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 - 20 de 23

  1. INTERNATIONAL COLLABORATION IN RABBIT REPRODUCTION RESEARCH:PRESENTATION OF THE IRRG GROUP.

    BOITI, C.
    Abstract not available.

  2. INTERNATIONAL COLLABORATION IN RABBIT REPRODUCTION RESEARCH:PRESENTATION OF THE IRRG GROUP.

    BOITI, C.
    Abstract not available.

  3. EVALUATION OF APPLICATION OF THE INTENSIVE RABBIT PRODUCTION SYSTEM UNDER THE SUB-TROPICAL CONDITIONS OF EGYPT.

    Ayyat, M.S.; Marai, I.F.M.
    [EN] The study included 747 litters obtained from 173 New ~aland White (NZW) does, during one calendar year. Mating was 1rried out at the start of the breeding season (October), then on the 1cond day after kindling. Pregnancy diagnosis was carried out ten 1ys after service and the empty does were rebred in the sama day. 1e results showed that the highest percentage of litters carne from atings carried out within the first ten days after kindling (55.4%), llowed by those matad> 30 days (18.1%), 11 - 20 days (14.7%) id 21 - 30 days (11.9%) after kindling. The effects of open days amating interval) on most of the...

  4. EVALUATION OF APPLICATION OF THE INTENSIVE RABBIT PRODUCTION SYSTEM UNDER THE SUB-TROPICAL CONDITIONS OF EGYPT.

    Ayyat, M.S.; Marai, I.F.M.
    [EN] The study included 747 litters obtained from 173 New ~aland White (NZW) does, during one calendar year. Mating was 1rried out at the start of the breeding season (October), then on the 1cond day after kindling. Pregnancy diagnosis was carried out ten 1ys after service and the empty does were rebred in the sama day. 1e results showed that the highest percentage of litters carne from atings carried out within the first ten days after kindling (55.4%), llowed by those matad> 30 days (18.1%), 11 - 20 days (14.7%) id 21 - 30 days (11.9%) after kindling. The effects of open days amating interval) on most of the...

  5. EFFECT OF MOTHER-LITTER SEPARATION FOR 24 HOURS, BY CLOSING THE NESTBOX OR CHANGE OF CAGE, ON RABBIT DOE REPRODUCTION PERFORMANCE.

    Castellini, C.; Canali, C.; Boiti, C.
    [EN] The effect of 2 different techniques of mother-litter separation on rabbit doe performance was analysed. In the first experiment, executed in a commercial rabbitry, multiparous lactating hybrid does were successively artificially inseminated (620 Al) while in the second, a flock of 100 nulliparous was followed (524 Al). Does Nere submitted to one of the following treatments: control no treatment; 24 hours of mother-litter separation, 3 days befare Al, with 2 different procedures: closing the nestbox (Experiment 1) and change of caga (Experiment 2). AH the does were inseminated 11 days after kindling. Mother-litter separation did not significantly affect reproductiva results while, as expected, sexual receptivity and physiological status strongly...

  6. EFFECT OF MOTHER-LITTER SEPARATION FOR 24 HOURS, BY CLOSING THE NESTBOX OR CHANGE OF CAGE, ON RABBIT DOE REPRODUCTION PERFORMANCE.

    Castellini, C.; Canali, C.; Boiti, C.
    [EN] The effect of 2 different techniques of mother-litter separation on rabbit doe performance was analysed. In the first experiment, executed in a commercial rabbitry, multiparous lactating hybrid does were successively artificially inseminated (620 Al) while in the second, a flock of 100 nulliparous was followed (524 Al). Does Nere submitted to one of the following treatments: control no treatment; 24 hours of mother-litter separation, 3 days befare Al, with 2 different procedures: closing the nestbox (Experiment 1) and change of caga (Experiment 2). AH the does were inseminated 11 days after kindling. Mother-litter separation did not significantly affect reproductiva results while, as expected, sexual receptivity and physiological status strongly...

