A comparison between Baladi black and APRI rabbits in litter and fertility traits as affected by season of the year and parity

Abstract: Data of 2488 litters, 1704 APRI and 784 Baladi Black (BB) rabbits were analyzed to compare both lines for litter traits; litter size at birth (LSB), litter born alive (LSA), litter weight at birth (LWB), litter size at 21 days of age (LS21), litter weight at 21 days of age (LW21), litter size at weaning (LSW) and litter weight at weaning(LWW), as well as, fertility traits; kindling interval (KI), gestation length (GL), number of services per conception (NSC). Fixed effects of breed, year-season and parity were included in the model which had significant effects on most traits. Linear contrasts were estimated as the difference between values of the lines (APRI vs. BB), parities (1st vs the rest) and year season (winter vs the rest). Linear contrasts between two lines showed significant (P<0.05) superiority of APRI line over BB rabbits in all traits. On other hand, performance variation of APRI line among seasons evidenced more adaptive of BB breed with Egyptian condition.
The current results suggest using APRI then BB as an adapted line with better performance in Egypt. Moreover, resumption of the genetic improvement programs in BB rabbit to improve their performances is recommended. .
Keywords: Rabbits, litter traits, fertility, year-season, parity.
Publication year 2013
Pages 106-113
Availability location معهد بحوث الانتاج الحيوانى-شارع نادى الصيد- الدقى- الجيزة
Availability number
Organization Name
serial title The 4th Scientific Conference of Animal Production Research Institute (APRI)
Author(s) from ARC
External authors (outside ARC)
    جلال صبحى ابو خديجة جامعة الاسكندرية - فرع مطروح
Agris Categories Animal physiology - NutritionAnimal physiology - Reproduction
Fertility. Litter size. Rabbits. Weight.
Proposed Agrovoc parity;year-season;litter traits;litter born alive;
Publication Type Conference/Workshop