

  17. Probability measure monad on the category of ultrametric spaces

    Hubal, O.B.; Zarichnyi, M.M.
    [EN] The set of all probability measures with compact support on an ultrametric space can be endowed with a natural ultrametric. We show that the functor of probability measures with finite supports (respectively compact supports) forms a monad in the category of ultrametric spaces (respectively complete ultrametric spaces) and nonexpanding maps. It is also proven that the G-symmetric power functor has an extension onto the Kleisli category of the probability measure monad.

  18. On the topology of generalized quotients

    Burzyk, Józef; Ferens, Cezary; Mikusinski, Piotr
    [EN] Generalized quotients are defined as equivalence classes of pairs (x, f), where x is an element of a nonempty set X and f is an element of a commutative semigroup G acting on X. Topologies on X and G induce a natural topology on B(X,G), the space of generalized quotients. Separation properties of this topology are investigated.

  19. On the continuity of factorizations

    Comfort, W.W.; Gotchev, Ivan S.; Recoder-Nuñez, Luis
    [EN] Let {Xi : i ∈ I} be a set of sets, XJ :=Пi∈J Xi when Ø ≠ J ⊆ I; Y be a subset of XI , Z be a set, and f : Y → Z. Then f is said to depend on J if p, q ∈ Y , pJ = qJ ⇒ f(p) = f(q); in this case, fJ : πJ [Y ] → Z is well-defined by the rule f = fJ ◦ πJ|Y When the Xi and Z are spaces and f : Y → Z is continuous with Y dense in XI , several...

  20. On some variations of multifunction continuity

    Kanibir, A.; Reilly, Ivan L.
    [EN] This paper considers six classes of multifunctions between topological spaces, namely almost ℓ−continuous multifunctions, K-almost c−continuous multifunctions, nearly continuous multifunctions, almost nearly continuous multifunctions, super continuous multifunctions, and δ−continuous multifunctions. We relate these classes of multifunctions to others, and provide characterizations of related concepts especially in terms of appropriate changes of topology.

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