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. VACCINATON TRIAL AGAINST EIMERIA MAGNA COCCIDIOSIS USING A PRECOCIOUS LINE.

    DROUET-VlARD, F.; COUDERT, P.; LICOIS, D.; BOIVIN, M.
    [EN] Thirty six 25-day-old suckling rabbits and thirty six 29-day-old rabbits weaned sin59 one day ytere orally vaccinated with one of the two doses (3.5 x 10 or 3.5 x 10 oocysts) of a precocious line of Eimeria magna. Only the groups vaccinated with the hi11hest dose displayed a vaccine reaction, but without diarrhea or mortality. A vaccination totaly or incompletely protected against disease, assessed by daily growyh rate patterns, according to the dose given a~d reduced w,ocyst output 1 O to 1000 times, measured between the 4 and the 10 day following the challenge inoculation.

  2. VACCINATON TRIAL AGAINST EIMERIA MAGNA COCCIDIOSIS USING A PRECOCIOUS LINE.

    DROUET-VlARD, F.; COUDERT, P.; LICOIS, D.; BOIVIN, M.
    [EN] Thirty six 25-day-old suckling rabbits and thirty six 29-day-old rabbits weaned sin59 one day ytere orally vaccinated with one of the two doses (3.5 x 10 or 3.5 x 10 oocysts) of a precocious line of Eimeria magna. Only the groups vaccinated with the hi11hest dose displayed a vaccine reaction, but without diarrhea or mortality. A vaccination totaly or incompletely protected against disease, assessed by daily growyh rate patterns, according to the dose given a~d reduced w,ocyst output 1 O to 1000 times, measured between the 4 and the 10 day following the challenge inoculation.

  3. SOME OBSERVATIONS ON REPRODUCTIVE PERFORMANCE OF RABBITS OBTAINED IN SEMI-HUMID TROPICAL CONDITIONS IN NIGERIA

    EHIOBU, N.G.; UTIM, A.; GWAZA, S.D.
    [EN] Successful matings (139) of 7 bucks and 51 does were used to study the reproductive performance, during a four-years period, of rabbits crossbred comprising New Zealand White, Chinchilla, Dutch Black and Califomian but whose exact genetic mate-up is unknown. Mean litter size at birth and at weaning were 4.49 ± 0.15 and 3.18 ± 0.18 respectively. Gestation length ranged from 28 to 36 days with a mean of 31.80 ± 0.11 days. Mean preweaning litter mortality was 27.9 ± 3.1 %. There was no significant effect of buck on all traits studied. However, litter size at birth and gestation length were significantly (P<0.05) affected by year of kindling.

  4. SOME OBSERVATIONS ON REPRODUCTIVE PERFORMANCE OF RABBITS OBTAINED IN SEMI-HUMID TROPICAL CONDITIONS IN NIGERIA

    EHIOBU, N.G.; UTIM, A.; GWAZA, S.D.
    [EN] Successful matings (139) of 7 bucks and 51 does were used to study the reproductive performance, during a four-years period, of rabbits crossbred comprising New Zealand White, Chinchilla, Dutch Black and Califomian but whose exact genetic mate-up is unknown. Mean litter size at birth and at weaning were 4.49 ± 0.15 and 3.18 ± 0.18 respectively. Gestation length ranged from 28 to 36 days with a mean of 31.80 ± 0.11 days. Mean preweaning litter mortality was 27.9 ± 3.1 %. There was no significant effect of buck on all traits studied. However, litter size at birth and gestation length were significantly (P<0.05) affected by year of kindling.

  5. PERFORMANCE OF 3 RABBITS STRAINS AND THEIR RECIPROCAL CROSSES IN EGYPT DURING SUMMER.

    RASHWAN, A.A.; YAMANI, K.A.; ABD EL-GHANI, A.I.
    [EN] The present work was conducted to study the performance of 3 rabbits strains: New Zealand White (NZW), Baladi Black (BB) and Baladi Red (BR) and 4 of the reciproca! crosses between NZW and Baladi rabbits, during hot summer of Egypt. Values of litter size at birth, weaning (28 days) and marketing ages (84 days) did not differ significantly as affected by genotype, sex or the interaction between them. Mortality values of offspring from birth to weaning age differed significantly (P<0.01) among the 7 genetic types and NZWxNZW showed the rower value (5.4%), while BRxBR showed the highest value (41.1 %). They were no significant differences for mortality from weaning...

  6. PERFORMANCE OF 3 RABBITS STRAINS AND THEIR RECIPROCAL CROSSES IN EGYPT DURING SUMMER.

    RASHWAN, A.A.; YAMANI, K.A.; ABD EL-GHANI, A.I.
    [EN] The present work was conducted to study the performance of 3 rabbits strains: New Zealand White (NZW), Baladi Black (BB) and Baladi Red (BR) and 4 of the reciproca! crosses between NZW and Baladi rabbits, during hot summer of Egypt. Values of litter size at birth, weaning (28 days) and marketing ages (84 days) did not differ significantly as affected by genotype, sex or the interaction between them. Mortality values of offspring from birth to weaning age differed significantly (P<0.01) among the 7 genetic types and NZWxNZW showed the rower value (5.4%), while BRxBR showed the highest value (41.1 %). They were no significant differences for mortality from weaning...

