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 - 10 de 10

  1. THE USE OF SOYA BEAN HULLS IN RABBIT FEEDING : A REVIEW

    Blas, J.C. de; Carabaño, R.; Nicomedus, N.; García, J.; Mateos, G.G.
    [EN] Recen! information about the nutritive value of soya bean hulls (SBH) for rabbits is reviewed in this paper. According to the results presented, DE content of SBH (1720 kcal/kg) is similar to that of alfalfa hay. Soya bean hulls can be included in fattening diets up to levels of 27% without negative effects on performance. However, higher levels of inclusion lead to an accumulation of digesta in the caecum that impairs feed intake and weight gain. The use of a combination of SBH with grape seed meal allows to include up to a 32.5% of SBH in the diet of lactating does without any impairment of performance.

  2. THE USE OF SOYA BEAN HULLS IN RABBIT FEEDING : A REVIEW

    de Blas, J.C.; Carabaño, R.; Nicomedus, N.; García, J.; Mateos, G.G.
    [EN] Recen! information about the nutritive value of soya bean hulls (SBH) for rabbits is reviewed in this paper. According to the results presented, DE content of SBH (1720 kcal/kg) is similar to that of alfalfa hay. Soya bean hulls can be included in fattening diets up to levels of 27% without negative effects on performance. However, higher levels of inclusion lead to an accumulation of digesta in the caecum that impairs feed intake and weight gain. The use of a combination of SBH with grape seed meal allows to include up to a 32.5% of SBH in the diet of lactating does without any impairment of performance.

  3. THE CURRENT SITUATION IN RABBIT PRODUCTION IN HUNGARY

    Szendrõ, Zs.; Bleyer, F.
    [EN] At present slaughter rabbit production in Hungary is 6 651 tonnes - less than half of that achieved in the peak years of 1982 and 1991. In 1998 live rabbit production amounted to a total of 13 903 tonnes. This production is exported in its entirety; there is practically no rabbit meat on the domestic market. Previously approx. 90% of rabbits slaughtered were sold to ltaly. At present ltaly accounts for 65-70% of Hungarian rabbit exports and Switzerland for 20-25%. The export of live rabbits practically ceased in 1986. In 1998 export shipments comprised 68% whole carcasses and 32% meat products. The majority of Hungarian rabbit abattoirs are...

  4. MÉTHODE DE DÉTERMINATION PAR TAMISAGE EN PHASE LIQUIDE DE LA TAILLE DES PARTICULES CONTENUES DANS UN ALIMENT GRANULÉ POUR LAPINS

    Lebas, F.; Lamboley, B.
    [EN] A method is proposed to determine the size of the particles contained in rabbit feeds presented in agglomerated form (pellets). The various stages of development of the method are described. The technique finally selected includes initially a step of particle separation of 30 g of pellets placed in 600 mi of water. This separation is helped by a ultrasound treatments of 2 times 1 O minutes separated by 1 O minutes of rest. The mixture of water + food is then filtered on a 3-dimensional vibrating sifter with 2800 oscillations per minute. lt is provided with 1 to 4 sieves of a diameter of 200 mm. The...

  5. ESTIMATION OF DIGESTIBILITY OF COMPOUND DIETS FOR RABBITS USING THE IN VITRO GAS PRODUCTION TECHNIQUE

    Calabrò, S.; Nizza, A.; Pinna, W.; Cutrignelli, M.I.; Piccolo, V.
    [EN] The in vitro gas production technique was used to predict the digestibility of ten diets in rabbits. Using a step-wise linear regression approach, relationships were established between the in vivo coefficients of digestibility of dry matter (dDM), organic matter (dOM) and energy (dGE) and in vitro organic matter losses (OM~ and potential gas production (A, ml.g-1). The best prediction equation was: dDM (%) = - 40.2 + 1.026 OM/(%) + 0.150 A (ml.g-1 ) (R2 = 0.748 and RSD = 3.66). In conclusion the results suggest that the in vitro gas production technique could be a promising method to predict the nutritive value of rabbit diets. Nevertheless because...

  6. ENVIRONMENTAL AND PHYSIOLOGICAL FACTORS INFLUENCING KINDLING RATES AND LITTER SIZE AT BIRTH IN ARTIFICIALLY INSEMINATED DOE RABBITS

    Rodríguez de Lara, R.; Fallas, L.M.
    [EN] A total of 713 inseminations and 431 kindling records were used for statistical analysis to determine the fixed effects of season, sexual receptivity and physiological status on kindling rates (KR) and total born per litter (TB). Rabbits were reared in México under a moderate climate located at 2240 m above sea leve! with an average yearly temperature of 15ºC. Eighty four New Zealand White rabbits two months of age were reared in a 64-cage replacement system and bred throughout a one-year reproduction cycle. Does kept in 32 cages were inseminated regularly 4-8 days after parturition while does maintained in the other 32 cages were under a 9-13 days...

  7. EFFECT OF DIETARY SUPPLEMENTATION WITH a-TOCOPHERYL ACETATE AND ASCORBIC ACID ON QUALITATIVE CHARACTERISTICS AND FERTILIZING ABILITY OF RABBIT SEMEN

    Castellini, C.; Lattaioli, P.; Bernardini, M.
    [EN]The aim of the present work was to verify the effect of atocopheryl acetate addition - 50 vs 200 mg kg-1 - and ascorbic acid - O vs 1 mg L-1 - on the characteristics of rabbit semen and its fertilizing ability. The single supplementation of vitamin E and C, compared to the control diet, did not modify semen traits, while the association of E+C significantly improved the kinetics of spermatozoa (60.73 vs 57.09 μm sec-1 - path velocity) but without any effect on the fertility rate (70.00 vs 70.66 %). The results confirm that the standard recommendations far vitamin E and C are adequate if fresh semen is used.

  8. Abstracts of papers presented during the 11th HUNGARIAN CONFERENCE ON RABBIT PRODUCTION: Kaposvár, Hungary. May 1999.

    World Rabbit Science
    Abstract not available.

  9. Abstracts of papers presented during the 11th HUNGARIAN CONFERENCE ON RABBIT PRODUCTION: Kaposvár, Hungary. May 1999.

    World Rabbit Science
    (1999). Abstracts of papers presented during the 11th HUNGARIAN CONFERENCE ON RABBIT PRODUCTION: Kaposvár, Hungary. May 1999. http://hdl.handle.net/10251/10275.

  10. A REVIEW OF LUTEOLYTIC AND LUTEOTROPHIC EFFECTS OF PROSTAGLANDINS ON THE CORPUS LUTEUM OF PSEUDOPREGNANT RABBITS : SOME IN VIVO AND IN VITRO INSIGHTS

    Boiti, C.
    [EN] For many years prostaglandin E2 and prostaglandin F2a have been known to exert luteotrophic and luteolytic actions on the corpus luteum (CL) of most mammalian species. Although the modalities by which the CL regulates normal reproductive cycles and maintenance of pregnancy are basically similar, increasing evidence suggests that severa! unique mechanisms regulating the growth and regression of CL exist between different species. In this respect, the corpus luteum of rabbits has not been as extensively studied as that of other farm or laboratory animals and very often the experimental data conflict. This reviews presents what is currently known about the actions of these two prostaglandins by critically examining their...

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