World Rabbit Science - Vol. 11 (4)-2003
https://riunet.upv.es:443/handle/10251/9684
2024-03-29T09:08:25ZAbstracts of the communications presented during the Segundo Congreso de Cunicultura de las Américas, La Habana. Cuba. July 2002
https://riunet.upv.es:443/handle/10251/9938
Abstracts of the communications presented during the Segundo Congreso de Cunicultura de las Américas, La Habana. Cuba. July 2002
2011-02-23T09:37:51ZTechnical Note: Autovaccines against mycoplasmas in farm rabbits
https://riunet.upv.es:443/handle/10251/9937
Technical Note: Autovaccines against mycoplasmas in farm rabbits
Boucher, S.; Nouaille, L.; Albizu, I.; Baselga, R.
[EN] Farm rabbits are affected by respiratory and reproductive disorders that compromise their health and the productivity of the farm. In two earlier papers we highlighted the role of mycoplasmas in these processes and the present article evaluates the usefulness of autovaccines to control mycoplasmosis. On a commercial rabbitry with 800 females, 428 kits were vaccinated, leaving 3,622 as controls. A lower mortality was observed among the vaccinated kits, with a significant (P<0.01) decrease in the presence of lung lesions.
2011-02-23T09:33:43ZEFFECT OF GRADED LEVELS OF HIGH GLUCOSINOLATE MUSTARD (BRASSICA JÚNCEA) MEAL INCLUSION ON NUTRIENT UTILIZATION, GROWTH PERFORMANCE,ORGAN WEIGHT, AND CARCASS COMPOSITION OF GROWING RABBITS
https://riunet.upv.es:443/handle/10251/9936
EFFECT OF GRADED LEVELS OF HIGH GLUCOSINOLATE MUSTARD (BRASSICA JÚNCEA) MEAL INCLUSION ON NUTRIENT UTILIZATION, GROWTH PERFORMANCE,ORGAN WEIGHT, AND CARCASS COMPOSITION OF GROWING RABBITS
Tripathi, M.K.; Mishra, A.S.; Misra, A.K.; Prasad, R.
[EN] Mustard (Brassica juncea) meal (MM) was incorporated at the levels of 80, 160 and 245 g/kg of rabbit diets in replacement of soybean meal (SBM) and compared with a SBM based diet. The three levels of incorporated MM contributed total glucosinolate (TGLS) 3.6, 8.0 and 11.5 g/kg DM respectively. Forty-four weaning rabbits (4 weeks old, 314 + 24 g live weight) of Soviet Chinchilla and White Giant breed comprising 24 males and 16 females were balanced for weight and sex, and randomly allocated to the four experimental diets. The feed intake and growth of the rabbits were monitored in an 8-week long growth study. The nutrient utilization was determined at the middle of the study. The MM used in the experimental diets contained 58 g TGLS/kg. MM incorporated diets had higher ME content ranging from 11.05 to 11.48 MJ/kg DM. The replacement of SBM protein at 33% amounting to incorporation of 8% MM in diet increased (P<0.05) the apparent digestibility of DM, OM, CP, ADF and GE. Quadratic increase was observed for nutrient digestibility except for GE, which showed both linear and quadratic increase. The MM incorporation in growing rabbit diets linearly reduced protein and increased fat content in muscle. The liver weight increased due to MM incorporation. Rabbits fed MM diets reduced feed intake whereas feed conversion efficiency was improved, which showed linear and quadratic effects. Average daily gain of rabbits reduced linearly (P<0.05) on MM diets. Further, rabbits in the present experiment tolerated up to 3.6 g TGLS/kg diet DM during active growth phase without any apparent effect on health and growth performance. It is concluded that MM cannot replace SBM in growing rabbit feeding due to growth and feed intake depression which could be attributed to the TGLS presence, depressing the liver function and affecting the muscle nutrient accretion pattern. However, partial replacement of SBM amounting to 80 g MM/kg diet could not have apparent adverse effects on growth and health of growing rabbits.
2011-02-23T08:27:51ZPREDICTION OF NUTRITIVE VALUE OF DIETS FOR RABBITS USING AN IN VITRO GAS PRODUCTION TECHNIQUE
https://riunet.upv.es:443/handle/10251/9935
PREDICTION OF NUTRITIVE VALUE OF DIETS FOR RABBITS USING AN IN VITRO GAS PRODUCTION TECHNIQUE
Stanco, G.; Di Meo, C.; Calabrò, C.; Nizza, A.