  7. GROWTH OF RABBITS UNDER DIFFERENT ENVIRONMENTAL TEMPERATURES USING HIGH FAT DIETS.

    Cervera Fras, Mª Concepción; Blas Ferrer, Enrique; Fernández-Carmona, J.
    [EN] 686 rabblts, weaned at 35 days of age, were fed ad libitum up to 84 days of age on three diets (composition per kg dry matter: 11.0 MJ DE - 26 g EE; 12.2 MJ DE - 117 g EE mainly from commercial tallow; 12.4 MJ DE, 99 g EE from vegetable origin) and five environments defined by the mean mínimum temperatures during fattening of 10-14°C, 14-22°C, 22-26°C, 30°C constant and 33°C constant Dally gains recorded for those temperatures were 38, 38, 33, 28, 23 g (P<0.001) and feed intake 83, 77, 70, 62, 53 g DM/kgº·75 (P<0.001). Daily gain recordad for the three 9~ was...

  8. GENETICS OF THE RABBIT FOR MEAT PRODUCTION : WHAT'S NEW SINCE THE WORLD RABBIT CONGRESS HELD IN BUDAPEST IN 1988? l A REVIEW.

    ROCHAMBEAU, H. de
    [EN] The purpose of this paper is to review sorne new results about genetics of the rabbit for meat production. We examine 4 key issues : (i) domestication of the rabbit took place few hundred years ago; European Community has just approved a program of characterisation and evaluation of genetic resources. (ii) Selection for litter size is effective, as selection for post weaning growth; genetic progress are around 0.05-0.1 O rabbit per litter and per generation, and 25-40 g. of slaughter weight per generation. (iii) Selection of strains and crossbreeding between these strains could increase the litter weight at slaughter age of more than 40% in relation to...

  9. GENETICS OF THE RABBIT FOR MEAT PRODUCTION : WHAT'S NEW SINCE THE WORLD RABBIT CONGRESS HELD IN BUDAPEST IN 1988? l A REVIEW.

    ROCHAMBEAU, H. de
    [EN] The purpose of this paper is to review sorne new results about genetics of the rabbit for meat production. We examine 4 key issues : (i) domestication of the rabbit took place few hundred years ago; European Community has just approved a program of characterisation and evaluation of genetic resources. (ii) Selection for litter size is effective, as selection for post weaning growth; genetic progress are around 0.05-0.1 O rabbit per litter and per generation, and 25-40 g. of slaughter weight per generation. (iii) Selection of strains and crossbreeding between these strains could increase the litter weight at slaughter age of more than 40% in relation to...

  10. EFFECTS OF HCG INJECTION AND BREED ON REPRODUCTIVE PERFORMANCE OF RABBITS, UNDER EGYPTIAN CONDITIONS

    El-Kelawy, H.M.
    [EN] Forty five primiparous New Zealand White (NZW) and 30 primiparous Califomian (CAL) doe rabbits were used to study the effect of injection of 50 IU. human chorionic gonadotrophin (HCG; Corulon) on reproductive and productive performance of NZW and CAL does and their offspring from parturition and to weaning. The effects of breed and parity were studied. Doe traits (conception rate, number of services per conception, gestationJen~~h, litter~ize, litter weight, litter weight gain and milk yield at 1 , 2 and 4 week of lactation) and offspring traits (mean rabbit weight, daily weight gain and pre-weaning mortality percentage) were not significantly affecte~ by breed and parity. However, the milk production...

  11. EFFECTS OF HCG INJECTION AND BREED ON REPRODUCTIVE PERFORMANCE OF RABBITS, UNDER EGYPTIAN CONDITIONS

    El-Kelawy, H.M.
    [EN] Forty five primiparous New Zealand White (NZW) and 30 primiparous Califomian (CAL) doe rabbits were used to study the effect of injection of 50 IU. human chorionic gonadotrophin (HCG; Corulon) on reproductive and productive performance of NZW and CAL does and their offspring from parturition and to weaning. The effects of breed and parity were studied. Doe traits (conception rate, number of services per conception, gestationJen~~h, litter~ize, litter weight, litter weight gain and milk yield at 1 , 2 and 4 week of lactation) and offspring traits (mean rabbit weight, daily weight gain and pre-weaning mortality percentage) were not significantly affecte~ by breed and parity. However, the milk production...

  12. A TECHNICAL NOTE ON ARTIFICIAL MILK FEEDING OF RABBIT KITS WEANED AT 14 DAYS

    Ferguson, F.A.; Lukefahr, S.D.; McNitt, J.I.
    [EN] The effect of ear1y weaning on kit growth and survival performance using an artificial milk feeding regimen was investigated. New Zealand Whlte kits (n = 191) from 23 litters were either naturally or artificially fed a mili< diet. The artificial milk diet (A) consisted of a commercial milk replacer which was fed from days 15 to 21, following weaning at 14 d postpartum. Control litters (C) nursed their dams until d 28 when they were weaned. From 15 to 21 d, half of the amount of milk consumed by e kits at the same age was fed to A kits via a stomach tube. Both e and...

  13. A TECHNICAL NOTE ON ARTIFICIAL MILK FEEDING OF RABBIT KITS WEANED AT 14 DAYS

    Ferguson, F.A.; Lukefahr, S.D.; McNitt, J.I.
    [EN] The effect of ear1y weaning on kit growth and survival performance using an artificial milk feeding regimen was investigated. New Zealand Whlte kits (n = 191) from 23 litters were either naturally or artificially fed a mili< diet. The artificial milk diet (A) consisted of a commercial milk replacer which was fed from days 15 to 21, following weaning at 14 d postpartum. Control litters (C) nursed their dams until d 28 when they were weaned. From 15 to 21 d, half of the amount of milk consumed by e kits at the same age was fed to A kits via a stomach tube. Both e and...

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