  7. EFFECT OF MOTHER-LITTER SEPARATION AND PMSG ON THE FERTILITY OF LACTATING DOES AND THE PERFORMANCE OF THEIR LITTER.

    MAERTENS, L.
    [EN] Two batches of 80 does each were inseminated (Al) 11 d post parturition during 1 O months in arder to judge the effect of oestrus synchronisation of lactating does. Three different methods were comparad with the not treated control: a separation motheryoung during 40 h befare Al, a 4 d. flushing prior to the Al with an energetic diet and a PMSG treatment (20 IU, 2 days befare Al ). A total of 991 inseminations, exclusively of lactating does, were analysed. After a 40 h separation, both receptivity and fertility (78.8 and 78.0%, respectively) were signlficantly higher (P<0.01) than the control (40.8 and 66.9%) and comparable with the...

  8. EFFECT OF MOTHER-LITTER SEPARATION AND PMSG ON THE FERTILITY OF LACTATING DOES AND THE PERFORMANCE OF THEIR LITTER.

    MAERTENS, L.
    [EN] Two batches of 80 does each were inseminated (Al) 11 d post parturition during 1 O months in arder to judge the effect of oestrus synchronisation of lactating does. Three different methods were comparad with the not treated control: a separation motheryoung during 40 h befare Al, a 4 d. flushing prior to the Al with an energetic diet and a PMSG treatment (20 IU, 2 days befare Al ). A total of 991 inseminations, exclusively of lactating does, were analysed. After a 40 h separation, both receptivity and fertility (78.8 and 78.0%, respectively) were signlficantly higher (P<0.01) than the control (40.8 and 66.9%) and comparable with the...

  9. EFFECT OF MOTHER-LITTER SEPARATION ON REPRODUCTIVE PERFORMANCE OF LACTATING RABBIT FEMALES INSEMINATED ON DAY 4 OR 11 POST PARTUM.

    Alvariño, J.M.R.; Arco, J.A. Del; Bueno, A.
    [EN] Biostimulation of lactating rabbit females, through time limitad controlled lactation, was comparad to a conventional PMSG treatment. Experimental groups were composed with females separated from their litters for O, 24, 36 or 48 hours befare being inseminated on day 4 or 11 post partum. When biostimulation was applied, results were improved comparad to non-stimulated females, especially fertility on day 4 post partum, after more than 24 hours of mother-litter separation (P<0.01 ). In either the 35 or 42 days reproductiva rhythm, a single mother-litter separation for at least 36 hours, prior to Al, resultad in comparable fertility and prolificacy to those obtained in females treated with 20 IU...

  10. EFFECT OF MOTHER-LITTER SEPARATION ON REPRODUCTIVE PERFORMANCE OF LACTATING RABBIT FEMALES INSEMINATED ON DAY 4 OR 11 POST PARTUM.

    Alvariño, J.M.R.; Arco, J.A. Del; Bueno, A.
    [EN] Biostimulation of lactating rabbit females, through time limitad controlled lactation, was comparad to a conventional PMSG treatment. Experimental groups were composed with females separated from their litters for O, 24, 36 or 48 hours befare being inseminated on day 4 or 11 post partum. When biostimulation was applied, results were improved comparad to non-stimulated females, especially fertility on day 4 post partum, after more than 24 hours of mother-litter separation (P<0.01 ). In either the 35 or 42 days reproductiva rhythm, a single mother-litter separation for at least 36 hours, prior to Al, resultad in comparable fertility and prolificacy to those obtained in females treated with 20 IU...

  11. EFFECT OF MOTHER-LITTER SEPARATION ON REPRODUCTIVE PERFORMANCE OF LACTATING RABBIT FEMALES INSEMINATED ON DAY 4 OR 11 POST PARTUM.

