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| Registros recuperados: 190 | |
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| Carreira,J.T.; Trevizan,J.T.; Kipper,B.H.; Perri,S.H.V.; Carvalho,I.R.; Rodrigues,L.H.; Silva,C.; Koivisto,M.B.. |
| The routine semen evaluation assessing sperm concentration, motility and morphology, does not identify subtle defects in sperm chromatin architecture. Bulls appear to have stable chromatin, with low levels of DNA fragmentation. However, the nature of fragmentation and its impact on fertility remain unclear and there are no detailed reports characterizing the DNA organization and damage in this species. The intensive genetic selection, the use of artificial insemination and in vitro embryo production associated to the cryopreservation process can contribute to the chromatin damage and highlights the importance of sperm DNA integrity for the success of these technologies. Frozen-thawed semen samples from three ejaculates from a Nellore bull showed high... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Bovine; Chromatin integrity; Protamine; Sperm morphology. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000200417 |
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| ACOSTA, Tomas J.; TETSUKA, Masa; MATSUI, Motozumi; SHIMIZU, Takashi; BERISHA, Bajram; SCHAMS, Dieter; MIYAMOTO, Akio; 松井, 基純; 清水, 隆; 宮本, 明夫. |
| The aim of the present in vivo study was to monitor real-time fluctuations of cortisol (Cr) in the wall of preovulatory follicles using a microdialysis system (MDS) implanted in the theca layer as well as changes in ovarian venous plasma (OVP) and jugular venous plasma (JVP). Seven cows were superovulated using FSH and prostaglandin F2α injections. Dialysis capillary membranes were surgically implanted into the theca layer of mature follicles and connected to a microdialysis system. Fractions of the perfusates were collected from Day -1 (Day 0=LH surge) to Day 3. No difference in the concentrations of Cr between JVP and OVP was detected throughout the experiment. Circulating concentrations of Cr ranged from 20 to 35 ng/ml 8 h after surgery in ovulatory and... |
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Palavras-chave: Bovine; Cortisol; Follicle; Ovary; Ovulation. |
| Ano: 2005 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2980 |
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| Vargas Junior,Fernando Miranda de; Sanchez,Luis Maria Bonnecarrère; Wechsler,Francisco Stefano; Bianchini,Waldmaryan; Oliveira,Marcus Vinicius Morais de; Schmidt,Patrick. |
| The objective of the present study was to evaluate the ruminal dynamics of dairy steer fed diets containing whole corn grains, grains ground into grits or whole grain treated with urea. Thus, six rumen-fistulated animals were kept in confinement and fed diets with similar contents of energy and protein. The diet was formulated with 40:60 roughage:concentrate ratio in the dry matter using sorghum silage as roughage. The experiments followed a 3 × 3 latin square design, with three animals and three periods and they were repeated eith-er two or four times depending on the studied parameter, totaling six or 12 replicates per diet. Corn grain treatment did not affect the pH of the ruminal fluid neither the ruminal degradability of dry matter, acid detergent... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacterial activity; Bovine; In situ degradability. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000200027 |
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| TULLIO, R. R.; ALMEIDA, I. L. de; BRUM, P. A. R. de. |
| A desmama de bezerros, na regiao do Pantanal Mato-Grossense, e feita geralmente, na faixa de 10 a 12 meses, quando nao ocorre naturalmente. Este procedimento provoca um desgaste nutricional excessivo nas femeas em aleitamento, retardando ou inibindo o aparecimento de cio apos o parto. A consequencia da desmama antecipada sera a reducao do periodo de aleitamento, permitindo um recuperacao mais rapida as femeas e propiciando-lhes condicoes para entrarem em cio mais cedo. Assim, podera ser reduzido o intervalo entre partos e, consequentemente, aumentando o numero de bezerros nascidos. Desta forma, procura-se promover a repeticao de cria das vacas, num periodo mais curto, por simples pratica de manejo, sem prejuizo do desenvolvimento dos bezerros. |
| Tipo: Outras publicações técnicas (INFOTECA-E) |
Palavras-chave: Bovine; Bull-calf.; Bezerro; Bovino; Manejo; Reprodução.; Reproduction.. |
| Ano: 1980 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/787806 |
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| Cleef, Eric Haydt Castello Branco Van; Unesp, Jaboticabal; Ezequiel, Jane Maria Bertocco; Unesp, Jaboticabal; Fontes, Nivia Araujo; UNESP; Faturi, Cristian; UFRA, Belém; Oliveira, Priscila Neubern; UFSCAR; Stiaque, Marcelo Gil; UNESP. |
