Consulta: creatorFacets:"Paim,Tiago do Prado"
Registros recuperados: 7
Data/hora: 03/06/2024 07:24:39

Detection and evaluation of selection signatures in sheep
Provedor de dados: 86
Autores: Paim,Tiago do Prado; Ianella,Patrícia; Paiva,Samuel Rezende; Caetano,Alexandre Rodrigues; Pimentel,Concepta Margaret McManus.
Abstract: The recent development of genome-wide single nucleotide polymorphism (SNP) arrays made it possible to carry out several studies with different species. The selection process can increase or reduce allelic (or genic) frequencies at specific loci in the genome, besides dragging neighboring alleles in the chromosome. This way, genomic regions with increased frequencies of specific alleles are formed, caracterizing selection signatures or selective sweeps. The detection of these signatures is important to characterize genetic resources, as well as to identify genes or regions involved in the control and expression of important production and economic traits. Sheep are an important species for theses studies as they are dispersed worldwide and have...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovis aries; Analysis software; Animal genetic resources; Genetic improvement; Genomics; Molecular genetics; SNP markers.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000500527

Validation of a customized subset of SNPs for sheep breed assignment in Brazil
Provedor de dados: 86
Autores: Paim,Tiago do Prado; McManus,Concepta; Vieira,Fábio Danilo; Oliveira,Stanley Robson de Medeiros; Facó,Olivardo; Azevedo,Hymerson Costa; Araújo,Adriana Mello de; Moraes,José Carlos Ferrugem; Yamagishi,Michel Eduardo Beleza; Carneiro,Paulo Luiz Souza; Caetano,Alexandre Rodrigues; Paiva,Samuel Rezende.
Abstract: The objective of this work was to evaluate the usefulness of a subset of 18 single nucleotide polymorphisms (SNPs) for breed identification of Brazilian Crioula, Morada Nova (MN), and Santa Inês (SI) sheep. Data of 588 animals were analyzed with the Structure software. Assignments higher than 90% confidence were observed in 82% of the studied samples. Most of the low-value assignments were observed in MN and SI breeds. Therefore, although there is a high reliability in this subset of 18 SNPs, it is not enough for an unequivocal assignment of the studied breeds, mainly of hair breeds. A more precise panel still needs to be developed for the widespread use in breed assignment.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ovis aries; Animal genetic resources; Certification of origin; Genomics; Traceability.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000104302

Selection objectives and criteria for sheep in Central Brazil
Provedor de dados: 96
Autores: McManus,Concepta; Pinto,Bruno Freitas; Martins,Rafhael Felipe Saraiva; Louvandini,Helder; Paiva,Samuel Rezende; Braccini Neto,José; Paim,Tiago do Prado.
Three production systems for sheep (Low - L, Medium - M and High - H technology), with increasing technological levels, were studied under conditions in the Center-west of Brazil, to determine economic weights and selection indices of important traits. Receipts and costs were simulated using an economic simulator to calculate the structure of the operational costs. Only characteristics that were responsible for more than 10% of the profit were studied, which included: number of weaned lambs, food consumption (ewe and lamb), weight of carcass and weight of female lambs sold for reproduction. Regardless of the index used (profitability or yield) or system (L, M or H), the economic weights are larger for the number of lambs weaned per ewe. With improvement in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Correlations; Costs; Heritability; Profit; Revenue.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001200014

Impact of feeding cottonseed coproducts on reproductive system of male sheep during peripubertal period
Provedor de dados: 63
Autores: Paim,Tiago do Prado; Viana,Pauline; Brandão,Eduardo; Amador,Samara; Barbosa,Tatiana; Cardoso,Caio; Lucci,Carolina Madeira; Souza,Jurandir Rodrigues de; McManus,Concepta; Abdalla,Adibe Luiz; Louvandini,Helder.
ABSTRACT Cottonseed coproducts contain gossypol which can have specific effects upon the male reproductive system. We evaluated the reproductive development of male lambs close to puberty fed on three cotton coproducts. Twenty-four 5-month old male lambs received four diets: 20 % of dry matter intake of whole cottonseed (WCS), high oil cottonseed meal (CSC), cottonseed meal (CSM), and a control group (CTL) without any cottonseed coproducts. Free gossypol intake was 16.32, 6.98, 5.47 and 0 mg kg−1 BW−1 d−1 for WCS, CSC, CSM and CTL, respectively. Every 15 days, the animals were weighted and serum and semen samples were collected. After 95 days, testis samples were collected for analysis under light and transmission electron microscopes. The CTL group had...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gossypol; Sperm; Testis; Testosterone; Lamb.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000600489

