Journal Article•
Comprising study of produ Ctive C hara Cteristi Cs of lo Cal rabbit breed and f 1 crossbreds ( c alifornian l ine (♂) x albanian local rabbit breed (♀)) rearing in traditional and improved system
01 Jan 2013-Bulgarian Journal of Agricultural Science (Agricultural Academy - Bulgaria)-Vol. 19, Iss: 4, pp 806-809
TL;DR: Statistical and multivariate analyses used to evaluate and compare the productive characteristics of local rabbit breed and F 1 crossbreds showed that the differences between two genotypes are significant only in improved rearing system.
Abstract: PaPa, L., K. Kume and a. LLambiri, 2013. Comprising study of productive characteristics of local rabbit breed and F 1 crossbreds (Californian Line (♂) x Albanian local rabbit breed (♀)) rearing in traditional and improved system. Bulg. J. Agric. Sci., 19: 806-809 a total of 267 male and female rabbits coming from local rabbit breed and F 1 crossbreds (Californian Line crosses (♂) x Albanian local rabbit breed(♀)) rearing in traditional and improved system were used for this study. The evaluation and comparison of productive performances live weight at weaning (WLW), live weight at slaughter age (SLW), and average of weight gain (AWG) of these two genotypes reared in two different systems was the aim of this study. Statistical and multivariate analyses used to evaluate and compare the productive characteristics of local rabbit breed and F 1 crossbreds showed that the differences between two genotypes are significant only in improved rearing system(SLW 2822.1 g vc 2338.5 g, P<0.01), AWG 26.24 g vc 35.51 g, P<0.05. The differences between sexes and the effect of rearing season are statistically significant in both rearing systems, (P<0.05). The Gompertz curves have significant differences affected by the genotype (P<0.01) only in rabbits reared in improved system. The rabbits of local breed reared in improved system produce more meat than in traditional system. (SLW 2338 g vc, 2042.4 g P<0.05 AWG 35.51 g, vc 26.24 g P<0.05). The (F 1 ) crosses could improve meat production from rabbits only if they are kept in improved system.
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01 Jan 2008
TL;DR: Overall, for growth performances (ADG and live weight at 63 d) and hind part yield, breed types from NZ dams had better performances that those from CA dams, and a different classification was observed, with better performances of CA sired breed types.
Abstract: A total of 142 male and female rabbits of two breeds, Californian (CA) and New-Zealand White (NZ), and their reciprocal crosses were used. This study aimed to estimate heterosis, direct and maternal additive effects as well as some non genetic effects on rabbit growth and carcass characteristics in order to identify the best crossbreeding plan to use for rabbit meat production under Quebec conditions. Kits used for this experiment were weaned at 5 weeks of age. Each rabbit was identified and weighed individually at weaning and at 63 days of age. During the fattening period, rabbits were placed in individual cages. Rabbits were slaughtered after 18 h fasting from feeds only. The commercial carcass including liver, kidneys and perirenal fat was weighed after 2 hours chilling at 4°C. After dissection, fore part, intermediate part and hind part of carcass were measured. Dressing out percentage was calculated as chilled carcass weight x 100/live weight. One of the hind legs was used to evaluate meat/bone ratio. Statistical analyses were performed using the procedure GLM of SAS. Results showed significant differences between breed types for individual live weight at 35 d, average daily gain, live weight at 63 d, fore part, intermediate part and hind part yields. Overall, for growth performances (ADG and live weight at 63 d) and hind part yield, breed types from NZ dams had better performances that those from CA dams. Concerning the intermediate part yield (and carcass yield, but non significantly) a different classification was observed, with better performances of CA sired breed types. There were no significant effects of breed type on commercial carcass weight, commercial carcass yield and meat/bone ratio. The lower the litter size at birth, the heavier the individual weight at weaning, at 63 d and the commercial carcass weight were. Rabbits coming from the 2 parity litters were significantly heavier at weaning and had the highest commercial carcass weight. Crossbreeding parameters were calculated from linear contrasts between breed types means. Breed NZ had positive direct effects on growth rate and 63-d body weight but negative ones on carcass yield and the proportion of intermediate part of the carcass. Maternal and heterosis effects were generally non significant.
