Genetic parameters and genetic trends in the Chinese x European Tiameslan composite pig line. I. Genetic parameters.

Genetic parameters and genetic trends in the Chinese x European Tiameslan composite pig line. I. Genetic parameters.
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DOI:
10.1186/1297-9686-32-1-41
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发表时间:
2000-01
期刊:
Genetics, selection, evolution : GSE
影响因子:
--
通讯作者:
Naveau J
Naveau J
中科院分区:
其他
文献类型:
--
作者:
Zhang S;Bidanel JP;Burlot T;Legault C;Naveau J

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4周龄(W 4 w)、8周龄(W8 w)和22周龄(W22 w)时体重、20 - 100 kg天数(DT)、100 kg时平均背膘厚(ABT)、乳头数(TEAT)、好乳头数(GTEAT)、每窝仔猪出生总数(TNB)、活产仔猪(NBA)和断奶仔猪(NW)的遗传参数,应用限制性最大似然法对多性状动物模型中的中欧Tiameslan复合系的产乳成活率(SURV)进行了估计。分析了来自1341窝的总共4881只雄性和4799只雌性的性能数据。不同的模型拟合的数据,以估计母体对生产性状的影响的重要性,以及男性和女性的表现之间的遗传相关性。结果表明,W 4 w、W8 w和ABT存在显著的母体效应,W22 w、DT、ABT和GTEAT存在显著的性别间方差异质性。W22 w、DT和ABT的性别间遗传相关分别为0.79、0.71和0.82,其余性状的性别间遗传相关均在0.90以上。遗传力估计值大于(ABT和TEAT)或类似(其他性状)的平均文献值。生产性状,特别是W 4 w、W8 w和ABT与繁殖性状之间存在一定的遗传拮抗作用。
Genetic parameters of body weight at 4 (W4 w), 8 (W8 w) and 22 (W22 w) weeks of age, days from 20 to 100 kg (DT), average backfat thickness at 100 kg (ABT), teat number (TEAT), number of good teats (GTEAT), total number of piglets born (TNB), born alive (NBA) and weaned (NW) per litter, and birth to weaning survival rate (SURV) were estimated in the Chinese × European Tiameslan composite line using restricted maximum likelihood methodology applied to a multiple trait animal model. Performance data from a total of 4 881 males and 4 799 females from 1 341 litters were analysed. Different models were fitted to the data in order to estimate the importance of maternal effects on production traits, as well as genetic correlations between male and female performance. The results showed the existence of significant maternal effects on W4w, W8w and ABT and of variance heterogeneity between sexes for W22w, DT, ABT and GTEAT. Genetic correlations between sexes were 0.79, 0.71 and 0.82, respectively, for W22w, DT and ABT and above 0.90 for the other traits. Heritability estimates were larger than (ABT and TEAT) or similar to (other traits) average literature values. Some genetic antagonism was evidenced between production traits, particularly W4w, W8w and ABT, and reproductive traits.
DOI: 10.1051/gse:19890308
发表时间: 1989-01-01
影响因子: 4.1
作者:
MEYER, K
通讯作者: MEYER, K
DOI: 10.1016/0301-6226(86)90015-1
发表时间: 1986-06-01
期刊: LIVESTOCK PRODUCTION SCIENCE
影响因子: --
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发表时间: 1992-06-01
影响因子: 3.3
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通讯作者: KRIESE, LA
DOI: 10.2527/jas1981.524906x
发表时间: 1981-01-01
影响因子: 3.3
作者:
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通讯作者: JOHNSON, RK
DOI: 10.1186/1297-9686-15-2-225
发表时间: 1983-01-01
影响因子: 4.1
作者:
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