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 - 15 de 15

  1. Les teignes des lapins et leur traitement en France: une synthèse.

    Boucher, S.; Nouaille, L.
    [EN] In the rabbit, dermatophytosis (ringworm, favus) is mainly caused by two types of fungi, Mícrosporum canis and Trichophyton mentagrophytes, and infrequently by Microsporum gypseum. Fungus develops inside of the epidermis at a skin lesion after initial contamination by one spore or a mycelium fragment. For its development, the mycelium uses skin and hair keratin as substrate. Source of contamination is generally an infected animal (a rabbit but also a cat, a dog, a mouse, ... ) by direct contact or through its hair or skin particles. Raising conditions with excessive temperature, humidity or density favour development of the disease. Dermatophytosis may show a dry, and more or less circular...

  2. Les teignes des lapins et leur traitement en France: une synthèse.

    Boucher, S.; Nouaille, L.
    [EN] In the rabbit, dermatophytosis (ringworm, favus) is mainly caused by two types of fungi, Mícrosporum canis and Trichophyton mentagrophytes, and infrequently by Microsporum gypseum. Fungus develops inside of the epidermis at a skin lesion after initial contamination by one spore or a mycelium fragment. For its development, the mycelium uses skin and hair keratin as substrate. Source of contamination is generally an infected animal (a rabbit but also a cat, a dog, a mouse, ... ) by direct contact or through its hair or skin particles. Raising conditions with excessive temperature, humidity or density favour development of the disease. Dermatophytosis may show a dry, and more or less circular...

  3. ESTIMATES OF GENETIC PARAMETERS IN DANISH WHITE RABBITS USING AN ANIMAL MODEL : II. LITTER TRAITS

    S0RENSEN, P.; KJAER, J.B.; BREN0E, U.T.; SU, G.
    [EN] Data from about 1000 litters were analysed to draw inferences of genetic parameters for doe litter traits, using restricted maximum likelihood (REML) procedures based on a doe repeatability model. The traits under analyses were litter size at parturition (LSB = 9.53 on average), litter size at weaning (LSW = 7.63), mortality during pre-weaning (Mort =18,02%), average offspring body weight at weaning (ABW = 7 40 g), and total litter weight at weaning (L TW = 5557 g). The statislical model contained a permanent environmental effect and that was significant for only LSW (0.106). The estimates of heritabilities were 0.188, 0.081, 0.113, 0.196 and 0.194 for LSB, LSW, Mort,...

  4. ESTIMATES OF GENETIC PARAMETERS IN DANISH WHITE RABBITS USING AN ANIMAL MODEL : II. LITTER TRAITS

    S0RENSEN, P.; KJAER, J.B.; BREN0E, U.T.; SU, G.
    [EN] Data from about 1000 litters were analysed to draw inferences of genetic parameters for doe litter traits, using restricted maximum likelihood (REML) procedures based on a doe repeatability model. The traits under analyses were litter size at parturition (LSB = 9.53 on average), litter size at weaning (LSW = 7.63), mortality during pre-weaning (Mort =18,02%), average offspring body weight at weaning (ABW = 7 40 g), and total litter weight at weaning (L TW = 5557 g). The statislical model contained a permanent environmental effect and that was significant for only LSW (0.106). The estimates of heritabilities were 0.188, 0.081, 0.113, 0.196 and 0.194 for LSB, LSW, Mort,...

  5. EFFETS DE L'ADDITION DE PROPYLENE GLYCOL DANS L'EAU DE BOISSON SUR LES PERFORMANCES DE REPRODUCTION DES LAPINES 1

    LUZI, F.; BARBIERI, S.; LAZZARONI, C.; CAVANI, C.; ZECCHINI, M.; CRIMELLA, C.
    [EN] Over a 9 months trial, the effect of propylene glycol (PG) added to drinking water (2%) to improve the reproductive peñormance of does was studied in a commercial rabbitry. Five reproduction cycles were evaluated on a group of 150 does (nulliparous, primiparous and multiparous), normally inseminated (Al) 11 days post-partum. Two methods to induce oestrus were compared to a control group: PMSG (20 UI by subcutaneous injection, 72 h before Al) and PG (2% in drinking water, over 4 days before Al). The number of total born, born alive and weaned kits, as the litter weight at weaning were not influenced by the treatments. lnstead, the kindling...