27 citations
"Comprising study of produ Ctive C h..." refers result in this paper
...Cunicole, INRA-ITAVI, 2007 November, Le mans, France, pp. 149-152. ouyed, a. and J. m. brun, 2008....
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...These results are in agreement with those reported by Prayaga and Eady (2003); Ouyed et al. (2007); Pinheiro et al. (2008); Ouyed and Brun (2008); Daija et al. (2009)....
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...2003; Ouyed et al., 2007; Pinheiro et al., 2008; Ouyed and Brun, 2008; Daija et al., 2009)....
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TL;DR: Individual body weights at 5-10 weeks of age were significantly lower in the 1st parity born rabbit than in other higher parity born rabbits, and common litter variance explained a significantly large proportion of total phenotypic variance.
Abstract: Data from 3 rabbit breeds, namely New Zealand White (N), Californian (C), and Flemish Giant (F), and their crosses, i.e. CN, FN, F(CN), and C(FN), were analysed for individual growth traits such as body weights at 5 (5WT), 6 (6WT), 7 (7WT), 8 (8WT), 9 (9WT), and 10 (10WT) weeks of age, and post-weaning average daily gain between 5 and 10 weeks of age (ADG), and individual slaughter traits such as liveweight at slaughter (SW), carcass weight (CW), and dressing percentage (DP). Data included records for individual body weights from 1345 to 1524 rabbits from 279 litters and records for slaughter traits from 919 rabbits from 245 litters. Significant sources of variation for individual growth and slaughter traits were breed, parity, month-year of birth, sex, and number weaned per litter (NW). However, parity and NW did not significantly affect ADG and DP. Slaughter traits were not significantly affected by sex. The overall least squares means for 5WT, 6WT, 7WT, 8WT, 9WT, 10WT, ADG, SW, CW, and DP were 836 g, 1021 g, 1215 g, 1390 g, 1577 g, 1791 g, 27.2 g/day, 2.28 kg, 1.23 kg, and 53%, respectively. N and F purebred, and FN crossbred rabbits performed significantly (P < 0.05) better than C purebred and crossbreds (CN and C(FN)) in all the individual growth and slaughter traits except for DP. CN performed better (P < 0.05) in DP than all other crosses. ADG of C rabbits was significantly (P < 0.05) lower than of all other crosses under study, with F(CN), C(FN), and CN crosses showing intermediate growth rates. Significantly (P < 0.05) higher growth rates were observed in N, F, and FN breeds. There was no significant heterosis observed in the breed crosses for any traits under study. Individual body weights at 5-10 weeks of age were significantly lower in the 1st parity born rabbits than in other higher parity born rabbits. SW and CW were significantly higher in 2nd and 3rd parity rabbits than in 1st and 4th and later parity born rabbits. Female rabbits achieved heavier weights at 5, 6, and 7 weeks of age than males and males weighed more than females after 7 weeks of age. ADG of males was significantly (P < 0.05) higher than of females. Significant negative regression coefficients of NW on all individual body weights until slaughter age showed that larger litters had lighter rabbits. Coefficient of variation for individual growth and slaughter traits ranged between 11.1 and 20.7%. Common litter variance explained a significantly large proportion of total phenotypic variance, with the proportions ranging between 0.36 and 0.55 for individual growth traits, 0.46 for SW, and 0.35 for CW. A l s i K. C. S.d
19 citations
01 Jan 2008
TL;DR: The housing system had no effect on dressing out percentage, viscera proporti on and meat pHu, and the open-air rabbits had lower percentage of dissectible fat in reference carcass and their fem ur had higher diameter.