    Alvariño, J.M.R.; Arco, J.A. Del; Bueno, A.
    [EN] Biostimulation of lactating rabbit females, through time limitad controlled lactation, was comparad to a conventional PMSG treatment. Experimental groups were composed with females separated from their litters for O, 24, 36 or 48 hours befare being inseminated on day 4 or 11 post partum. When biostimulation was applied, results were improved comparad to non-stimulated females, especially fertility on day 4 post partum, after more than 24 hours of mother-litter separation (P<0.01 ). In either the 35 or 42 days reproductiva rhythm, a single mother-litter separation for at least 36 hours, prior to Al, resultad in comparable fertility and prolificacy to those obtained in females treated with 20 IU...

  12. EFFECT OF CHANGE OF CAGE 2 DAYS BEFORE ARTIFICIAL INSEMINATION ON REPRODUCTIVE PERFORMANCE OF RABBIT DOES.

    LUZI, F.; CRIMELLA, C.
    [EN] During 6 months, 1552 artificial inseminations (Al) were carried out to compare three different techniques to induce oestrous in rabbit females. The first method consisted of transferring the female and its litter if any to another cage 2 days before Al (biostimulated group), the other two were based on hormonal treatments: does were either treated with 20 IU PMSG 72 hours before Al ora combination of 16 IU PMSG and 8 IU hCG (0.2 mi i.m.) injected 48 hours before Al. A control group of does was not treated. Results showed that the different treatments and the physiological status of females statistically influenced fertility and the number of...

  13. EFFECT OF CHANGE OF CAGE 2 DAYS BEFORE ARTIFICIAL INSEMINATION ON REPRODUCTIVE PERFORMANCE OF RABBIT DOES.

    LUZI, F.; CRIMELLA, C.
    [EN] During 6 months, 1552 artificial inseminations (Al) were carried out to compare three different techniques to induce oestrous in rabbit females. The first method consisted of transferring the female and its litter if any to another cage 2 days before Al (biostimulated group), the other two were based on hormonal treatments: does were either treated with 20 IU PMSG 72 hours before Al ora combination of 16 IU PMSG and 8 IU hCG (0.2 mi i.m.) injected 48 hours before Al. A control group of does was not treated. Results showed that the different treatments and the physiological status of females statistically influenced fertility and the number of...

  14. EFFECT OF CHANGE OF CAGE 2 DAYS BEFORE ARTIFICIAL INSEMINATION ON REPRODUCTIVE PERFORMANCE OF RABBIT DOES.

    LUZI, F.; CRIMELLA, C.
    [EN] During 6 months, 1552 artificial inseminations (Al) were carried out to compare three different techniques to induce oestrous in rabbit females. The first method consisted of transferring the female and its litter if any to another cage 2 days before Al (biostimulated group), the other two were based on hormonal treatments: does were either treated with 20 IU PMSG 72 hours before Al ora combination of 16 IU PMSG and 8 IU hCG (0.2 mi i.m.) injected 48 hours before Al. A control group of does was not treated. Results showed that the different treatments and the physiological status of females statistically influenced fertility and the number of...

  15. DIFFERENT SERUM COMPLEMENTS AFFECT THE IN VITRO DEVELOPMENT AND HATCHING RATES OF RABBIT ZYGOTES. A TECHNICAL NOTE.

    Escribá, M.J.; García-Ximénez, F.
    [EN] The effect of two different types of serum supplements l Ham's F-1 O medium on the development of rabbit zygotes to the 1lastocyst stage was tested. The in vitro development was improved ihen ovulated-doe serum, instead young-rabbit serum was added to lam's F-10 medium. The development to the 16-cell, compactad norula-early blastocyst, blastocyst or hatched stage at 24, 48 and 168 hours of culture were 44%, 54%, 100% and 92% vs 0%, 19%, 75% and 56%, respectively. Moreover, the established conditions of culture (39•C, 7% co2 in air and 15 mM sodium bicarbonate) associated with the ovulated-doe serum in Ham's F-1 O could enhance the in vítro development...

