Genetic Evaluation of animals with and without records for lifetime production traits using single-trait and multi-traits animal models in New Zealand White rabbits
Abstract: Data on 14210 litters of New Zealand White rabbits produced by 2945 does mothered by 1613 dams were analyzed to compute variance components and heritabilities of lifetime production traits. These traits included total number born (TNB), number born alive (TNBA), total number weaned (TNW), and length of lifetime production (LT). For animals with and without records, transmitting abilities (PTA) for these traits were predicted using single-trait (SAM) and multi-traits (MAM) animal models taking into account the relationship coefficient matrix among animals (A-1). Heritability for LT was low (0.09), while the estimates for litter-size traits (i.e. TNB, TNBA and TNW) were moderate and ranged from 0.16 to 0.21. For the list of all dams with records, the ranges in estimates of PTA obtained by the MAM vs SAM were 20.6 vs 11.8 bunnies for TNB, 21.08 vs 10.8 bunnies for TNBA, 11.3 vs 7.1 bunnies for TNW and 1.01 vs 0.82 month for LT. The percentages of dams with positive values of PTA obtained by the MAM vs those obtained by the SAM were 97.4 vs 48.2% for TNB, 97.3 vs 49.2% for TNBA, 99.4 vs 50.8% for TNW and 87.2 vs 50.9% for LT.
Keywords: Rabbits, lifetime, production, animal models.
Publication year 2000
Availability location معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى - الجيزة
Availability number
Organization Name
City الاسكندرية
serial title All Africa/ESAP Conference of Animal Production
Author(s) from ARC
External authors (outside ARC)
    ماهر حسب النبى خليل جامعة بنها
    عزت عطا عفيفى جامعة الزقازيق
    علاء الرفا جامعة الاسكندرية
Agris Categories Animal husbandry
AGROVOC
TERMS		 Animal models. Heritability. Production. Rabbits.
Proposed Agrovoc lifetime;variance components;total number born;number born alive;total number weaned;
Publication Type Conference/Workshop
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