Growth performances and carcass traits in three strains of rabbits and their two-way crosses

Brun, Jean- Michel J.- . M.; Ouhayoun, J.

doi:10.1051/animres:19890211

Cited by 17 publications

(14 citation statements)

References 6 publications

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“…This opposition between direct and maternal effects on growth is in accordance with other results from crossbreeding experiments (Brun and Ouhayoun, 1994) even if it cannot be stated as a general rule. The negative maternal effects of CA breed on weight traits from weaning to slaughter are in agreement with results from Brun and Ouhayoun (1989) and are likely linked to the higher ovulation rate and litter size of this breed. Interestingly, FCR is dependant on both direct and maternal gene effects, with a balance between opposing unfavourable direct effects and favourable maternal effects of the CH breed.…”

Section: Genetic Types and Dickerson's Parameter Estimatessupporting

confidence: 81%

“…As an example, in a crossbreeding experiment involving two INRA strains based on the NZ breed (one selected for litter size and its unselected control) and one strain from the CA breed selected for litter size, additive direct and maternal effects for ADG, carcass yield or edible part of the hind leg are more similar between strains submitted to the same selection criterion than between strains coming from the same breed (Brun and Ouhayoun, 1989). Moreover, genotype by environment interactions can alter the effect of any strain according to the type of environment.…”

Section: Genetic Types and Dickerson's Parameter Estimatesmentioning

confidence: 99%

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Heterosis, direct and maternal additive effects on rabbit growth and carcass traits from a Canadian experiment

2011

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Section: Genetic Types and Dickerson's Parameter Estimatessupporting

confidence: 81%

Section: Genetic Types and Dickerson's Parameter Estimatesmentioning

confidence: 99%

Heterosis, direct and maternal additive effects on rabbit growth and carcass traits from a Canadian experiment

2011

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“…On the other hand, Baladi x Californian crossbred rabbits had the highest dressing percentage of all crossbred rabbits. Similar findings were reported by Brun and Ouhayoun (1989) and Roman et al (1989). However, results of the mating system showed that reciprocal crosses between any two of these three strains of rabbits do not differ significantly for these traits except BC and CB crosses differing for middle part weight.…”

Section: Factors Affecting Slaughter Weight and Carcass Traitssupporting

confidence: 92%

Effect of Crossbreeding and Mating System on Slaughter Performance and Meat Quality in Three Breed Diallel Crosses of Rabbits

El-Bayomi

El-Sheikh

1992

Journal of Applied Animal Research

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Sixty five rabbits, representing three breeds (New Zealand White, Californian and Baladi) and their crosses, were used to determine the influence of purebred us. crossbred as well as mating system on slaughter performance, carcass traits and meat quality. The New Zealand White male and fernale lines were the heaviest in slaughter weight and carcass traits. The crossbred rabbits had heavier slaughter weight (1.99 kg), middle part weight (244.54 & and head weight (108.87g) as compared to purebred rabbits (1.91 kg, 221.50g iOO.63 g respectively) and the differences were highly significant. Crude protein and ether extract were of the same order in all classes. Moisture and ash were significantly affected by male rabbit line, while female line had only a significant effect on ash percentage. The purebred us. crossbred rabbits had only significant effect on ash percentage. Highly significant phenotypic correlations were found between different carcass traits. There were no phenotypic correlations between chemical composition of meat and their c a m s components and even among different chemical components of meat except a negative and highly significant phenotypic correlation between moisture and ash percentage (-0.454).

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“…Direct heterosis on the female body weight (5.6%) is in agreement with the moderate values observed by BRUN and OUHAYOUN (1989), which were between 1.6% and 6.3% on 79 d-body weight, and AFIFI et al (1994), who reported heterosis ranging between 2.7 to 9.5% for post-weaning body weights and gains, but higher than the ones obtained by KHALIL et al (2005b) (BRUN, 1993, BRUN andSALEIL, 1994), between 5.5% and 12.5% in the cross between New Zealand White and Californian breeds (NOFAL et al, 1996), between 4 and 10% in the cross of line A with lines V and H (BASELGA et al, 2003) and between 2.0 and 8.5% in the cross between V line and Saudi Gabali (KHALIL et al, 2005a).…”

Section: Estimates Of Dickerson's Parameterssupporting

confidence: 89%

Analysis of reproductive performances during the formation of a synthetic rabbit strain

Brun¹,

Baselga²

2010

World rabbit sci.

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ABSTRACT:In 1995, a synthetic rabbit strain ('2666') was formed at INRA for commercial meat purposes by crossing the INRA '2066' strain and the 'V' strain from the Polytechnical University of Valencia (Spain). The development of some reproductive traits and body weight at palpation of the '2666' does was studied from the F1 (first generation cross) to the F4 generation in comparison with the 'V' does. This development was quantified in terms of Dickerson's crossbreeding parameters. The base strains did not differ significantly for any of the studied traits, either overall or in their direct and maternal genetic value. F1 does exhibited significant individual heterosis for body weight (5.5% of the parental average), pregnancy rate (13.3%), total born (18.3%), born alive (24.4%) and weaned (21.0%) per litter born. Concerning body weight, a significant crossbred superiority over the 'V' line was retained in the F2 but not thereafter. The rate of pregnancy showed no crossbred advantage from the F2 on. Concerning litter size traits, the benefit of crossbreeding was maintained until the F4, but at a lower magnitude than in the F1. Body weight and pregnancy rate exhibited maternal heterosis, while litter size did not. Direct epistatic losses were significant for body weight, tended towards significance for pregnancy rate, but did not affect litter size. Overall, the comparison between the synthetic strain and the founders was favourable to the synthetics.

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Growth performances and carcass traits in three strains of rabbits and their two-way crosses

Cited by 17 publications

References 6 publications

Heterosis, direct and maternal additive effects on rabbit growth and carcass traits from a Canadian experiment

Heterosis, direct and maternal additive effects on rabbit growth and carcass traits from a Canadian experiment

Effect of Crossbreeding and Mating System on Slaughter Performance and Meat Quality in Three Breed Diallel Crosses of Rabbits

Analysis of reproductive performances during the formation of a synthetic rabbit strain

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