[EN] Thirty-one mixed diets for rabbits (DE concentration from 8.44 to 12.29 MJ/kg) were used to predict the digestibility of dry matter (dDM), organic matter (dOM), gross energy (dGE) and digestible energy concentration (DE) from some in vitro gas production parameters, using frozen caecal content from rabbits. Step-wise multiple regression analysis showed that the most significant contribution to the variation expressed by dDM, dOM, dGE and DE arises from crude fibre content (CF). Multiple regression analysis considered more than one independent variable, but it gave only marginally improvements in terms of the accuracy of digestibility prediction. The best equations in terms of R2 and residual standard deviation (RSD) values were: DE (MJ/kg DM) = 0.75 - 0.291 CF - 0.208 ADL + 0.856 GE (R2 = 0.895, RSD 0.279) and dOM (%) = 91.8 - 1.756 CF - 1.283 ADL (R2 = 0.849, RSD 1.655) where CF = crude fibre (%DM), ADL = acid detergent lignin (%DM), GE = gross energy (MJ/kg DM). Dry matter loss (DMl, %) was the in vitro gas production parameter which correlated most closely with dDM, dOM, dGE and DE. The best prediction equations were: DE (MJ/kg DM) = -3.14 + 0.217 DMl + 0.114 B (R2 = 0.734, RSD 0.437) and dOM (%) = - 6.80 + 1.078 DMl + 0.456 B (R2 = 0.691, RSD 2.368), where B is the incubation time (h) at half potential gas. When data of the chemical composition and from fermentation parameters were included concurrently in the model, the most significant contribution to the variation explained of dDM, dOM, dGE and DE still arose from CF. These results suggest that in vitro gas production could be an interesting method of predicting the nutritive value of rabbit diets, but further investigations are required to increase caecal inoculum standardisation and its prediction ability.
2011-02-23T08:24:38ZGROWTH OF FRYERS REARED AND(OR) FINISHED USING CONTROLLED GRAZING IN MOVABLE PENS
https://riunet.upv.es:443/handle/10251/9934
GROWTH OF FRYERS REARED AND(OR) FINISHED USING CONTROLLED GRAZING IN MOVABLE PENS
McNitt, J.; Way, R.; Way, M.; Forrester-Anderson, I.
[EN] The productivity of fryer rabbits kindled in conventional hanging wire cages in a building and finished in a pasture pen (InOut), kindled and reared in a pasture pen (OutOut) or kindled and reared in the cages (OutOut) was compared to determine the feasibility of pasturing as a means of production. The pens were divided into four 120 x 120 cm compartments and placed on an established 80% orchard grass: 20% alfalfa-clover sward overlaid with chicken wire. The pens were moved to a new location each day for fresh grazing. Litters from eight does that kindled in cages and four that kindled in outdoor pens were used. At 42 days the fryers were weaned and 24 fryers born in the indoor cages were randomly assigned to cages within the barn (InIn) and 24 to outside pens (InOut). Thirty two of the fryers born in outdoor pens were randomly assigned to one of four outdoor pens (OutOut). The kits were weighed on days 42 (weaning), 55, 82 and 104. At day 104, the rabbits were processed and carcass and kidney fat weights recorded. Because of mortality, there were 23 InIn carcasses, 21 InOut carcasses and 30 OutOut carcasses. Data were analyzed using the General Linear Models Procedure of SAS. InIn fryers had higher (P<0.01) growth rates, final weights, carcass weights and kidney fat weights than the InOut or OutOut fryers (28.0±0.6 g/d, 2640±47 g, 1385±29 g and 15.4±1.0 g for InIn vs. 23.4±0.6 g/d, 2307±49 g, 1187±30 g and 5.4±1.0 g for InOut and 22.7±0.5 g/d, 2156±41 g, 1096±25 g and 0.9±0.9 g for OutOut, respectively). The InOut rabbits were numerically intermediate between the InIn and OutOut groups for all traits. Rearing and finishing rabbits in movable pens on pasture can result in reasonable rates of production which might be helpful in satisfying the demands of consumers who are willing to pay extra for the more naturally produced, grass-finished product.
2011-02-23T08:22:05Z