Abstract: A study was carried out to investigate the effects of two housing systems on the performance, carcass traits and meat quality of growing rabbits. Ninetysix rabbits were used from 59 to 87 days of age. Forty eight rabbits were housed in 12 wired cages ( 0.5×0.6 m; 4 rabbits/cage) and 48 rabbits were housed in one open-air pasture pen (20×9 m). The gr owth performances were measured during the growing period. At 87 d, 12 rabbits per treatment w ere slaughtered and carcass characteristics determined according to the WRSA norms. Rabbits rea red in cages showed higher (P<0.05) weight gain (45.9 vs. 34.2 g/d), pellet intake (163.4 vs. 110.2 g/d) and live weight (3062 vs. 2705 g) than those reared in open-air pens. At slaughter the ope n-air rabbits had higher (P<0.05) proportion of hin d part (34.9 vs. 33.1%) but the dressing out percenta g was similar (about 60%). The open-air rabbits had lower (P<0.05) percentage of dissectible fat in reference carcass (1.66 vs. 5.29%) and proportion of muscle in hind leg (79.3 vs 81.9%) and their fem ur had higher diameter. The housing system had no effect on dressing out percentage, viscera proporti on and meat pHu.
9 citations
"Comprising study of produ Ctive C h..." refers methods in this paper
...(2007); Pinheiro et al. (2008); Ouyed and Brun (2008); Daija et al....
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...(2007); Pinheiro et al. (2008); Ouyed and Brun (2008); Daija et al. (2009). The data of Table 3 are used to judge about the way of reaction of local breed rabbits and F1 crosses to rearing system, traditional or improved ones....
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TL;DR: To change the rabbit production in Bulgaria as intensive or semi intensive it need to improve selection and feeding systems, to concentrate the farm, and to build new more modern farms with control systems of microclimatic parameters and which covered veterinarian requirements.
Abstract: The aim of the study was to present the situation of rabbit production in Bulgaria. As a whole the rabbit production in Bulgaria is in extensive stage. To change it as intensive or semi intensive it need to improve selection and feeding systems, to concentrate the farm, and to build new more modern farms with control systems of microclimatic parameters and which covered veterinarian requirements.
8 citations
TL;DR: Rabbit farming is a useful production activity on small scale family farms and breeding 2-3 couples of reproducing rabbits could increase the gross annually income of family farm up to 22-28 percent.
Abstract: Rabbit breeding on small scale family farms is carried on as an alternative production activity, in Albania. Extensive production system and breeding of local rabbit breed are most frequent. Albanian local rabbit can be classified in middle size breed group. It is a population with high morphological and biological variability, with variation in coat colour. Rabbit farming is a useful production activity on small scale family farms. Breeding 2-3 couples of reproducing rabbits could increase the gross annually income of family farm up to 22-28 percent.
2 citations
"Comprising study of produ Ctive C h..." refers background in this paper
...12±2.4b 21.35±1.7a 33.2±3.1c Mains with different letters on the same row differ significantly Llambiri et al (2010); Llambiri et al. (2009); Dimitrova et al. (2008); Raddy et al. (2002)....
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...…as a result of the spontaneous process of the domestication of the wild rabbit that lives in the different regions of Albania and (iii) actual population originates from a casual mixture of the animals domesticated in albania and those brought from other regions of Europe (Llambiri et al., 2010)....
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...Three different hypothesis are discussed: (i) Actual population originates from domestic animals, during the last period of Medievalism, in the region of South-eastern Europe, France, Italy, Spain etc. which have been brought, during XIX century and later in Albania by travellers who have visited these part of Europe, (ii) common rabbit is a population created as a result of the spontaneous process of the domestication of the wild rabbit that lives in the different regions of Albania and (iii) actual population originates from a casual mixture of the animals domesticated in albania and those brought from other regions of Europe (Llambiri et al., 2010)....
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