Estimation of genetic parameters for litter size and weight traits in NZW rabbits raised in Hungary
Abstract: The genetic parameters of litter size and weight traits were estimated in the New Zealand White (NZW) breed raised in a rabbit farm that belongs to the Institute for Small Animal Research, Godollo, Hungary. Using Multi-Trait Derivative-Free Restricted Maximum Likelihood (DF-REML) procedure applied to a multiple trait animal model, five traits were analyzed: litter size at birth (LSB), litter size at weaning (LSW) at 6 weeks, litter size at marketing (LSM) at 10 weeks, litter weight at weaning (LWW) and litter weight at marketing (LWM). The genetic parameters were then used to estimate genetic trends between 1992 and 1997, using the BLUP methodology. The data consisted of 3956 litters from 525 dams and 212 sires. Heritability of LSB, LSW, LSM, LWW and LWM were: 0.03,
0.03, 0.03, 0.09, and 0.07 respectively. LSW was strongly correlated with LWW and LSM, as well as LWW with LSM while the correlations between LSB and LSW or LWW were positive but low. The number of sires having positive transmitting ability (TA) records reached less than 50% at all traits while the number of dams having positive TA records reached <50% at all traits studied. The ranks of sire TA were generally low 46.2, 45.2, 44.3, 45.7 and 46.6 while 56.1, 60.3, 61.1, 62.1 and 62.8 considerable high of dams for LSB, LSW, LSM, LWW and LWM traits of NZW rabbits.
Key words: Litter size, Heritability, Correlation, Transmitting ability.
Publication year 2008
Pages 185-188
Availability location معهد بحوث الانتاج الحيوانى-شارع نادى الصيد- الدقى - الجيزة
Availability number
Organization Name
City فيرونيا
serial title 9th World Rabbit Congress
Author(s) from ARC
External authors (outside ARC)
    رياض يوسف نوفل جامعة كفر الشيخ
    احمد عبد الغنى جامعة الاسماعيلية
    فاليونى جيورجى المجر
Agris Categories Animal husbandry
AGROVOC
TERMS		 Dams. Fathers. Genetic parameters. Heritability. Litter size. Rabbits.
Proposed Agrovoc Transmitting ability;Correlation;weight traits;
Publication Type Conference/Workshop
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