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| Carvalho,Thiago Dutra de; Siqueira,Fabiane; Torres Júnior,Roberto Augusto de Almeida; Medeiros,Sérgio Raposo de; Feijó,Gelson Luís Dias; Souza Junior,Maury Dorta de; Blecha,Isabella Maiumi Zaidan; Soares,Cleber Oliveira. |
| The objective of the present study was to estimate the allelic and genotypic frequencies of the polymorphisms E2FB (AY138588.1: c.305C> T), located in the leptin gene (LEP), and TG5 (X05380.1:g.-422C>T), located in the thyroglobulin gene (TG), and evaluate the association of these polymorphisms in crossbred cattle of seven distinct genetic groups with the following traits: slaughter weight (SW), hot carcass weight (HCW), hot carcass yield (HCY), carcass fat thickness (CFT), ribeye area (REA), marbling (MARM) and shear force (SF). The animals were genotyped using the PCR-RFLP (Polymorphism Chain Reaction-Restriction Fragment Length Polymorphism) technique, using 201 products obtained from F1 Caracu × Nellore, Angus × Nellore and Valdostana × Nellore... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fat thickness; Marker-assisted selection; Meat tenderness; Shear force; SNP. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001000004 |
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| Curi,Rogério Abdallah; Krauskopf,Monique Marcondes; Hadlich,Janaína Conte; Fortes,Marina Rufino Salinas; Vankan,Dianne Margaret; Silva,Josineudson Augusto II Vasconcelos; Oliveira,Henrique Nunes de; Mota,Marcílio Dias Silveira da. |
| The objective of this work was to evaluate the effects of single-nucleotide polymorphisms (SNPs) in the genes IGF1 (AF_017143.1:g.198C>T), MSTN (AF_320998.1:g.433C>A), MYOD1 (NC_007313:g.1274A>G) and MYF5 (NC_007303:g.1911A>G) on carcass and meat traits in Nelore (Bos indicus) and Nelore x B. taurus. A total of 300 animals were genotyped and phenotyped for rib eye area (REA), backfat thickness (BT), intramuscular fat (IF), shear force (SF) and myofibrillar fragmentation index (MFI). The effects of allele substitution for each SNP were estimated by regression of the evaluated phenotypes on the number of copies of a particular allele using the general linear model. The polymorphism at IGF1 was non-informative in Nelore animals. In crossbred... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bos indicus; Candidate gene; Fat deposition; Meat tenderness; Polymorphism. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000200019 |
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| Pedrão,Mayka Reghiany; Lassance,Fernanda; Souza,Nilson Evelazio de; Matsushita,Makoto; Telles,Paulo; Shimokomaki,Massami. |
| The proximate chemical composition of hump, known in Brazil as cupim, Rhomboideus m. (RB), of Nelore (Bos indicus) aged 24 months revealed it to be a unique beef muscle. It presents a lipid fraction 14-fold as high as that of Longissimus dorsi m. (LD) taken from the same animal (p<0.05), the highest value reported so far. This was unequivocally observed by the histological evaluation. Proportionally more protein fraction and conversely less moisture were also observed in RB. Analysis of collagen and its crosslinking with hydroxylysylpyridinium (HP) showed there to be 22.9% more collagen and 14-fold as much HP in RB as in LD. Contrary to the expectations, the tenderness of fresh samples evaluated by Warner Bratzler shear force measurements led to values... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zebu breed; Collagen; Hydroxylysylpyridinium; Meat tenderness; Marbling fat. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000300023 |
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| Curi,Rogério Abdallah; Fortes,Marina Rufino Salinas; Chardulo,Luis Artur Loyola; Silveira,Antonio Carlos; Arrigoni,Mário De Beni; Martins,Cyntia Ludovico; Assumpção,Mayra Elena Ortiz D' Avila; Oliveira,Henrique Nunes de. |