  6. EFFETS DE L'ADDITION DE PROPYLENE GLYCOL DANS L'EAU DE BOISSON SUR LES PERFORMANCES DE REPRODUCTION DES LAPINES 1

    LUZI, F.; BARBIERI, S.; LAZZARONI, C.; CAVANI, C.; ZECCHINI, M.; CRIMELLA, C.
    [EN] Over a 9 months trial, the effect of propylene glycol (PG) added to drinking water (2%) to improve the reproductive peñormance of does was studied in a commercial rabbitry. Five reproduction cycles were evaluated on a group of 150 does (nulliparous, primiparous and multiparous), normally inseminated (Al) 11 days post-partum. Two methods to induce oestrus were compared to a control group: PMSG (20 UI by subcutaneous injection, 72 h before Al) and PG (2% in drinking water, over 4 days before Al). The number of total born, born alive and weaned kits, as the litter weight at weaning were not influenced by the treatments. lnstead, the kindling...

  7. EFFETS DE L'ADDITION DE PROPYLENE GLYCOL DANS L'EAU DE BOISSON SUR LES PERFORMANCES DE REPRODUCTION DES LAPINES 1

    LUZI, F.; BARBIERI, S.; LAZZARONI, C.; CAVANI, C.; ZECCHINI, M.; CRIMELLA, C.
    [EN] Over a 9 months trial, the effect of propylene glycol (PG) added to drinking water (2%) to improve the reproductive peñormance of does was studied in a commercial rabbitry. Five reproduction cycles were evaluated on a group of 150 does (nulliparous, primiparous and multiparous), normally inseminated (Al) 11 days post-partum. Two methods to induce oestrus were compared to a control group: PMSG (20 UI by subcutaneous injection, 72 h before Al) and PG (2% in drinking water, over 4 days before Al). The number of total born, born alive and weaned kits, as the litter weight at weaning were not influenced by the treatments. lnstead, the kindling...

  8. EFFECT OF SOME BIOLOGICAL AND ZOOTECHNICAL FACTORS ON APPEARANCE OF GIANT FIBRES IN THE RABBIT. CONSEQUENCES ON MUSCLE FIBRE TYPE, MORPHOLOGY AND MEAT QUALITY

    Dalle Zotte, A.; Remignon, H.; Ouhayoun, J.
    [EN] Three experiments were carried out to investigate the contribution of sorne factors on the frequency of appearance and on histochemical and morphological traits of giant fibres (GF), and the effect of the GF presence on muscle fibre type and morphology and on meat quality. Experiment 1 tested the effect of the type of muscle (bíceps femoris - BF, gastrocnemius media/is - GM, so/eus - SOL, semimembronosus proprius - SMP, longissimus /umborum - LL, psoas major - PM). Experiment 2 considered the age at slaughter (5, 8 and 11 weeks) and feeding restriction (ad libitum: until 5 weeks of age, followed by slaughter; L-H: 70% ad libitum from 5...

  9. EFFECT OF SOME BIOLOGICAL AND ZOOTECHNICAL FACTORS ON APPEARANCE OF GIANT FIBRES IN THE RABBIT. CONSEQUENCES ON MUSCLE FIBRE TYPE, MORPHOLOGY AND MEAT QUALITY

    Dalle Zotte, A.; Remignon, H.; Ouhayoun, J.
    [EN] Three experiments were carried out to investigate the contribution of sorne factors on the frequency of appearance and on histochemical and morphological traits of giant fibres (GF), and the effect of the GF presence on muscle fibre type and morphology and on meat quality. Experiment 1 tested the effect of the type of muscle (bíceps femoris - BF, gastrocnemius media/is - GM, so/eus - SOL, semimembronosus proprius - SMP, longissimus /umborum - LL, psoas major - PM). Experiment 2 considered the age at slaughter (5, 8 and 11 weeks) and feeding restriction (ad libitum: until 5 weeks of age, followed by slaughter; L-H: 70% ad libitum from 5...

  10. EFFECT OF DIFFERENT FEED RESTRICTIONS DURING REARING ON PRODUCTION PERFORMANCE IN RABBIT DOES

    Eiben, Cs.; Kustos, K.; Kenessey, A.; Virág, Gy.; Szendrõ, Zs.
    [EN] Ad libitum fed ten-week-old littermate female NZW rabbits were divided into four equal groups (n=4 x 50) based on their body weight. They were raised during the next 7 to 12 weeks as follows: a control group with ad libitum feeding (C); access to a restricted 130 g daily feed portion per head until 17 weeks of age and 140 g/day until first insemination (130R); one day (24 hours) fasting every week (10); 9 hours' daily access to the diet (9H). When the young does reached 75 to 80% of adult weight (3.4 to 3.5 kg, between 17 and 22 wk of age), the feed supply returned...

