Birds Behavior
Mostrando 1-12 de 131 artigos, teses e dissertações.
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1. DEVELOPMENT OF SOFTWARE FOR ANALYSIS OF BEHAVIOR AND WELFARE OF BROILERS
ABSTRACT The objective of this study was to develop a software based on image processing and computer vision techniques for monitoring the feeding/collective behavior of broilers (Cobb) and validate it based on the results obtained from the visual analysis of an expert. The visual analysis was performed based on the observation and quantification of behavior
Eng. Agríc.. Publicado em: 2020-12
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2. BEHAVIOR OF BROILERS UNDER THE INFLUENCE OF LED LIGHTING AND MICROMETEOROLOGICAL ELEMENTS
ABSTRACT The objective of this research was to analyze the differences between the food behaviors observed under the factors of production environment, sex and lighting system, using stochastic tools of multivariate analysis. As for the thermal characteristics of the environment, air temperature (T, °C), enthalpy (H, kJ kg-1), and black globe temperature an
Eng. Agríc.. Publicado em: 2020-06
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3. Digestible lysine requirement for European laying quail
ABSTRACT. The experiment was carried out to evaluate the productive performance of European quails (Coturnix coturnix) in the production phase, fed with diets containing different levels of digestible lysine. A total of 175 female quails, aged 65 days, were randomly distributed in a completely randomized design with five treatments and five replicates per tr
Acta Sci., Anim. Sci.. Publicado em: 24/10/2019
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4. Performance and welfare of different genetic groups of laying hen
ABSTRACT. The objective was to evaluate the performance, egg quality, thermoregulation, body morphology and behavior of different categories of laying poultry. Two treatments with two genetic groups were used, 50 birds of the Hisex Brown strain and 50 birds of the Black Avifran chicken breed with 55 weeks, distributed in a completely randomized design with 1
Acta Sci., Anim. Sci.. Publicado em: 25/02/2019
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5. Additional information on reproductive behavior of the Red-breasted Toucan, Ramphastos dicolorus (Aves: Piciformes: Ramphastidae)
Resumo: Ramphastidae compreende uma Família de aves que nidificam em cavidades, são endêmicas da região Neotropical, mas possuem os aspectos relacionados à sua biologia reprodutiva ainda pouco conhecidos. No presente estudo, nós fornecemos uma revisão detalhada da literatura acerca de medidas de ninhos, características das cavidades, cuidado parental
Biota Neotrop.. Publicado em: 24/01/2019
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6. Foraging behavior of Brazilian cormorant, Nannopterum brasilianus (Suliformes: Phalacrocoracidae)
ABSTRACT Although the concept of optimal foraging has been extensively discussed, foraging efficiency is difficult to assess in vertebrates. In this study, we determined the foraging efficiency of the Brazilian cormorant, Nannopterum brasilianus Gmelin, 1789, by the direct, ad libitum observation of a group of four to thirteen individuals in an artificial po
Zoologia (Curitiba). Publicado em: 16/07/2018
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7. Reproductive Biology of Varronia curassavica Jacq. (Boraginaceae)
ABSTRACT Varronia curassavica, a subshrubby medicinal species associated with restinga in the Atlantic Forest, has been exploited by local people and the pharmaceutical industry. Indeed, restingas have experienced a continuous process of degradation, and thus, with species and ecosystem both at risk, efforts to support conservation actions are required. The
An. Acad. Bras. Ciênc.. Publicado em: 01/02/2018
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8. Reproductive aspects of the Purple-throated Euphonia, Euphonia chlorotica (Aves: Fringillidae) in southeastern Brazil, and first record of the species nesting inside a vespiary
ABSTRACT Despite the fact that E. chlorotica (Linnaeus, 1766) is common and widely distributed in South America, the reproductive aspects of the species are poorly documented. Here we present data on 18 active nests found from August to February, between 2007 and 2012. Nests were globular with a lateral entrance, and measured 97.9 ± 14.4 mm in outside heigh
Zoologia (Curitiba). Publicado em: 23/10/2017
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9. Effect of chamomile extract on the welfare of laying Japanese quail
ABSTRACT The objective of this study was to evaluate the effect of chamomile extract on Japanese quail on their performance, animal behavior, tonic immobility, body injuries, and surface temperature. The trial was conducted using 108 quail distributed in a completely randomized experimental design, with three treatments (0, 2.5, and 5.0 g chamomile/kg of fee
R. Bras. Zootec.. Publicado em: 2017-09
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10. Feeding behavior by hummingbirds (Aves: Trochilidae) in artificial food patches in an Atlantic Forest remnant in southeastern Brazil
ABSTRACT During flight, hummingbirds achieve the maximum aerobic metabolism rates within vertebrates. To meet such demands, these birds have to take in as much energy as possible, using strategies such as selecting the best food resources and adopting behaviors that allow the greatest energy gains. We tested whether hummingbirds choose sources that have high
Zoologia (Curitiba). Publicado em: 12/06/2017
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11. Effect of Litter on Development and Severity of Foot-Pad Dermatitis and Behavior of Broiler Chickens
ABSTRACT This study was conducted to evaluate the impact of litter type and litter treatment with enzymatic-bacterial production incidence and severity of footpad dermatitis and consequently on behavior of broiler chickens. A total of 1,200 one day-old Ross 308 broilers were randomly allocated to 4 treatments with 4 replicates in 2 x 2 factorial design. The
Rev. Bras. Cienc. Avic.. Publicado em: 2017-06
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12. EFFECT OF THERMAL STIMULATION IN EMBRYOS FROM COBB®GENETIC STRAIN UNDER COMMERCIAL SCALE
ABSTRACT Studies aimed at producing stronger birds and with better growth performance are being developed involving artificial incubation. To that extent, thermal stimulation by the heat of 1.39 ºC and 1ºC above the standard, and by cold of 36 ºC fixed, were applied in the last week of the embryonic development (day 14 to day 18) to Cobb® strain birds of
Eng. Agríc.. Publicado em: 2017-04