Research Article

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ARMS-PCR; Genotyping; mutations; PCR-SSCP; PRNP alleles; Sheep

Anti-scrapie breeding programs have been initiated to screen for scrapie-resistant sheep based on ovine prion protein gene (PRNP) genotypes at codons 136, 154 and 171 in many countries, especially European Union member states. However, investigation of sheep PRNP genotypes is limited in China, despite the large number of sheep breeds. We analyzed 432 sheep of five different breeds from ... more

C.L. Zhao; R. Wu; L. Liu; F.D. Li; X.L. Zhang; C. Wang; F. Wang; X.L. Diao; H.W. Guan; X. Wang; L. Zhou
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GFI1B gene; Growth trait; Indigenous Chinese goats; PCR-RFLP; PCR-SSCP

This study aimed to investigate polymorphisms of the eighth exon in the GFI1B gene among three indigenous Chinese goat breeds (QianBei Ma goats, GuiZhou white goats, and GuiZhou black goats). Furthermore, association analysis was conducted between these polymorphisms and growth traits. Polymerase chain reaction-single strand conformation polymorphism (PCR-SSCP), direct DNA ... more

H.F. Cai; Z. Chen; W.X. Luo
09/09/2011
Angiotensin-II; Anti-aging; Apoptosis; IGF-1; klotho gene; PTH

Inactivation of the klotho gene in mice causes serious systemic disorders, resembling human aging. However, at the molecular level, its action mechanisms are not well understood. The stimulatory or inhibitory effects of cis- and trans-regulatory factors on the klotho gene expression are also still unclear. We studied the effects of intra- and extracellular factors on ... more

K. Turan; P. Ata
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Dairy cattle; Fertility; Growth hormone; IGF-1; Single nucleotide polymorphism

The somatotrophic axis (GH-IGF) is a key regulator of animal growth and development, affecting performance traits that include milk production, growth rate, body composition, and fertility. The aim of this study was to quantify the association of previously identified SNPs in bovine growth hormone (GH1) and insulin-like growth factor 1 (IGF-1) genes with direct ... more

M.P. Mullen; C.O. Lynch; S.M. Waters; D.J. Howard; P. O’Boyle; D.A. Kenny; F. Buckley; B. Horan; M.G. Diskin
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Sequence polymorphisms in the growth hormone (GH) gene and its transcriptional regulators, Pit-1 and Prop-1, were evaluated for associations with growth and carcass traits in two populations of Brangus bulls Chihuahuan Desert Rangeland Research Center (CDRRC, N = 248 from 14 sires) and a cooperating breeding program (COOP, N = 186 from 34 sires). Polymorphisms were SNP mutations in intron 4 (C ... more

M.G. Thomas; R.M. Enns; K.L. Shirley; M.D. Garcia; A.J. Garrett; G.A. Silver
03/28/2007
Dog breeds; Growth; Polymorphism; SNP; SOCS2

Suppressor of cytokine signaling 2 (SOCS2) is a negative regulator of growth hormone signaling. The deletion of SOCS2 in mice results in a 30-50% increase in post-natal growth. In an effort to identify polymorphisms in the SOCS2 gene that may be associated with body size in dogs, we characterized the canine SOCS2 gene and analyzed its genetic diversity among small and large dog breeds ... more

G. Rincón; A.E. Young; D.L. Bannasch; J.F. Medrano
09/15/2011
Beef; Bovine; Genome; Livestock; Molecular markers; SNP

We analyzed single nucleotide polymorphisms in calpain, leptin, leptin receptor, and growth hormone receptor genes and their association with color, drip and cooking losses of longissimus muscle at 7, 14 and 21 days postmortem in 638 purebred Nellore bulls slaughtered between 22 and 26 months of age. Meat samples were vacuum-packed and aged at 4°C. The single nucleotide polymorphisms ... more

L.F.B. Pinto; J.B.S. Ferraz; V.B. Pedrosa; J.P. Eler; F.V. Meirelles; M.N. Bonin; F.M. Rezende; M.E. Carvalho; D.C. Cucco; R.C.G. Silva
05/31/2011
Body measurement traits; Cattle; GDF10 gene; SNP

Body measurement traits are known to play numerous important roles in the assessment of productivity and economic value. They are influenced by several factors, among which genetic factors are predominant. The gene GDF10 is involved in skeletal morphogenesis and is associated with body measurement traits. It may be an important candidate gene for marker-assisted selection. We ... more

C. Adoligbe; L.S. Zan; H.B. Wang; J.A. Ujjan
10/19/2010
IL-6; Insulin resistance; SNP; TCF7L2; TNF; VDR

A population-based study was undertaken to evaluate linkage between single-nucleotide polymorphisms known as risk factors and type 2 diabetes in an Indian population. The study population was comprised of 40 normal glucose-tolerant individuals (21 males and 19 females) and 40 type 2 diabetes patients (21 males and 19 females). The genes and their corresponding single-nucleotide ... more

P.N. Mukhopadhyaya; A. Acharya; Y. Chavan; S.S. Purohit; A. Mutha
08/31/2010
Cattle; Meat quality traits; MYPN gene; PCR-RFLP; SNP

Myopalladin (MYPN) is a multifunctional protein that maintains sarcomeric integrity and regulates Z-line structure. It is an important candidate gene for meat quality selection through marker-assisted selection. Using PCR-RFLP technology, we discovered a single-nucleotide polymorphism (SNP) (A1795G in exon 9) of the MYPN gene. Allele frequencies of this SNP were investigated and evaluated ... more

Y. Jiao; L.S. Zan; Y.F. Liu; H.B. Wang; B.L. Guo

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