Characterization, genetic evaluation, and genetic trends for some rep | ||||
| Egyptian Poultry Science Journal | ||||
| Articles in Press, Accepted Manuscript, Available Online from 22 February 2021 | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/epsj.2021.64614.1147 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Mohamed Kosba  1; hader abdo aboissa2
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| 1Poultry Production Dep., Faculty of Agriculture (El-Shatby), Alexandria University, Alexandria, Egypt | ||||
| 2poultry department fauclty of agriculture alexandria universty | ||||
| Abstract | ||||
| The present study was conducted on a total number of 792 litters from 210 does of Baladi Black (BB) rabbits to make characterization, have updated information and genetic evaluation for some does reproductive traits of this well-adapted local rabbits included litter traits (litter size at birth; LSB, litter size born alive; LSA, litter size at 21 days; LS21, litter size at weaning; LSW, Litter weight at birth; LWB, Litter weight at weaning; LWW, and the pre-weaning mortality rate; PWM), conception traits (number of services per conception; NSC, and gestation length; GL), and interval traits (kindling interval; KI and days open; DO) and estimate genetic trends for these traits to stand on the genetic changes with the year and season of reproduction. Estimates of heritability (h2) for litter size and litter weight traits are low range (0.08 - 0.14). The estimate of heritability for PWM is relatively moderate (0.15). Estimates of h2 for conception and interval traits in this study are low (0.00-0.06). Repeatability (R) estimates for all litter size traits under study are low to moderate (0.11-0.16). Estimates of repeatability for litter weight traits are low to moderate it ranges between 0.12 and 0.34. The value of repeatability for LWB is higher than other traits. This is a result of the higher values of permanent | ||||
| Keywords | ||||
| Baladi Black; Rabbits; characterization; Genetic evaluation; Genetic trend | ||||
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Statistics Article View: 259 |
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