ESTIMATION OF DOE BREEDING VALUES FOR LITTER TRAITS OF NEW ZEALAND WHITE AND CALIFORNIAN RABBITS RAISED UNDER EGYPTIAN DESERT CONDITIONS USING ANIMAL MODEL | ||
| Journal of Animal and Poultry Production | ||
| Article 16, Volume 27, Issue 2, February 2002, Pages 979-990 PDF (3.87 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jappmu.2002.253348 | ||
| Authors | ||
| H. I. Zaky,1; Z. A. M. Sabra2 | ||
| 1Department of Animal and Poultry Breeding, Animal and Poultry Production Division, Desert Research Center, Mataryia- Cario, Egypt. | ||
| 2Animal Production Research Institute, Ministry of Agriculture, Dokki, Cairo, Egypt. | ||
| Abstract | ||
| A total of 382 litters produced from 38 New Zealand White does (NN) and 46 Californian (CC) ones were used in the present study during the period 1998 to 2000, to evaluate genetically doe litter traits. The litter traits studied were litter size at birth (LSB), litter size at weaning (LSW) , litter weight at birth (LWB), litter weight at weaning (LWW), mean bunny weight at birth (MBWB), mean bunny weight at weaning (MBWW) and litter gain at weaning (LGW). Estimates of doe variance components for litter traits were moderate. These estimates were higher in NN rabbits than in CC ones for most traits. Repeatability estimates were moderate and ranged in NN rabbits from 0.26 to OAO. While, they ranged from 0.23 to OA2 in CC ones. The range in estimates of doe breeding values (DBY) were higher in (NN) than those of (CC) rabbits. The range of DBV's in (NN) rabbits vs. (CC) were 3.22 vs. 2.58 bunnies, 2.1 vs. 1.12 bunnies, 128.7 vs 169.5 g. 581.1 vs 454.9 g, 7.65 vs 16.9 g, 11.7 vs 126.0 g and 424.9 vs 293.2 g for LSB, LSW, LWB, LVVW, MBW8, MBWW and LGW, respectively. The percentages of does having positive estimates of DBV ranged from 43.5 to 57.9 for all does in the two breeds used in this study. | ||
| Keywords | ||
| Doe variance components; repeatability; doe breeding values | ||
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