Arid
DOI10.1016/j.smallrumres.2014.05.009
Genetic parameters for growth and reproductive traits of Morada Nova sheep kept by smallholder in semi-arid Brazil
Shiotsuki, Luciana1; de Oliveira, Danielle Pernambuco2; Braga Lobo, Raimundo Nonato1; Faco, Olivardo1,2
通讯作者Shiotsuki, Luciana
来源期刊SMALL RUMINANT RESEARCH
ISSN0921-4488
EISSN1879-0941
出版年2014
卷号120期号:2-3页码:204-208
英文摘要

The objective of the present study was to estimate genetic parameters for growth and reproductive traits of Morada Nova sheep reared by smallholder farmers in the semi-arid northeastern region of Brazil. Data from 11 participating flocks, between 2007 and 2011, were used for the estimation of (co)variance components and genetic parameters for birth weight (BW), weight at weaning adjusted for 112 days of age (WW), average daily weight gain from birth to weaning (ADG), days to lambing (DL), lambing interval (LI), total litter weight at birth (LWB), total litter weight at weaning (LWW) and the ratio between total litter weight at birth and weaning and metabolic weight of the dam (LWB/MW and LWW/MW, respectively). The direct heritabilities obtained by one-trait analysis were 0.19, 0.14, 0.11, 0.13, 0.0, 0.44, 0.19, 0.41, 0.15, respectively for BW, WW, ADG, DL, LI, LWB, LWW, LWB/MW and LWW/MW. The direct heritabilities for BW and WW obtained by two-trait analysis were similar to those estimated by one-trait analysis. However, the direct heritabilities for LWB, LWW and LWW/MW obtained by two-trait analysis were higher than those estimated by one-trait analysis. The genetic correlation between BW and WW were 0.75 and between LWB, LWW and LWW/MW were 0.8, 0.9 and 1.0, respectively. In conclusion, except for LI, there is genetic variability that can be explored by direct and indirect selection to obtain genetic gains in the flocks participating in the Nucleus of Participatory Breeding of Morada Nova Sheep. (C) 2014 Elsevier B.V. All rights reserved.


英文关键词(Co)variances Genetic correlations Genetic parameters Heritability
类型Article
语种英语
国家Brazil
收录类别SCI-E
WOS记录号WOS:000340337100004
WOS关键词HAIR SHEEP ; COMPONENTS
WOS类目Agriculture, Dairy & Animal Science
WOS研究方向Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/184969
作者单位1.Embrapa Goats & Sheep, Dept Anim Breeding, BR-62070970 Sobral, CE, Brazil;
2.State Univ Acarau Valley, Dept Anim Sci, BR-62040370 Sobral, CE, Brazil
推荐引用方式
GB/T 7714
Shiotsuki, Luciana,de Oliveira, Danielle Pernambuco,Braga Lobo, Raimundo Nonato,et al. Genetic parameters for growth and reproductive traits of Morada Nova sheep kept by smallholder in semi-arid Brazil[J],2014,120(2-3):204-208.
APA Shiotsuki, Luciana,de Oliveira, Danielle Pernambuco,Braga Lobo, Raimundo Nonato,&Faco, Olivardo.(2014).Genetic parameters for growth and reproductive traits of Morada Nova sheep kept by smallholder in semi-arid Brazil.SMALL RUMINANT RESEARCH,120(2-3),204-208.
MLA Shiotsuki, Luciana,et al."Genetic parameters for growth and reproductive traits of Morada Nova sheep kept by smallholder in semi-arid Brazil".SMALL RUMINANT RESEARCH 120.2-3(2014):204-208.
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