World Rabbit Science - Vol. 10 (1)-2002
URI permanente para esta colecciónhttps://riunet.upv.es/handle/10251/9963
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- EFFECT OF SYNTHETIC PROSTAGLANDIN F2ct ANALOGUE (CLOPROSTENOL) ON LITTER SIZE AND WEIGHT IN A RABBIT LINE SELECTED BY GROWTH RATE
- A FEEDING PROGRAMME FOR YOUNG RABBIT DOES BASED ON LUCERNE
- REVIEW: I -THE ORGANISATION AND FUNCTIONING OF THE IMMUNE SYSTEM: PARTICULAR FEATURES OF THE RABBIT""
- REVIEW: II - DIET AND IMMUNITY : CURRENT STATE OF KNOWLEDGE AND RESEARCH PROSPECTS FOR THE RABBIT
- Abstracts of the communications presented during the 13th Hungarian Conference on Rabbit Production.
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Publicación Abstracts of the communications presented during the 13th Hungarian Conference on Rabbit Production, Kaposvár (Hungary). May 23, 2001(World Rabbit Science. ICTA. UPV, 2002) World Rabbit SciencePublicación REVIEW: II - DIET AND IMMUNITY : CURRENT STATE OF KNOWLEDGE AND RESEARCH PROSPECTS FOR THE RABBIT(World Rabbit Science. ICTA. UPV, 2002) Fortun-Lamothe, L.; Drouet-Viard, F.[EN] Feeding plays an importan! role on the immune system of the animals. Nutriments contained in food can have a direct role on immunity while being used as substrates for the cellular proliferation and !he synthesis of the effector and informan! molecules. They can also have an indirect role: the nutritional status acts on immunity throughout !he neuroendocrine system and sorne nutrients (unsaturated fatty acids and vitamins A, D and E) have an immunomodulatory action. In addition to the nutriments that it contains, the food can affect the sensitivity of the animals to the infections by modifying the intestinal flora, the attachment capacity of the micro-organisms and the intestinal epithelium integrity. In addition, sorne molecules not having a major nutritional function, such as carotenoids, can modulate the immune answer. Lastly, !he food can be a vector for molecules or organisms that have a role on immune system (glucans, probiotics, mycotoxins). lf the feeding can affect the immune system, reciprocally, a stimulation immune system (in case of infectious disease for example) modifies the nutritional needs of the sick animal. The whole of the data concerning the interactions between feeding and immunity obtained in other species make it possible to propose interesting perspectives of research in rabbit. lndeed, the control of digestive pathologies is one of the major difficulties of the rabbit breeding and appropriate feeding could contribute to improve immune capacity of the animals.Publicación REVIEW: I -THE ORGANISATION AND FUNCTIONING OF THE IMMUNE SYSTEM: PARTICULAR FEATURES OF THE RABBIT""(World Rabbit Science. ICTA. UPV, 2002) Drouet-Viard, F.; Fortun-Lamothe, L.[EN] This article summarises the general organisation of the immune system, and the origins of its cells and their roles. The various aspects of the immune response, innate, specific, humoral el cell mediated, are briefly described. The immune response of the intestinal mucosa is presentad with the inductiva and effector sites. The regulatory pathways of the immune response and the techniques that can be used to evaluate the immune status of an animal are also presentad.Publicación A FEEDING PROGRAMME FOR YOUNG RABBIT DOES BASED ON LUCERNE(World Rabbit Science. ICTA. UPV, 2002) Pascual Amorós, Juan José; Cervera, C.; Fernández-Carmona, J.; Departamento de Ciencia Animal; Instituto Universitario de Ciencia y Tecnología Animal; Escuela Técnica Superior de Ingeniería Agronómica y del Medio Natural; Ministerio de Educación y Cultura[EN] A feeding programme for young rabbit does based on a high fibrous diet was evaluated in the present work, using 46 crossbred does of 70 days of age. Two diets, control (C) and a high fibre diet (F) formulated almost exclusively with luceme (96%), were compared. Young does in F group received F diet ad libitum until first parturition, while does in e group received e diet ad libitum until 3 kg live weight and then were restricted to 150 g per day. As of parturition, C diet was offered ad libitum to both groups until the end of the experiment. Up to 3 kg live weight, does given C diet had higher DE (P<0.001) intake and greater daily weight gain (P<0.001) than those fed F diet. C does weighed 3 kg and had the first parturition earlier than F does (18 and 7.6 days, respectively). F does ingested more food (P<0.001) during lactation, produced more milk (P<0.01) and weaned heavier litters (P<0.01) than C does, but litter size at birth and the number of pups replaced during lactation was not affected by diet. Maintaining these two groups for two years with the same reproduction schedule, no significant differences were detected in parturition interval, litter size at birth and litter size and weaning between them, although the figures related to F group were in general slightly better.Publicación EFFECT OF SYNTHETIC PROSTAGLANDIN F2ct ANALOGUE (CLOPROSTENOL) ON LITTER SIZE AND WEIGHT IN A RABBIT LINE SELECTED BY GROWTH RATE(World Rabbit Science. ICTA. UPV, 2002) Lavara, R.; Viudes-de-Castro, M.P.; Vicente, J.S.; Mocé, E.; Ministerio de Ciencia y Tecnología[EN] The effect of a treatment with a synthetic analogue of prostaglandin F2a (cloprostenol) administrated intramuscularly on day 28 of pregnancy in does belonging to a synthetic rabbit line selected by growth rate (line R) was studied. A reduction in gestation length was observed after treatrnent with prostaglandins (31.3±0.1 vs 32.4±0.1 days, for treated and control groups, respectively, P<0.05). Litter size at birth, and live-born pups were not affected by the treatment. Individual weight of young rabbits at birth was significantly different between treatrnent groups (52±1 vs 58±1 g, in treatment and control group respectively, P<0.05). In the control group, young rabbits born from multiparous does were heavier than those from pnm1parous (53±2 vs 63±1 g, in primiparous and multiparous does respectively, P<0.05). There were not differences in birth weight of kits from treated multiparous and primiparous does. At weaning, individual weight was not affected by treatrnent (578±12 and 561±10 g, in control and treatment group respectively), and differences were observed in reproductive status (513±12 vs 626±9 g, in primiparous and multiparous does respectively, P<0.05). An increase in mortality was observed during lactation period after treatrnent with PGF2a (48% vs 26%, in cloprostenol and control group respectively, P<0.01).