10 research outputs found
Effect of pregnancy and correlation of weight and heart rate with electrocardiographic parameters in the American Miniature Horse
CaracterÃsticas eletrocardiográficas em eqüinos clinicamente normais da raça Puro Sangue Inglês
Hemispheric asymmetry in ocean change and the productivity of ecosystem sentinels
Climate change and other human activities are causing profound effects on marine ecosystem productivity. We show that the breeding success of seabirds is tracking hemispheric differences in ocean warming and human impacts, with the strongest effects on fish-eating, surface-foraging species in the north. Hemispheric asymmetry suggests the need for ocean management at hemispheric scales. For the north, tactical, climate-based recovery plans for forage fish resources are needed to recover seabird breeding productivity. In the south, lower-magnitude change in seabird productivity presents opportunities for strategic management approaches such as large marine protected areas to sustain food webs and maintain predator productivity. Global monitoring of seabird productivity enables the detection of ecosystem change in remote regions and contributes to our understanding of marine climate impacts on ecosystems
Hemispheric asymmetry in ocean change and the productivity of ecosystem sentinels
Climate change and other human activities are causing profound effects on marine ecosystem productivity. We show that the breeding success of seabirds is tracking hemispheric differences in ocean warming and human impacts, with the strongest effects on fish-eating, surface-foraging species in the north. Hemispheric asymmetry suggests the need for ocean management at hemispheric scales. For the north, tactical, climate-based recovery plans for forage fish resources are needed to recover seabird breeding productivity. In the south, lower-magnitude change in seabird productivity presents opportunities for strategic management approaches such as large marine protected areas to sustain food webs and maintain predator productivity. Global monitoring of seabird productivity enables the detection of ecosystem change in remote regions and contributes to our understanding of marine climate impacts on ecosystems
Electrocardiographic parameters of the American Miniature Horse: influence of age and sex
The pharmacokinetics and pharmacodynamics of procainamide in horses after intravenous administration
Dominant mutation in mouse cells associated with resistance to Hoechst 33258 dye, but sensitivity to ultraviolet light and DNA base-damaging compounds
Estudo eletrocardiográfico de equinos de salto sadios
Avaliou-se o eletrocardiograma de 100 equinos sadios praticantes de hipismo clássico modalidade salto, com idades entre 4 e 19 anos, sendo 61 machos e 39 fêmeas, com média de 516,3 kg. Observou-se frequência cardÃaca média de 40,20 ±13,33 bpm, sendo o ritmo cardÃaco mais freqüente o sinusal (56%). As alterações de ritmo cardÃaco estiveram presentes em 38% dos animais estudados, sendo a mais presente o marcapasso migratório (22%), seguido de bloqueio atrioventricular de 2º grau (4%), bloqueio atrioventricular de 1º grau (3%), contração ventricular prematura (2%), contração atrial prematura (1%). Não se observou correlação entre as variáveis estudadas (freqüência cardÃaca, ritmo e arritmias) e a capacidade atlética, a idade e o sexo. O escore cardÃaco após analise estatÃstica não diferiu entre os grupos quanto ao desempenho atlético, a faixa etária e o sexo. O escore cardÃaco, nesta amostra, não se mostrou um parâmetro confiável para se predizer o futuro atlético ou o nÃvel de treinamento do eqüino