  16. DIFFERENT SERUM COMPLEMENTS AFFECT THE IN VITRO DEVELOPMENT AND HATCHING RATES OF RABBIT ZYGOTES. A TECHNICAL NOTE.

    Escribá, M.J.; García-Ximénez, F.
    [EN] The effect of two different types of serum supplements l Ham's F-1 O medium on the development of rabbit zygotes to the 1lastocyst stage was tested. The in vitro development was improved ihen ovulated-doe serum, instead young-rabbit serum was added to lam's F-10 medium. The development to the 16-cell, compactad norula-early blastocyst, blastocyst or hatched stage at 24, 48 and 168 hours of culture were 44%, 54%, 100% and 92% vs 0%, 19%, 75% and 56%, respectively. Moreover, the established conditions of culture (39•C, 7% co2 in air and 15 mM sodium bicarbonate) associated with the ovulated-doe serum in Ham's F-1 O could enhance the in vítro development...

  17. DIFFERENT SERUM COMPLEMENTS AFFECT THE IN VITRO DEVELOPMENT AND HATCHING RATES OF RABBIT ZYGOTES. A TECHNICAL NOTE.

    Escribá, M.J.; García-Ximénez, F.
    [EN] The effect of two different types of serum supplements l Ham's F-1 O medium on the development of rabbit zygotes to the 1lastocyst stage was tested. The in vitro development was improved ihen ovulated-doe serum, instead young-rabbit serum was added to lam's F-10 medium. The development to the 16-cell, compactad norula-early blastocyst, blastocyst or hatched stage at 24, 48 and 168 hours of culture were 44%, 54%, 100% and 92% vs 0%, 19%, 75% and 56%, respectively. Moreover, the established conditions of culture (39•C, 7% co2 in air and 15 mM sodium bicarbonate) associated with the ovulated-doe serum in Ham's F-1 O could enhance the in vítro development...

  18. BIOSTIMULATIONS APPLIED TO RABBIT REPRODUCTION: THEORY AND PRACTICE.

    Theau- Clément, M.; Castellini, C.; Maertens, L.; Boiti, C.
    [EN] Rabbit artificial insemination is now commonly practised in European countrles. In arder to maintain a "natural image" of rabbit meat and to be consistent with animal welfare, authors discuss the interest of biostimulation methods defined in opposition with "gonadotrophin treatment" to improve sexual receptivity of does at the moment of insemination. They first comment how at a physiological level biostimulations can improve reproduction performance. In a second part, they draw up the balance-sheet of their use in zootechnical species and rabbits. They concluded that these methods have to be easy to apply, inexpensive, consistent with animal welfare and have to improve also general productivity. Ughting programs, controlled lactation through...

  19. BIOSTIMULATIONS APPLIED TO RABBIT REPRODUCTION: THEORY AND PRACTICE.

    Theau- Clément, M.; Castellini, C.; Maertens, L.; Boiti, C.
    [EN] Rabbit artificial insemination is now commonly practised in European countrles. In arder to maintain a "natural image" of rabbit meat and to be consistent with animal welfare, authors discuss the interest of biostimulation methods defined in opposition with "gonadotrophin treatment" to improve sexual receptivity of does at the moment of insemination. They first comment how at a physiological level biostimulations can improve reproduction performance. In a second part, they draw up the balance-sheet of their use in zootechnical species and rabbits. They concluded that these methods have to be easy to apply, inexpensive, consistent with animal welfare and have to improve also general productivity. Ughting programs, controlled lactation through...

  20. BIOSTIMULATIONS APPLIED TO RABBIT REPRODUCTION: THEORY AND PRACTICE.

    Theau- Clément, M.; Castellini, C.; Maertens, L.; Boiti, C.
    [EN] Rabbit artificial insemination is now commonly practised in European countrles. In arder to maintain a "natural image" of rabbit meat and to be consistent with animal welfare, authors discuss the interest of biostimulation methods defined in opposition with "gonadotrophin treatment" to improve sexual receptivity of does at the moment of insemination. They first comment how at a physiological level biostimulations can improve reproduction performance. In a second part, they draw up the balance-sheet of their use in zootechnical species and rabbits. They concluded that these methods have to be easy to apply, inexpensive, consistent with animal welfare and have to improve also general productivity. Ughting programs, controlled lactation through...

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.