Estimation of genetic parameters of conception rate, lambs born and lambs weaned of Rahmani Ewes in Egypt using Gibbs sampling
Abstract: The objective of this study was to estimate the genetic parameters of three important categorical traits in sheep using GIBBS SAMPLING (GS) program. These traits were conception rate (CR), number of lambs born (NLB) and number of lambs weaned (NLW) of Rahmani ewes in Egypt. Data consisted of 1437 Rahmani ewes raised at two farms, Mehallet-Mousa (mid delta) and EI-Serw (North Delta), belong to the Animal Production Research Institute (APRI) Ministry of Agriculture. The model included the effects of location, year of lambing, season and parity as fixed effects and the effects of the additive genetic and permanent environmental variances as random effects. The heritability estimates for CR, LB and LW were 0.01, 0.02 and 0.02 as a result of GS program, respectively. Genetic correlations were 0.93, 0.76 and 0.79 between CR and NLB , CR and NLW and between NLB and NLW, respectively.
Keywords: Rahmani, GIBBS sampling, polychotomous traits, conception rate, number of lambs born, number of lambs weaned.
Publication year 2002
Pages 4565-4570
Availability location معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى- الجيزة
Availability number
Organization Name
City المنصورة
serial title Journal Agricultural Science Mansoura
ISSN 1110-0346
Author(s) from ARC
External authors (outside ARC)
    منال محمد احمد السيد جامعة عين شمس
    عماد فهمى موسى جامعة اسيوط
Agris Categories Animal husbandry
AGROVOC
TERMS		 Egypt. Ewes. Genetic parameters. Lambs. Reproductive performance. Sheep.
Proposed Agrovoc GIBBS SAMPLING;
Publication Type Journal
↑