Effect of genotype of growing rabbits on productive performance with special reference to residual feed intake at hot temperature

Fathi, M. M.; Abdelsalam, Mostafa; Al-Homidan, Ibrahim; Abou-Emera, Osama; Rayan, Gamal

doi:10.5713/ab.22.0355

Cited by 1 publication

(1 citation statement)

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“…There are notable differences in the fattening period, carcass characteristics, and the quality of meat among rabbit breeds. In commercial rabbit breeding, crossbreeding between medium and large breeds can be a beneficial option, as it can have a positive impact on the quantity and quality of the final product [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Assessing the Genetic Response of Crossing on Post-Weaning Growth Traits in Rabbits

Shehab El-Din,

Ahmed,

El-Komy

2024

Egyptian Journal of Veterinary Sciences

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HIS STUDY conducted a crossbreeding experiment involving Gabali bucks (GB) and New Zealand White (NZW) rabbits to assess the impact of crossbreeding on post-weaning body weights at 4, 6, 8, 10, and 12 weeks of age. Additionally, daily gain in weight (DG) was computed at intervals of 4-6, 6-8, 8-10, and 10-12 weeks. The crossbreeding genetic parameters (direct additive, maternal effects, and direct heterotic effect) of different traits were estimated. Significant differences (P≤0.001) between genetic groups were observed for all BW and DG4-6. The estimates of direct additive genetic reveal that GB rabbits are significantly superior (p<0.01) to NZW rabbits in postweaning growth body weight (BW6, BW8, BW10) traits at most ages and DG 4-6 , with an increase in BW representing a percentage ranging from 8 to 16.8%, and for DG ranging from 3.2 to 28.1%. The estimates of maternal effect (G M ) reveal that the GB breed had a preference significant G M (p<0.01) compared with the NZW breed at BW6(78.62g) and DG4-6(4.28 g/d), with an increase represented percentages of 9.9 and 19.54% for BW6 and DG4-6, respectively. The NZW breed had a preference G M (p<0.01) for DG traits in the last three intervals (DG6-8, DG8-10, and DG10-12), with percentages ranging from 8.2 to 17.6%. The analysis revealed positive and significant (P≤0. 001) effects of direct heterosis, ranging from 13.2 to 28.5% for BW traits and ranging from 6.2 to 27.9% for DG traits. Crossbreeding GB and NZW rabbits can improve post-weaning growth and contribute to creating high-growth lines for smallholder breeders.

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Section: Introductionmentioning

confidence: 99%