| The aim of this study was to evaluate the intake and total and partial digestibility of diets using corn, soybean hulls and citrus pulp associated with sunflower meal or urea in feedlot steers. Four steers ½ Aberdeen Angus vs. ½ Nellore, fitted with rumen and duodenum cannulas, with 18 months old and 360 kg of initial weight. The diets were composed of two energy sources (corn and citrus pulp) associated with two nitrogen sources (urea and sunflower meal), in a total of four treatments, with forage:concentrate ratio of 40:60. The statistical design was a Latin square with four treatments and four periods of 21 days each. The average daily dry matter intake was influenced (p < 0.05) by the diets, with the highest value was observed in corn and sunflower... |
| Tipo: Fieldwork; laboratory analysis |
Palavras-chave: Bovine; Co-products; Digestion; Energy sources; Nitrogen sources 5.04.03.00-1 Bovinos; Coprodutos; Digestão; Fontes energéticas; Fontes nitrogenadas. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/11049 |
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| Menezes,Gustavo Chamon de Castro; Valadares Filho,Sebastião de Campos; Magalhães,Felipe Antunes; Valadares,Rilene Ferreira Diniz; Prados,Laura Franco; Detmann,Edenio; Pereira,Odilon Gomes; Leão,Maria Ignez. |
| It was evaluated intake, total apparent digestibility, performance and feeding behavior of bovine fed diets constituted of corn silage, crushed sugar cane given fresh or crushed and given 72 hours after storage, ensilaged sugar cane with or without 1% of calcium oxide and concentrate at the proportion of 1% of the body weight. It was used 35 bovines, distributed in a random block design, with 5 treatments and 6 repetitions. The animals were housed in collective stalls with troughs individualized by electronic gates. The animals fed diet with corn silage presented greater intake of all nutrients and greater total digestibility of dry matter, organic matter, neutral detergent fiber and total digestible nutrients, as well as greater weight gain and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bovine; Carcass; Digestibility; Electronic gates; Feedlot; Weight gain. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000500022 |
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| Araújo,M.C.C.; Vale Filho,V.R.; Ferreira,A.M.; Sá,W.F.; Barreto Filho,J.B.; Camargo,L.S.A.; Serapião,R.V.; Silva,M.V.G.B.. |
| The effect of cryopreservation in IFN-tau, from bovine embryos produced in vitro was evaluated. Two treated groups (G1= fresh bovine embryos, n=59 and G2= freezed embryos, n=84) were used to study the effect of cryopreservation on IFN-tau secretion. After reaching the blastocyst phase, the embryos were kept on individual culture for additional period of 7 days. On days 3 and 7 after the beginning of embryos cultivation, samples of the media culture were taken for IFN-tau secretion titration. Oocysts taken from follicles ranging from 3 to 5mm in diameter were obtained from ovaries of females at slaughterhouse. The embryos were frozen, after being dehydrated with ethylene glycol (1.8m), conditioned on 0.5ml palletes and frozen. Frozen embryos secreted lower... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bovine; Embryo; PIV; Interferon-tau. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352005000600008 |
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| Birgel Junior, Eduardo Harry; Meirelles, Flávio Vieira; Maiorka, Paulo Cesar; Kubrusly, Flávia Saldanha; Ollhoff, Rudiger Daniel. |
| Despite all efforts during the last four years to improve cloned newborn care, the mortality rate of calf after term is still high, around 50%. Clinical symptoms observed in these cloned calf were related to severe cardiopulmonary disorders like hyperphonese, diastolic and systolic cardiac murmurs associated to dyspnea and crackling lung sounds. Due to the patency of the Foramen Ovale and Ductus Arteriosus, in which causes the mix of arterial and venous blood, the blood oxygenation in these cloned calf is compromised. In addition, cloned calf could also present increased birth weight, hypoglycemia, hypothermia, umbilical cord abnormalities, anemia, and alopecia. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cloned calf; Somatic cell nuclear transfer (SCNT); Bovine; Disease; Cardiopulmonary disorders bezerro clonado; Transferência nuclear de célula somática (TNCS); Bovino; Doença; Distúrbios cardiopulmonares. |
| Ano: 2011 |
URL: http://www.revistamvez-crmvsp.com.br/index.php/recmvz/article/view/379 |
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| ALMEIDA, I. L. de; ABREU, U. G. P. de; LOUREIRO, J. M. F.; COMASTRI FILHO, J. A.. |
