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 - 13 de 13

  1. TOWARDS REDUCED FEEDING COSTS, DIETARY SAFETY AND MINIMAL MINERAL EXCRETION IN RABBITS : A REVIEW

    Maertens, L.
    [EN] This article reviews some actual trends in rabbit nutrition. To be more competitive with poultry and pig production, a further reduction of the overall feed conversion rate of rabbitries till 3.25 is necessary. Genetic, management and nutritional improvements are simultaneously possible to achieve this goal and are discussed in this paper. A trend towards phase feeding is observed in rabbit nutrition. Several arguments are given: (i) requirements of fatteners are different shortly after weaning compared to the finishing period; (ii) by matching the dietary protein (amino acids) to the age related requirements, diets with a lower protein level can be fed, resulting in a significan! reduced N-excretion. This is...

  2. SMALL-SCALE RABBIT MEAT PRODUCTION IN THE WESTERN HEMISPHERE : BACK TO BASICS ?

    LUKEFAHR, S.D.
    [EN] In the Western Hemisphere, in countries where the demand for rabbit meat is low, and where intensive livestock production systems are common (e.g., commercial broiler, swine, and cattle production), it may not be appropriate for rabbit scientists to recommend commercial rabbit production. Commercial-scale rabbit operations might only be justified, at best, when located in proximity to processing plants and(or) to large cities where there is a strong tradition of rabbit meat consumption. The high cost of producing rabbits translates into high consumer prices, which tends to limit sales to that of a luxury or specialty commodity. An alternative, "back to basics" approach is to recommend small-scale or backyard rabbit...

  3. RABBIT PRODUCTION IN NIGERIA : SOME ASPECTS OF CURRENT STATUS AND PROMOTIONAL STRATEGIES

    Onifade, A.A.; Abu, O.A.; Obiyan, R.I.; Abanikannda, O.T.F.
    [EN] Sorne aspects of the current status and promotional strategies of rabbit production in Nigeria were appraised in this study. This was because such data are lacking and rabbit production offers a great potential towards attainment of food security in terms of animal protein intake. Data were obtained principally from field survey, questionnaires administration, personal observations and experiences of authors, structured personal interviews of identified rabbit farmers, personal interview and observational data from agricultura! extension agents, personal interview and visitation to markets and retail outlets for rabbit, proxy information from distant collaborators, recorded data from Government establishments and published data. All the information collected was synthesized to provide an informative blend...

  4. FEEDING AND MEAT QUALITY IN RABBITS: A REVIEW

    XICCATO, G.
    [EN] The principal objectives of rabbit feeding strategies are to limit digestive disorders, shorten rearing time and increase dressing percentage. Besides, new attention is placed on the carcass composition in terms of primal joint cut, fat and lean proportions, and on the technological and sensory characteristics of the meat, due to the increasing demand for processed meat. The possibility of modifying carcass and meat quality has been demonstrated to be very Jimited when rabbits are fed a balanced diet ad libítum. Only extreme situations like severe restriction and lack or Jarge excess in a specific nutrient are able to influence slaughter traits and meat characteristics. However, growth performance and health...

  5. ESTIMATES OF GENETIC PARAMETERS IN DANISH WHITE RABBITS USING AN ANIMAL MODEL : I. GROWTH AND CARCASS TRAITS

    Su, G.; Kjaer, J.B.; Brenøe, U.T.; Sørensen, P.
    [EN] Growth data from 2033 individuals and carcass data from 1386 individuals representing 3 Danish rabbit lines were analysed to draw inferences on genetic parameters, using restricted maximum likelihood (REML) procedures based on animal models. In the models, birth year, season, line, parity, sex, litter size at weaning and slaughter age were treated as fixed effects, individual additive genetic and litter were taken as random effects. Litter effects in proportion of phenotypic variance were 0.60, 0.32 and 0.19 for daily gain during pre-weaning (DG1-Js), daily gain during the period from weaning to 90 days (OG3i;.90), and daily gain during the whole period from birth to 90 days (DG1-9o), Growth...

  6. ESTIMATES OF GENETIC PARAMETERS IN DANISH WHITE RABBITS USING AN ANIMAL MODEL : I. GROWTH AND CARCASS TRAITS

    Su, G.; Kjaer, J.B.; Brenøe, U.T.; Sørensen, P.
    [EN] Growth data from 2033 individuals and carcass data from 1386 individuals representing 3 Danish rabbit lines were analysed to draw inferences on genetic parameters, using restricted maximum likelihood (REML) procedures based on animal models. In the models, birth year, season, line, parity, sex, litter size at weaning and slaughter age were treated as fixed effects, individual additive genetic and litter were taken as random effects. Litter effects in proportion of phenotypic variance were 0.60, 0.32 and 0.19 for daily gain during pre-weaning (DG1-Js), daily gain during the period from weaning to 90 days (OG3i;.90), and daily gain during the whole period from birth to 90 days (DG1-9o), Growth...