| The objective of this work was to estimate the allelic and genotypic frequencies of CAST/XmnI, a calpastatin gene polymorphism, and CAPN530, a calpain 1 large subunit gene polymorphism, in different beef genetic groups (Nelore and Nelore x Bos taurus), and to investigate associations between these polymorphisms and carcass and meat traits. Three hundred animals - comprising 114 Nelore, 67 Angus x Nelore, 44 Rubia Gallega x Nelore, 41 Canchim, 19 Brangus three-way cross and 15 Braunvieh three-way cross- were genotyped by PCR-RFLP and phenotyped for rib-eye area (REA), back-fat thickness (BT), intramuscular fat (IF), shear force (SF) and myofibrillar fragmentation index (MFI). The occurrence of the two alleles of the CAST/XmnI and CAPN530 single nucleotide... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bos indicus; Calpain gene; Calpastatin gene; Meat tenderness; Single nucleotide polymorphisms. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009001200015 |
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| Moncau,Cristina Tschorny; Rosa,Alessandra Fernandes; Eler,Joanir Pereira; Balieiro,Júlio César de Carvalho. |
| Abstract: The objective of this work was to quantify heat shock proteins (HSP) 27 and 70 in the Longissimus dorsi muscle of cattle during aging and to check their potential as biomarkers for meat quality. A total of 191 steers ½ South African Simmental x ½ Nellore (16-18 months, 391.7±99.7 kg), castrated, and feedlot finished were used. Meat quality was measured by pH, color, cooking loss, and shear force (SF) at 1 and 14 days of aging time. HSP27 and HSP70 were quantified according to the SF values in the more and less tender meat groups, with 20 samples each, for each aging time. HSP27 concentrations in more and less tender meat decrease from 1 to 14 days of aging, and do not differ when evaluated at the same period. HSP70 concentrations in more tender... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bos taurus indicus; Biomarker; HSP27; HSP70; Meat tenderness. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000100090 |
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| Costa,Roberto Germano; Pinto,Tiago Ferreira; Medeiros,Geovergue Rodrigues de; Medeiros,Ariosvaldo Nunes de; Queiroga,Rita de Cássia Ramos do Egypto; Treviño,Israel Hernandez. |
| The objective of this study was to assess the tissue component yields and the physical, chemical and sensory characteristics of meat from Santa Inês sheep fed diets in which cactus pear partially or completely replaced corn. The study used 45 Santa Inês rams with initial live weight of 25±2.5 kg and final weight of 35±1.5 kg in a completely randomized design with five treatments (0, 25, 50, 75 and 100%) and nine replicates per treatment. The leg of the animal was used to analyze the tissue component yields, and the longissimus dorsi muscle was used for assessment of the sensory characteristics and the physical and chemical compositions. The inclusion of cactus pear in the diet increased the adipose tissue percentage quadratically, up to 50%, reducing the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Meat tenderness; Opuntia ficus indica; Proximate composition; Sensory characteristics. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000200028 |
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| Pedreira,Aparecida Carla de Moura Silveira; Luchiari Filho,Albino; Leite,Vanderley Benedito de Oliveira; Carvalho,Marina Hojaij. |
| Among several techniques to improve beef tenderness, vitamin D3, important for calcium mobilization, has recently been developed as an alternative. It acts on the intracellular calcium-dependent proteases (mu- and m-calpain). Ten days prior to slaughter, 36 Nelore steers were fed 0, 3, 6 and 9 million IU of supplemental vitamin D3 (D3) per animal per day (an-1 d-1). Animals were slaughtered and tenderness (shear force), cooking losses (1, 8 and 15 days of aging), sensory evaluation, and minerals in blood plasma and muscle (Longissimus dorsi) were measured. There were no differences (P > 0.05) among treatments for blood plasma and muscle mineral concentration, evaporation losses, and sensory juiciness. For drip and total loss, the smallest losses were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nelore cattle; Meat tenderness; Carcass characteristics. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400005 |
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