Research Article

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01/20/2009
Beef cattle; Bos indicus; Carcass traits; Single nucleotide polymorphisms; Tenderness

Data from purebred Brahman steers (N = 467) were used to study the association of single nucleotide polymorphisms (SNP) with carcass traits and measures of tenderness. Fall weaned calves were grazed and fed in a subtropical environment and then harvested for processing in a commercial facility. Carcass data were recorded 24 h postmortem. Muscle samples and primal ribs were obtained to measure ... more

T. Smith; M.G. Thomas; T.D. Bidner; J.C. Paschal; D.E. Franke
02/03/2009
Animal breeding; Breeding value; Carcass yield; Genetic gain; Poultry

Data from the slaughter of 24,001 chickens that were part of a selection program for the production of commercial broilers were used to estimate genetic trend for absolute carcass (CW), breast meat (BRW), and leg (LW) weights, and relative carcass (CY), breast meat (BRY), and leg (LY) weights. The components of (co)variance and breeding values of individuals were obtained by the restricted ... more

J.L.B.M. Grosso; J.C.C. Balieiro; J.P. Eler; J.B.S. Ferraz; E.C. Mattos; M. Filho; A.M. Felício; F.M. Rezende
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Calpain; Genetic marker; Poultry; Shear force

Meat quality is an important feature for the poultry industry and is associated with consumer satisfaction. The calpain 1 (CAPN1) gene is related to the tenderness process of meat post- mortem, and the calpain 3 (CAPN3) gene plays an important role in myofibrillar organization and growth. The objective of the present study was to identify polymorphisms in these genes and ... more

A.M. Felício; C. Boschiero; J.C.C. Balieiro; M.C. Ledur; J.B.S. Ferraz; M. Filho; A.S.A.M.T. Moura; L.L. Coutinho
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Longitudinal data; Poultry; Random regression

We estimated genetic parameters for egg production in different periods by means of random regression models, aiming at selection based on partial egg production from a generation of layers. The production was evaluated for each individual by recording the number of eggs produced from 20 to 70 weeks of age, with partial records taken every three weeks for a total of 17 periods. The ... more

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Poultry production is faced with different types of stresses that are responsible for issues of animal welfare as well as for economic losses. Moreover, the immunity decreases when animals are stressed. In silico analyses are important in reducing the cost and in increasing the accuracy of scientific results. A bioinformatics tool was used to perform ontology studies on 15 different ... more

L.J. Lara; A.P. Peconick; É.J. Fassani; A.M.P. Júnior; P.R.B. Chalfun; D.L. Raymundo; T.A. Barçante; J.M. de P. Barçante
01/18/2011
Allelic polymorphism; Balancing selection; Cynoglossus semilaevis; Major histocompatibility complex

Major histocompatibility complex (MHC) genes play an important role in the immune response of vertebrates. Allelic polymorphism and evolutionary mechanism of MHC genes have been investigated in many mammals, but much less is known in teleosts. We examined the polymorphism, gene duplication and balancing selection of the MHC class II DAB gene of the half-smooth tongue sole ( ... more

T.J. Xu; Y.N. Sun; R.X. Wang
11/22/2013
Cloning; Expression; Major histocompatibility complex; Stone flounder

Major histocompatibility complex (MHC) class II genes play important recognition roles in the immune system in vertebrates. We cloned the MHC class II genes A and B in the stone flounder (Kareius bicoloratus). The full-length cDNA and DNA sequences of both genes were obtained, and their characteristic motifs were analyzed. The DNA sequence of stone flounder MHC ... more

J. Jiang; C. Li; Q. Zhang; X. Wang
06/18/2015
Capra hircus; Domestic goat; DRA; Major histocompatibility complex

DRA encodes the alpha chain of the DR heterodimer, is closely linked to DRB and is considered almost monomorphic in major histocompatibility complex region. In this study, we identified the exon 2 of DRA to evaluate the immunogenetic diversity of Chinese south indigenous goat. Two single nucleotide polymorphisms in an untranslated region and one synonymous substitution in coding region were ... more

L.P. Chen; G.X. E; Y.J. Zhao; R.S. Na; Z.Q. Zhao; J.H. Zhang; Y.H. Ma; Y.W. Sun; T. Zhong; H.P. Zhang; Y.F. Huang
04/13/2005
DNA; Minisequencing; Multiplex; Polymorphisms; Single nucleotide polymorphisms

Several technologically sophisticated high-throughput techniques have been recently developed for the study of human single nucleotide polymorphisms and the diagnosis of point mutations in human diseases. However, there is also a need for simple and inexpensive techniques suitable for clinical services and small research laboratories. Minisequencing meets the latter requirements. It is ... more

C.M.B. Carvalho; S.D.J. Pena
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Genetic polymorphisms; Lipid profile; Marker assisted selection; Molecular markers; Nellore cattle; Single nucleotide polymorphisms
F.M. Rezende

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