• Title/Summary/Keyword: Weinberg

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Effects of CSN1S2 Genotypes on Economic Traits in Chinese Dairy Goats

  • Yue, X.P.;Fang, Q.;Zhang, X.;Mao, C.C.;Lan, X.Y.;Chen, H.;Lei, Chuzhao
    • Asian-Australasian Journal of Animal Sciences
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    • 제26권7호
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    • pp.911-915
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    • 2013

  • The aim of this study was to investigate allele frequencies at the CSN1S2 locus in two Chinese dairy goat breeds and the effects of its variation on dairy goat economic traits. Seven hundred and eight goats from Xinong Saanen (XS, n = 268) and Guanzhong (GZ, N = 440) breeds were selected. The milk samples of 268 XS goats were collected during the middle of lactation, body size parameters (708 goats) and daily milk yield (202 goats) were registered. The RFLP (restriction fragment length polymorphism) and SSCP (single strand conformation polymorphism) were used to detect the polymorphisms in CSN1S2. The Hardy-Weinberg (HW) equilibrium and the associations between body size, milk yield and composition and the genotypes were calculated. The results revealed that only A and F CSN1S2 alleles were found in the two Chinese dairy goat breeds. Allelic frequencies of A and F were 0.795, 0.205 and 0.739, 0.261 in Xinong Saanen and Guanzhong population respectively. Xinong Saanen breed was in Hardy-Weinberg equilibrium, while Guanzhong breed deviated from Hardy-Weinberg equilibrium (p<0.05). The association of polymorphism with economic traits indicated that the goats with FF genotype have higher milk fat and total solid concentration than those with AA and AF genotypes (p<0.05).

  • https://doi.org/10.5713/ajas.2013.13018 인용 PDF KSCI

All-Sky Distribution of the Zodiacal Thermal Emission

  • Kwon, S.M.;Hong, S.S.;Weinberg, J.L.;Lee, C.
    • 한국우주과학회:학술대회논문집(한국우주과학회보)
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    • 한국우주과학회 2000년도 한국우주과학회보 제9권2호
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    • pp.48-48
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    • 2000

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Study on Genetic Diversity of Six Duck Populations with Microsatellite DNA

  • Wu, Yan;Liu, Xiao-Lin;Hou, Shui-Sheng;Huang, Wei
    • Asian-Australasian Journal of Animal Sciences
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    • 제21권6호
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    • pp.776-783
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    • 2008

  • In this study, we investigated the genetic diversity and phylogenetic relationship of six duck populations by employing the genetic polymorphisms of 20 microsatellites. The parameters used in this study included number of alleles, average effective numbers of alleles (E) and average rates of heterozygosity of each population. The results showed that all the microsatellite loci were highly polymorphic except that the locus AJ515896 in Muscovy duck was 0. The average PIC (0.762), average h (0.7843) and average E (5.261) of the six duck populations were all high, indicating that the gene polymorphisms and genetic diversity were high. The test of Hardy-Weinberg equilibrium showed that the six populations in this study were all in Hardy-Weinberg disequilibrium. The F-statistic analysis results showed the range of FST was from 0.0205 (AJ515895) to 0.2558 (AJ515896). The mean FST was 0.0936. Phylogenetic study revealed that Peking duck (Z1 and Z4), Shaoxing duck, Cherry Valley duck and Aobaixing duck were clustered in one group, while the Muscovy duck was clustered in one group alone. The phylogenetic relationships among different populations were in accordance with their breeding history and distribution. Our data suggested that the 20 microsatellite loci were effective markers for analysis of genetic relationships among duck populations.

  • https://doi.org/10.5713/ajas.2008.70367 인용 PDF KSCI