| O trabalho foi baseado no acompanhamento tecnico da fazenda Campo Eunice, localizada na sub-regiao dos Paiaguas, no periodo de maio/91 a maio/95, onde foram realizados oito "trabalhos de gado", dois a cada ano (maio/junho e novembro/dezembro). As tecnologias implantadas e/ou adaptadas foram: monta controlada, formulacao mineral propria para a sub-regiao, desmama antecipada e everminacao estrategica dos bezerros desmamados. As vacas foram identificadas atraves de numeracao e os touros submetidos a dois exames andrologicos durante o periodo. Em cada "trabalho de gado" as femeas que passavam pelo curral eram visualmente classificadas como "criando/mojando" ou "solteira", proporcionando o acompanhamento de seu desempenho produtivo e reprodutivo, permitindo o... |
| Tipo: Circular Técnica (INFOTECA-E) |
Palavras-chave: Bovino de corte; Paiaguas; Brasil; Beef cow; Bovine; Breed; Management.; Criação; Manejo; Tecnologia.; Brazil; Pantanal; Beef cattle; Technology.. |
| Ano: 1996 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/792180 |
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| ABREU, U. G. P. de; CHALITA, L. V. A. S.; MORAES, A. S.; LOUREIRO, J. M. F.. |
| A difusao e adocao de tecnologias no sistema de producao do Pantanal sempre constituiram pontos de estrangulamentos para o aumento da eficiencia da atividade pecuaria na regiao. Por meio do acompanhamento tecnico do retiro Chatelodo, localizado na sub-regiao da Nhecolandia, MS, no periodo de maio/1984 a novembro/1998, foi possivel avaliar o efeito da introducao de tecnologias no sistema de producao tradicionalmente realizado na regiao. O estudo foi desenvolvido durante nove "trabalhos de gado", dois a cada ano (maio/junho e outubro/novembro). As tecnologias implantadas foram: desmama antecipada, everminacao estrategica das femeas de reposicao, identificacao e acompanhamento do desempenho das matrizes, monta controlada, utilizacao de touros do plantel da... |
| Tipo: Circular Técnica (INFOTECA-E) |
Palavras-chave: Bovino de corte; Bovine; Production; Management.; Criação; Manejo; Produção; Tecnologia.; Pantanal; Breeding; Technology.. |
| Ano: 2000 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/806084 |
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| ROSA, A. do N.; MELO, J. de. |
| O Pantanal Mato-Grossense encontra-se na bacia do Rio Paraguai, estendeu-se por cerca de 250 km na direcao leste-oeste e 450 km na direcao norte-sul, perfazendo uma area total de 140.000 km2. A planicie pantaneira apresenta 80 a 200 m de altitude, sendo circundada por um planalto, com 300 a 700 m, que contribui para a planicie com agua e sedimentos. O clima e quente e chuvoso no verao e ameno e seco no inverno, com temperaturas medias de 32oC e 21oC, respectivamente. A precipitacao pluviometrica anual esta entre 1000 e 1400 mm, concentrada entre os meses de dezembro a marco. Cerca de 92% da planicie pantaneira e constituida por solos hidromorficos, sendo a maioria (70%) de baixa fertilidade natural. Em todas as sub-regioes, a estrutura fundiaria... |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Bovine; Cow; Production.; Bovino; Produção; Touro.; Pantanal; Cattle.. |
| Ano: 1995 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/784396 |
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| Biase,Fernando Henrique; Meirelles,Flávio Vieira; Gunski,Ricardo; Vozzi,Pedro Alejandro; Bezerra,Luiz A.F.; Vila,Reginaldo A.; Rosa,Artur J.M.; Lôbo,Raysildo B.; Martelli,Lúcia. |
| We sampled 119 Nelore cattle (Bos indicus), 69 harboring B. indicus mtDNA plus 50 carrying Bos taurus mtDNA, to estimate the frequencies of putative mtDNA single nucleotide polymorphisms (SNPs) and investigate their association with Nelore weight and scrotal circumference estimated breeding values (EBVs). The PCR restriction fragment length polymorphism (PCR-RFLP) method was used to detect polymorphisms in the mitochondrial asparagine, cysteine, glycine, leucine and proline transporter RNA (tRNA) genes (tRNAasn, tRNAcys, tRNAgly, tRNAleu and tRNApro). The 50 cattle carrying B. taurus mtDNA were monomorphic for all the tRNA gene SNPs analyzed, suggesting that they are specific to mtDNA from B. indicus cattle. No tRNAcys or tRNAgly polymorphisms were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bovine; Mitochondria; MtDNA; SNP; Weight. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000600005 |
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| Ribeiro,M.G.; Siqueira,A.K.; Langoni,H.; Paes,A.C.; Victória,C.; Silva,A.V. Da; Listoni,F.J.P.; Souza,A.H.. |
| A concentração inibitória mínima-MIC em 30 estirpes de Pseudomonas aeruginosa isoladas de mastite bovina foi avaliada utilizando o E-test padrão e o método modificado, pela adição de Tris-EDTA e DMSO. Os métodos modificados apresentaram redução significativa da MIC das estirpes utilizando a gentamicina, a ciprofloxacina e a norfloxacina. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bovine; Mastitis; Pseudomonas aeruginosa; Minimal inhibitory concentration. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352004000500017 |
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| Registros recuperados: 190 | |
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