Animal Genetic Resistance
Mostrando 13-24 de 90 artigos, teses e dissertações.
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13. Application of molecular information in sustainable animal breeding
Livestock genomics is aimed at dissecting the genetic control of variation in economically important trait, such as disease resistance and product yield/quality. Unraveling the genetic control of such complex traits remains very challenging but farm animals are now well placed to bridge the gap between human biology and traditional model species. Livestock s
Revista Brasileira de Zootecnia. Publicado em: 2008-07
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14. Perfil de suscetibilidade e detecção de marcadores genéticos de resistência em Streptococcus Agalactiae isolados de amostras animais e humanas
Streptococcus agalactiae, also referred as group B streptococci (GBS) are commensals microorganisms adapted to asymptomatic colonization of the mammalians gut and genitourinary tract. Initially, this specie was recognized as a major etiologic agent for bovine mastitis but has becoming a leading cause of invasive infections in human neonates. The reasons behi
Publicado em: 2008
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15. Construction of auxotrophic marker in Mycobacterium bovis BCG, knockout strain for the DPPD and proteomic study of tuberculin / Construção de marcador auxotrófico em Mycobacterium bovis BCG, de uma cepa knockout para DPPD e estudo proteômico da tuberculina
Mycobacterium bovis BCG has the potential to be an effective live vector for multivalent vaccines. However, there are two problems regarding the utilization of recombinant BCG as vaccine. The first one is that most mycobacterial cloning vectors rely on antibiotic resistance gene as selectable marker, which is used for genetic transformation. The second one i
Publicado em: 2008
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16. Evaluation of the role of Stomoxys calcitrans (Linnaeus, 1758) as a vehicle for bovine mastitis causative Escherichia coli and other bacteria agents. / Avaliação do papel de Stomoxys calcitrans (Linnaeus, 1758) na veiculação de Escherichia coli causadora de mastite bovina e outros agentes bacterianos.
This study had the objective of evaluating the capacity of Stomoxys calcitrans fly to vehicular bacterial agents causing bovine mastitis. Just as evaluate the enterobacterian microbiota on the external surface, mouth parts and abdominal digestive tract of the stable fly. And also realize a survey of the bacterial microbiota of the cases of bovine mastitis on
Publicado em: 2008
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17. Bacteriocins from lactic acid bacteria: purification, properties and use as biopreservatives
Biopreservation systems in foods are of increasing interest for industry and consumers. Bacteriocinogenic lactic acid bacteria and/or their isolated bacteriocins are considered safe additives (GRAS), useful to control the frequent development of pathogens and spoiling microorganisms in foods and feed. The spreading of bacterial antibiotic resistance and the
Brazilian Archives of Biology and Technology. Publicado em: 2007-05
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18. Marcadores microssatélites no mhc de ovinos : estudos de associação e diversidade genética na raça Santa Inês
The objective of this study was to verify the existence of significant associations between alleles of the ovine MHC (OLA - ovine leucocyte antigen) with characteristics of performance, carcass and resistance to gastrointestinal parasites in purebred Santa Inês sheep and their crosses with Bergamasca, Texel and Ile de France sires from different localities.
Publicado em: 2007
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19. Artificial infestation of Boophilus microplus in beef cattle heifers of four genetic groups
Resistance of beef cattle heifers to the cattle tick Boophilus microplus was evaluated by artificial infestation of 66 beef cattle heifers of the following genetic groups: 16 Nelore (NE), 18 Canchim x Nelore (CN), 16 Angus x Nelore (AN) and 16 Simmental x Nelore (SN). The animals, with a mean age of 16.5 months, were maintained with no chemical tick control
Genetics and Molecular Biology. Publicado em: 2007
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20. Prevalence and genetic variability of vancomycin resistant enterococci isolated from poultry raised on monintensive production farms from Brazil / Prevalência e variabilidade genética de enterococos com resistência à vancomicina isolados de frangos caipiras de regiões do Distrito Federal
Pesquisa realizada como requisito para conclusão do curso de mestrado em Ciências Agrárias, Produção Animal Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, Brasília, DF. Enterococos resistentes à vancomicina (ERV) são patógenos emergentes em infecções hospitalares. Essas bactérias também colonizam animais saudáveis, q
Publicado em: 2007
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21. Níveis de fósforo disponível em rações para suínos de alto potencial genético para deposição de carne dos 15 aos 60 kg / Available phosphorus levels in diets for swine with high genetic potential for meat deposition from 15 to 60 kg
Two experiments were conducted to evaluate the available phosphorus (AP) levels in diets for swine of high genetic potential for meat deposition, from 15 to 60 kg. In the first experiment, 60 commercial hybrids pigs, were used being 30 castrate males and 30 females, with initial weight of 15.00 0.41 kg, distributed in a completely randomized experimental des
Publicado em: 2007
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22. Descovery and study of genes involved in immune response against gastrointestinal nematodes in cattle / Descoberta e estudo de genes envolvidos na resposta a endoparasitas gastrintestinais em bovinos
Este trabalho teve por objetivo identificar e estudar a expressão de genes envolvidos na resposta imune a endoparasitas gastrintestinais em bovinos. Contagem periódica de ovos por grama de fezes (OPG) e análises de coproculturas foram realizadas para identificar animais resistentes e susceptíveis a endoparasitas gastrintestinais. A contagem de OPG permit
Publicado em: 2007
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23. Reflexos cardiovasculares em camundongos com alteração na expressão do receptor da Angiotensina-(1-7), MAS
Several substances may modulate reflex cardiovascular activity, such reninangiotensin system peptides. The tecidual renin-angiotensin system is involved in regulation of cardiovascular structures and functions and, consequently in long-term blood pressure control, contributing in a significant way to maintenance and development of high peripheral resistance
Publicado em: 2007
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24. Mapeamento de QTLs para caracterísitcas de crescimento e de resistência no cromossomo 14 de bovinos F2 provenientes de um cruzamento Gir x Holandês.
Brazil possesses the largest commercial bovine herd in the world and cattle represents about 43% of agricultural PIB of Brazil. Crossing Bos taurus and Bos indicus species allows the combination of traits of production from the first specie and of rusticity from the second specie for the genetic improvement of the bovines. Due to the economical relevance of
Publicado em: 2006