  11. EFFECT OF DIFFERENT FEED RESTRICTIONS DURING REARING ON PRODUCTION PERFORMANCE IN RABBIT DOES

    Eiben, Cs.; Kustos, K.; Kenessey, A.; Virág, Gy.; Szendrõ, Zs.
    [EN] Ad libitum fed ten-week-old littermate female NZW rabbits were divided into four equal groups (n=4 x 50) based on their body weight. They were raised during the next 7 to 12 weeks as follows: a control group with ad libitum feeding (C); access to a restricted 130 g daily feed portion per head until 17 weeks of age and 140 g/day until first insemination (130R); one day (24 hours) fasting every week (10); 9 hours' daily access to the diet (9H). When the young does reached 75 to 80% of adult weight (3.4 to 3.5 kg, between 17 and 22 wk of age), the feed supply returned...

  12. EFFECT OF DIFFERENT FEED RESTRICTIONS DURING REARING ON PRODUCTION PERFORMANCE IN RABBIT DOES

    Eiben, Cs.; Kustos, K.; Kenessey, A.; Virág, Gy.; Szendrõ, Zs.
    [EN] Ad libitum fed ten-week-old littermate female NZW rabbits were divided into four equal groups (n=4 x 50) based on their body weight. They were raised during the next 7 to 12 weeks as follows: a control group with ad libitum feeding (C); access to a restricted 130 g daily feed portion per head until 17 weeks of age and 140 g/day until first insemination (130R); one day (24 hours) fasting every week (10); 9 hours' daily access to the diet (9H). When the young does reached 75 to 80% of adult weight (3.4 to 3.5 kg, between 17 and 22 wk of age), the feed supply returned...

  13. DETERMINATION OF THE NUMBER OF REPLICATES REQUIRED TO DETECT A SIGNIFICANT DIFFERENCE BETWEEN TWO MEANS IN RABBIT TRAITS

    García, J.; Nicomedus, N.; Carabaño, R.; Villamide, M.J.; Blas, Carlos de
    [EN] The number of replicates required to detect differences of variable size at severa! levels of significance, has been determined for growth, lactation and digestion traits from the equation : n ~ s2 x t2 x 2Jd2 • Residual standard deviation (s) values have been derived from results obtained with rabbits in our Research Department. An average value of s = 3.93 g/day has been obtained, for instance, in the case of average daily gain, for the average experimental conditions in our laboratory, and from a model including weaning weight as covariate and litter as block effect. This s value increased up to 5.38 when neither covariate nor block was considered...

  14. A CRITICAL APPROACH OF THE CALCULATION PROCEDURES TO BE USED IN DIGESTIBILITY DETERMINATION OF FEED INGREDIENTS FOR RABBITS

    Villamide, M.J.; Maertens, L.; Cervera, C.; Perez, J.M.; Xiccato, G.
    [EN] The effect of differences between tested ingredient and basal diet dry matter content and the effect of premix inclusion on the digestible nutrient content of tested feedstuffs are analysed. The calculation procedures to be followed in digestibility evaluation assays of feed ingredients far rabbits are also described by means of examples. The impact of dry matter correction on the estimation of the digestible nutrient content of tested ingredient increases with increasing of differences between the dry matter content of basal diet and tested ingredient, and between the nutrient content of basal and test diet, and with decreasing substitution rate, varying from 0.05% to 9%. Premix correction increases the...

  15. A CRITICAL APPROACH OF THE CALCULATION PROCEDURES TO BE USED IN DIGESTIBILITY DETERMINATION OF FEED INGREDIENTS FOR RABBITS

    Villamide, M.J.; Maertens, L.; Cervera, C.; Perez, J.M.; Xiccato, G.
    [EN] The effect of differences between tested ingredient and basal diet dry matter content and the effect of premix inclusion on the digestible nutrient content of tested feedstuffs are analysed. The calculation procedures to be followed in digestibility evaluation assays of feed ingredients far rabbits are also described by means of examples. The impact of dry matter correction on the estimation of the digestible nutrient content of tested ingredient increases with increasing of differences between the dry matter content of basal diet and tested ingredient, and between the nutrient content of basal and test diet, and with decreasing substitution rate, varying from 0.05% to 9%. Premix correction increases the...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.