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Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. The economic impact of infection with Eimeria spp. in broiler farms from Romania
ABSTRACT A survey was conducted on chicken broiler farms from Romania in August-November 2010 to evaluate economic losses due to coccidiosis. Data were collected from six broiler farms of different capacity regarding chemoprophylaxis program, weight gain, feed conversion, and mortality, for two previous flocks in two houses of each farm, and finally we evalu
R. Bras. Zootec.. Publicado em: 2016-05
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2. Development of a cost calculation model and cost index for sheep production
ABSTRACT The objective of this study was to develop a model for calculation and analysis of production costs of lamb and, from that, to elaborate a production cost index. Panel meetings were held in five regions of the state of São Paulo, Brazil, to define technical features of representative properties of lamb production, taken as a basis for the preparati
R. Bras. Zootec.. Publicado em: 2015-12
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3. Factors that impact the financial performance of broiler production in southern states of Paraná, Brazil
This study aimed at identifying the factors that affect the financial performance of broiler chicken production in Southwest of Paraná state in Brazil, as well as to study the relationship of these factors with the social-economic situation of poultry farmers. Data were obtained from a questionnaire applied to broiler chicken farmers between February and Ma
Rev. Bras. Cienc. Avic.. Publicado em: 2014-03
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4. DISTRIBUIÇÃO GEOGRÁFICA, HISTÓRIA NATURAL E CONSERVAÇÃO DA ARARAJUBA (Guarouba guarouba PSITTACIDAE).
A ararajuba (Guarouba guarouba) é uma espécie de psitacídeo endêmica da Amazônia brasileira e ameaçada de extinção. Poucos estudos têm sido feitos com essa espécie na natureza, principalmente nos últimos anos. Este estudo visou descrever e analisar a distribuição geográfica da ararajuba e levantar informações sobre sua biologia na região do
Publicado em: 2008
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5. Effect of bird density on the decision to join a group in the Sicalis flaveola pelzeni (Passeriformes, Emberizidae)
A change in bird density within a captive flock of Sicalis flaveola pelzeni (Sclater, 1872) affected the decision to join a group. Ruling out inter-individual differences and maintaining constant the size of a food patch, birds were found to fly more often to the food source and spend a longer time in its environs when kept in greater groups.
Iheringia. Série Zoologia. Publicado em: 31/03/2002
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6. Incidence of Salmonella Contamination in Broiler Chickens in Saskatchewan
The incidence of Salmonella contamination in ten Saskatchewan broiler flocks varying in size from 6 200 to 14 000 was investigated from February, 1977 to April, 1979. Prior to the initial chick placement, brooding equipment, feed, water and fresh litter samples were found to be free of Salmonellae. Samples obtained from the clean and disinfected processing p
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7. Longitudinal Study of Campylobacter jejuni Bacteriophages and Their Hosts from Broiler Chickens
A longitudinal study of bacteriophages and their hosts was carried out at a broiler house that had been identified as having a population of Campylobacter-specific bacteriophages. Cloacal and excreta samples were collected from three successive broiler flocks reared in the same barn. Campylobacter jejuni was isolated from each flock, whereas bacteriophages c
American Society for Microbiology.
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8. Persistence of neutral polymorphisms in Lake Victoria cichlid fish
Phylogenetic trees for groups of closely related species often have different topologies, depending on the genes used. One explanation for the discordant topologies is the persistence of polymorphisms through the speciation phase, followed by differential fixation of alleles in the resulting species. The existence of transspecies polymorphisms has been docum
The National Academy of Sciences.
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9. Predicting infection risk of airborne foot-and-mouth disease
Foot-and-mouth disease is a highly contagious disease of cloven-hoofed animals, the control and eradication of which is of significant worldwide socio-economic importance. The virus may spread by direct contact between animals or via fomites as well as through airborne transmission, with the latter being the most difficult to control. Here, we consider the r
The Royal Society.
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10. Epizootiological survey of parainfluenza-3, reovirus-3, respiratory syncytial and infectious bovine rhinotracheitis viral antibodies in sheep and goat flocks in Quebec.
A serological survey was conducted in an attempt to detect antibodies against bovine respiratory viruses in sheep and goats from seven geographical areas of Quebec. Sera from 10% of the animals in 182 sheep flocks and 40 goat flocks were collected and specific antibodies against parainfluenza-3, reovirus type 3, respiratory syncytial and infectious bovine rh
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11. Seroepidemiological survey of maedi-visna virus infection in sheep and goat flocks in Quebec.
Maedi-visna, a chronic viral disease of adult sheep characterized by progressive dyspnoea or neurological manifestations, was first recognized and described clinically in Canada in 1970. Seroepidemiological study was conducted in sheep and goats in various areas of Quebec. Sera of 10% of the animals of selected flocks were collected and specific antibodies a
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12. Epidemiological relatedness and clonal types of natural populations of Escherichia coli strains producing Shiga toxins in separate populations of cattle and sheep.
Two separate animal populations consisting of a herd of cattle (19 animals) and a flock of sheep (25 animals) were investigated for strains of Escherichia coli producing Shiga toxins (STEC) over a time period of 6 months. Thirty-three STEC were isolated from 63.2% of cattle and grouped into 11 serotypes and eight electrophoretic types (ETs) by multilocus enz