  7. EGRAN : AN EUROPEAN GROUP FOR RABBIT NUTRITION PRESENTATION AND ACTIVITY

    GIDENNE, T.
    [EN] A work-group on rabbit nutrition, called EGRAN, was constituted on a voluntary basis in 1992. lt involved 6 teams having a continuous research program in rabbit feeding and belonging to 5 European countries. The main objective of EGRAN is to advance in the knowledge of the rabbit nutrition, through the achievement of common research programs. EGRAN also aims to promote scientific and technical cooperation within the group, ranging from scientific theory to basic chemical analysis. Exchange about the scientific program of each team is also encouraged in order to avoid any undesirable duplicate research. Up to date the research program aims to harmonise and to improve the main...

  8. EFFECT OF CHANGE OF CAGE AND/OR 44H MOTHER-LITTER SEPARATION ON PRODUCTIVITY OF NON-RECEPTIVE LACTATING RABBIT DOES. PRELIMINARY INVESTIGATION

    BONANNO, A.; ALABISO, M.; Di GRIGOLI, A.; ALICATA, M.L.
    [EN] The effects of three different bio-stimulation methods, namely change of cage (CC), 44-hour mother-litter separation (MLS) and a combination of the two (CCMLS), for inducing oestrus in nonreceptive lactating does, were compared to the peñormance of receptive lactating does (RO). From March to July, 215 lactating does were taken to males for mating on day 9 after kindling. The 155 RO immediately mated. The does refusing to mate were divided in a balanced manner based body weight and parity and subjected to one of the three bio-stimulations. Receptivity in MLS does (72.7%) was higher than in ce (50.0%) and CCMLS groups (55.5%), and appeared more frequently (45.5%) on day...

  9. EFFECT OF CHANGE OF CAGE AND/OR 44H MOTHER-LITTER SEPARATION ON PRODUCTIVITY OF NON-RECEPTIVE LACTATING RABBIT DOES. PRELIMINARY INVESTIGATION

    BONANNO, A.; ALABISO, M.; Di GRIGOLI, A.; ALICATA, M.L.
    [EN] The effects of three different bio-stimulation methods, namely change of cage (CC), 44-hour mother-litter separation (MLS) and a combination of the two (CCMLS), for inducing oestrus in nonreceptive lactating does, were compared to the peñormance of receptive lactating does (RO). From March to July, 215 lactating does were taken to males for mating on day 9 after kindling. The 155 RO immediately mated. The does refusing to mate were divided in a balanced manner based body weight and parity and subjected to one of the three bio-stimulations. Receptivity in MLS does (72.7%) was higher than in ce (50.0%) and CCMLS groups (55.5%), and appeared more frequently (45.5%) on day...

  10. EARLY PREGNANCY DIAGNOSIS IN THE RABBIT BY REAL TIME ULTRASONOGRAPHY

    YPSILANTIS, P.; SARATSIS, PH.
    [EN] An ultrasonographic method for the diagnosis of early pregnancy in the rabbit is presented. New Zealand White does were artificially inseminated and their uteri were ultrasonographically examined on days 7, 8, 9 and 10 post insemination. On day 7, a low echogenicity area, located in the uterine lumen, could be regarded as an indication of pregnancy. However, on day 8, embryonic vesicles with a diameter of · about 8 mm were identifiable and countable. On day 9, embryonic vesicles developed up to a diameter of about 12 mm. Finally, on day 1 O, embryonic vesicles' diameter was around 17 mm and their embryonic pole was also identifiable.

  11. EARLY PREGNANCY DIAGNOSIS IN THE RABBIT BY REAL TIME ULTRASONOGRAPHY

    YPSILANTIS, P.; SARATSIS, PH.
    [EN] An ultrasonographic method for the diagnosis of early pregnancy in the rabbit is presented. New Zealand White does were artificially inseminated and their uteri were ultrasonographically examined on days 7, 8, 9 and 10 post insemination. On day 7, a low echogenicity area, located in the uterine lumen, could be regarded as an indication of pregnancy. However, on day 8, embryonic vesicles with a diameter of · about 8 mm were identifiable and countable. On day 9, embryonic vesicles developed up to a diameter of about 12 mm. Finally, on day 1 O, embryonic vesicles' diameter was around 17 mm and their embryonic pole was also identifiable.

  12. AIR TRANSFER OF DAY-OLD RABBITS INTO TRINIDAD (WEST INDIES)

    Rastogi, R.K.
    [FR] Cinq lapereaux d'un jour ont été transportés par avion du Département fran~is de la Guadeloupe (Petites Antilles) a Trinidad. Le transport a duré 7 heures. Deux heures aprés leur arrivée, ils ont été adoptés par 2 lapines dont la mise bas avait été synchronisée avec celle des meres génétiques. Les lapereaux ont été sevrés a 28 jours et aucune perte n'a été déplorée jusqu'a rage de 24 semaines et un polds moyen de 2,8 kg. Le probléme de la législation du transport est évoq

  13. AIR TRANSFER OF DAY-OLD RABBITS INTO TRINIDAD (WEST INDIES)

    Rastogi, R.K.
    [FR] Cinq lapereaux d'un jour ont été transportés par avion du Département fran~is de la Guadeloupe (Petites Antilles) a Trinidad. Le transport a duré 7 heures. Deux heures aprés leur arrivée, ils ont été adoptés par 2 lapines dont la mise bas avait été synchronisée avec celle des meres génétiques. Les lapereaux ont été sevrés a 28 jours et aucune perte n'a été déplorée jusqu'a rage de 24 semaines et un polds moyen de 2,8 kg. Le probléme de la législation du transport est évoq

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.