European Cattle
Mostrando 1-12 de 31 artigos, teses e dissertações.
-
1. Linkage disequilibrium and past effective population size in native Tunisian cattle
Abstract To carry out effective genome-wide association studies, information about linkage disequilibrium (LD) is essential. Here, we used medium-density SNP chips to provide estimates of LD in native Tunisian cattle. The two measures of LD that were used, mean r2 and D’, decreased from 0.26 to 0.05 and from 0.73 to 0.40, respectively, when the distance be
Genet. Mol. Biol.. Publicado em: 18/02/2019
-
2. Histophilus somni-associated syndromes in sheep from Southern Brazil
Abstract Histophilus somni is a Gram-negative bacterium that is associated with a disease complex (termed histophilosis) that can produce several clinical syndromes predominantly in cattle, but also in sheep. Histophilosis is well described in North America, Canada, and in some European countries. In Brazil, histophilosis has been described in cattle with re
Braz. J. Microbiol.. Publicado em: 2018-09
-
3. Mitochondrial and Y chromosome genetic diversity in the Portuguese Lidia bovine breed
ABSTRACT A total of 80 samples were collected to analyze the mitochondrial DNA (mtDNA) and Y chromosome genetic diversity of two main Portuguese Lidia bovine populations and clarify their genetic relationships with Spanish Lidia lineages. A 521-bp D-loop fragment was sequenced in 40 animals belonging to four herds (three Brava dos Açores and one Casta Portu
R. Bras. Zootec.. Publicado em: 2017-02
-
4. Determinants of recognition of TRACES certification as valuable opportunity at the farm level in São Paulo, Brazil
Abstract TRACES (Trade Control and Expert System) is a veterinary health network created by the European Union to certify and monitor trade of animal products. This research aims to identify the factors that explain why few Brazilian farmers recognized adoption of the TRACES certification as a valuable opportunity. A farm is required to adopt traceability an
Prod.. Publicado em: 10/11/2015
-
5. Avaliação dos efeitos de polimorfismos e da origem parental do alelo na expressão de genes candidatos à característica maciez da carne em bovinos da raça Nelore
Tenderness is the main trait appreciated by consumers of bovine meat, however Nellore animals that comprise the largest part of Brazilian cattle, have lower tenderness when compared with European animals. In this way, it is essential understand the variability of genes associated to tenderness as well as their mechanisms of allelic expression, considering th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
-
6. Caracterização genética de bovinos por meio de estudos de cromossomo Y e do DNA mitocondrial.
ABSTRACT: Domestic cattle breeds are classified in two subspecies: Bos taurus taurus, which have an european origin and Bos taurus indicus, the zebuines, originated in India. The main phenotypic difference between them is the presence of the hump, observed in the zebuines and absent in taurines. In addition, the sexual Y chromosome has been considered as a m
Planaltina. Publicado em: 2011
-
7. Reduced genetic variability within coding and non-coding regions of the echinococcus multilocularis genome
Echinococcus multilocularis, a vulpine intestinal tapeworm, is the causative agent of alveolar echinococosis in humans, one of the most severe and lethal parasitic infections in man. To date, there is very little knowledge about the genetical polymorphism of this parasite. To assess sequence polymorphism, we analysed a sample of 33 E. multilocularis isolates
Publicado em: 2011
-
8. Integração entre os mercados de boi para o abate na Argentina e no Brasil / Market integration between the live cattle prices in Argentina and in Brazil
The main purpose of this study was to analyze the relationship between live cattle prices in Brazil and in Argentina so that both companies and government could have more accurate measures on the effects of Argentinas evolution of production and internal/external trade on Brazilian market. In order to achieve this goal a Vector Autoregression with Error Corr
Publicado em: 2010
-
9. Effects of habitat and landscape characteristics on medium and large mammal species richness and composition in northern Uruguay
The increasing world population and demand for food and other products has accelerated the conversion of natural habitats into agricultural lands, plantations and urban areas. Changes in habitat and landscape characteristics due to land-use change can have a significant effect on species presence, abundance, and distribution. Multi-scale approaches have been
Zoologia (Curitiba). Publicado em: 2010
-
10. Memória social e ecologia histórica: a agricultura de coivara das populações quilombolas do vale do Ribeira e sua relação com a formação da mata atlântica local / Social memory and historical ecology:slash and burn agriculture in the formation of an Atlantic rainforest area inhabited by quilombola communities, Ribeira Valley, Brazil
The Atlantic Rainforest is one of the worlds most diverse and threatened biomes. The majority of its remnants are located at the Ribeira Valley (SP) where several of the States quilombola populations remain. The Valleys quilombos originated from a population of freed, abandoned or refugee slaves brought to the region in the beginning of the European coloniza
Publicado em: 2010
-
11. Behavioral patterns of Angus, Caracu and Nelore beef cattle under grazing conditions with availability of shade and water for immersion / Aspectos comportamentais de bovinos das raças Angus, Caracu e Nelore a pasto frente à disponibilidade de recursos de sombra e água para imersão
Cattle under grazing conditions in tropical areas seek for shade as a thermal comfort resource often during the hottest periods of the day. The objective of this study was to evaluate and understand how cattle of different origins (Caracu - adapted taurus, Nellore - zebu and Red Angus - european taurus) use the thermal comfort resources, quantifying the freq
Publicado em: 2008
-
12. Norms of animal production in intensive rearing : scenario for national legislation on animal welfare / Normas de produção de animais submetidos a sistema intensivo : cenario da legislação nacional sobre bem-estar animal
Brazil is the producing greater of meat of the world and has an important exterior market. Face to the new international demands of animal well-being, there is the need to update the Brazilian legislation, that dates of years 30? and it does not reflect the actual animal Brazilian production. Regarding the conditions of the Brazilian agribusiness growth and
Publicado em: 2008