Feeding effects of cottonseed and its co-products on the meat proteome from ram lambs
Provedor de dados: 63
Autores: Paim,Tiago do Prado; Viana,Pauline; Tilburg,Mauricio Fraga van; Moura,Arlindo de Alencar; Souza,Jurandir Rodrigues de; McManus,Concepta; Abdalla,Adibe Luiz; Louvandini,Helder.
ABSTRACT: Gossypol easily pairs with lysine side chains and enzymes involved in the cellular growth process. The effect of gossypol (a compound present in cotton co-products) in ruminant metabolism and meat quality is not yet clear. This study was undertaken in order to evaluate the effects of cotton co-products in lamb muscle proteome. Twenty-four Santa Inês ram lambs, 5-months old (20.6 ± 1.9 kg), were randomly assigned to four treatments: control (without cottonseed), whole cottonseed, cottonseed meal and high oil cottonseed meal. At 95 days into the experiment, lambs were slaughtered and samples from Longissimus dorsi were collected. Proteins were extracted and analyzed by 2-D electrophoresis. Spots showing a significant effect from the treatment (the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gossypol; Dehydrogenase; Skeletal muscle; Sheep; Feedlot.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001600463

Thermal comfort index and infrared temperatures for lambs subjected to different environmental conditions
Provedor de dados: 63
Autores: Paim,Tiago do Prado; Martins,Rafhael Felipe Saraiva; Cardoso,Cyntia; Dallago,Bruno; Louvandini,Helder; McManus,Concepta.
There is an abundance of thermal indices with different input parameters and applicabilities. Infrared thermography is a promising technique for evaluating the response of animals to the environment and differentiating between genetic groups. Thus, the aim of this study was to evaluate superficial body temperatures of lambs from three genetic groups under different environmental conditions, correlating these with thermal comfort indices. Forty lambs (18 males and 22 females) from three genetic groups (Santa Inês, Ile de France × Santa Inês and Dorper × Santa Inês) were exposed to three climatic conditions: open air, housed and artificial heating. Infrared thermal images were taken weekly at 6h, 12h and 21h at the neck, front flank, rear flank, rump, nose,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazilian savanna; Bioclimatology; Thermal stress; Wind protection; Artificial warming.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000500002

Sistematização da origem, da distribuição e dos territórios da artéria cerebral caudal na superfície do encéfalo em gatos
Provedor de dados: 65
Autores: Lima,Eduardo Maurício Mendes de; Prada,Irvênia Luiza de Santis; Silva,Frederico Ozanam Carneiro e; Severino,Renato Souto; Santos,André Luis Quagliatto; Borges,Bárbara Oliveira; Paim,Tiago do Prado; Vianna,André Rodrigues da Cunha Barreto.
Foram estudados 26 encéfalos de gatos, adultos, sem diferenciação de sexo, sem raça definida, corados com látex e fixados por solução aquosa de formaldeído. As artérias cerebrais caudais, direita e esquerda, apresentaram-se únicas em 96,1 e 88,4% dos casos, respectivamente. Em 69,2% dos casos no antímero direito e 80,8% no esquerdo, a artéria cerebral caudal originou-se pela anastomose entre o ramo caudal da artéria carótida interna, com maior contribuição, e o ramo terminal da artéria basilar. Em 88,4% dos casos no antímero direito e em 84,6% no esquerdo, a artéria cerebral caudal originou a artéria tectal rostral e um ramo caudal. O ramo caudal bifurcou-se e vascularizou os colículos rostrais e caudais dos corpos quadrigêmeos e em alguns casos contribuiu...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Encéfalo; Artéria cerebral caudal; Felis catus domesticus.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000900017