Animal Behaviour
Mostrando 37-48 de 122 artigos, teses e dissertações.
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37. Avaliação da toxicidade da Ipomoea carnea em caprinos durante o período perinatal: estudos de neuroteratologia / Evaluation of the toxicity of Ipomoea carnea in goats during postnatal period
Ipomoea carnea, a shrub plant, is a toxic plant largely distributed throughout Brazil and others topical countries. This plant possess swainsonine, an indolizidinic alkaloid as the most important active toxic principle, which promotes cellular accumulation of not metabolized oligossacarides, due to inhibition of acid or lisossomal αmanosidasis enzyme,
Publicado em: 2009
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38. Distribuição e disponibilidade de recursos florais e estratégias de forrageamento na interação entre beija-flores e Palicourea rígida (Rubiaceae)
Some pollination mechanisms represent mutualistics interactions, in which the plants offer nectar and pollen and the pollinators carry the pollen grains. The hummingbirds are the more specialized pollinators among the birds, and their high energetic cost to fly, force them to develop feeding strategies to obtain the highest energetic gains with the lowest co
Publicado em: 2009
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39. Rastreamento de animais por imagens de video em experimentos de laboratorio / Animal tracking by video images in laboratory experiments
The automatic tracking of animals allows a quicker and more consistent analysis of behaviour than the usual manual method for registering experimental parameters in biology. The automatic register of parameters is performed by a system that analyses a sequence of images and computes a number of descriptors that characterizes the behaviour of each target. Our
Publicado em: 2008
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40. Holstein milking cows behaviour and thermoregulation under fun and mist housing resources in free-stall / Comportamento e termorregulação de vacas Holandesas lactantes frente a recursos de ventilação e nebulização em estabulação livre
Este estudo teve como objetivo avaliar a influência de recursos de climatização, ventilação e nebulização sobre a fisiologia e o comportamento de vacas Holandesas alojadas em free-stall, durante o verão do sudeste brasileiro. Foram utilizadas 20 vacas Holandesas lactantes em duas fases experimentais. No experimento I, foram avaliados os efeitos do tr
Publicado em: 2008
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41. Hierarquia de dominância durante a obtenção de Alimento em cebus apella e cebus libidinosus em Cativeiro
The analysis of the index of hierarchy and structural models of the formation of groups allowed to establish the hierarchical position of members of two groups of the genus Cebus. By the analyses of the hierarchical positions and the application of tests to obtain a food resource (TORA), we know the difference between these groups and groups in the wild. The
Publicado em: 2008
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42. Temporal organization in Pyrrhura lepida lepida / Organização temporal em Pyrrhura lepida lepida
The behaviours of many animals are organized in the rhythmic pattern as mechanism of the adaptation in a cyclical environment. The goal of this research was describe the daily distribution of the behaviors in Pyrrhura lepida lepida, to characterize your temporal organization. It was observed, individually, the behaviour of four birds that are living at the Z
Publicado em: 2008
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43. Perfil hormonal anual de machos e fêmeas adultos de saguis (callithrix jacchus)
Muitas variáveis biológicas e comportamentais dos animais se expressam sob a forma de ritmos biológicos, determinadas pelo Sistema de Temporização Circadiana, que as sincronizam com o ambiente a partir de estímulos externos, com a luz. Uma delas é o perfil de secreção da maioria dos hormônios circulantes regulado pelo eixo Hipotálamo-Hipofisário,
Publicado em: 2008
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44. Reologia de Biodiesel de origens diversas e das misturas Diesel/Biodiesel
Cost and depletion of petroleum derived fuels are increasing, thus alternative fuels are quite required. Biodiesel (B100), which is comprised of fatty acid methyl (or ethyl) esters (FAMEs/FAEEs) derived from vegetable oils, animal fats or waste oils mainly through transesterification, is an alternative source of energy. It is renewable, available locally, bi
Publicado em: 2008
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45. Comportamento ingestivo diurno de vacas primíparas em pastagem nativa dominada por capim-annoni-2 em função de suplementação protéica e mineral / Diurnal ingestive behaviour of cows grazing on natural grasslands invaded by eragrostis plana ness as affected by protein and mineral supplements
Com o objetivo de estudar a interface planta-animal em pastagem nativa dominada por capim-annoni-2 (Eragrostis plana Ness), avaliou-se a influência da suplementação protéica e mineral sobre o comportamento ingestivo de novilhas em gestação, submetidas aos tratamentos: a) sal comum; b) sal mineral; c) sal proteinado; d) sal reprodução e proteinado. Te
Publicado em: 2008
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46. A Zona Incerta no sagüi (Callithrix jacchus): Análise Citoarquitetônica, Neuroquímica e Projeção Retiniana
The retinal projections in mammals usually reach, classically, three major functional systems: the primary visual system, the accessory optic system, and the circadian timing system. But the retinal projections also reach areas classically considered non-visual, one of which groups the neurons of the zona incerta (ZI), target this study. The primary visual s
Publicado em: 2008
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47. The integration of GPS, vegetation mapping and GIS in ecological and behavioural studies
Global Positioning System (GPS) satellite navigation receivers are increasingly being used in ecological and behavioural studies to track the movements of animals in relation to the environments in which they live and forage. Concurrent recording of the animal's foraging behaviour (e.g. from jaw movement recording) allows foraging locations to be determined.
Revista Brasileira de Zootecnia. Publicado em: 2007-07
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48. Animal perfomance and structural sward on Brachiaria brizantha cvs. Marandu and Xaraés pastures submitted under grazing intensities / Desempenho animal e estrutura do dossel de Brachiaria brizantha cvs. Marandu e Xaraés submetidos a intensidades de pastejo
The objectives were to evaluate the forage yield, the structural characteristics, the herbage intake, the grazing behaviour and beef cattle performance in the palisadegrass cvs. marandu and xaraés pastures submitted to three grazing intensities. The experiment was carried out at Embrapa Gado de Corte. The experimental period was from October 2005 to June 20
Publicado em: 2007