Teses em Ciência Animal (Doutorado) - PPGCAN/Castanhal
URI Permanente para esta coleçãohttps://repositorio.ufpa.br/handle/2011/4665
O Doutorado em Ciência Animal teve início em 2008, com início da primeira turma em 2009 junto à CAPES/MEC e funciona no Programa de Pós-Graduação em Ciência Animal (PPGCAN) do Campus Universitário de Castanhal (CCAST) da Universidade Federal do Pará (UFPA), Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) e Universidade Federal Rural da Amazônia (UFRA).
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Item Acesso aberto (Open Access) Fauna microparasitária de Brachyplatystoma rousseauxii e Mugil curema desembarcados na Amazônia oriental(Universidade Federal do Pará, 2013-11-29) DIAS, Lilian de Nazaré Santos; MATOS, Edilson Rodrigues; http://lattes.cnpq.br/7895814591867510; PAIVA, Rosildo Santos; http://lattes.cnpq.br/0510818763187669; FREITAS, José de Arimatéa; http://lattes.cnpq.br/2382745365421156The gilthead bream Brachyplatystoma rousseauxii and white mullet Mugil curema are species of fish consumption and considerable commercial value found in estuarine cost of Pará The microparasites phyla Apicomplexa, Microspora and Myxozoa are organisms that can be found parasitizing vertebrates and invertebrates, including the fish, some pathogenic potential and even zoonotic and economic impact. To discover the fauna microparasites affecting fish , 62 specimens of B. rousseauxii and 58 M. curema estuarna captured on the coast of the city of Vigia de Nazare and Mosqueiro District, in Belem, Para state were examined as methods and techniques for morphological analysis (microscopy light), ultrastructural (transmission electron microscopy, TEM) and molecular biology (phylogenetic analysis). It was observed that there are three phyla (three in B. rousseauxii and two in M. curema) captured hosts in the two locations , plus the largest parasitic index was determined in specimens of both captured on the coast of the estuarine Vigia de Nazare , higher incidence of co microparasites phyla Apicomplexa and Myxozoa, beyond multiparasitism in B. rousseauxii Morphological analysis revealed the presence of Calyptospora sp. (Apicomplexa), Ellipsomyxa sp., Henneguya sp., Myxobolus sp. and Meglishcha sp. (Myxozoa) and Kabatana sp. (Microspora) in B. rousseauxii and Ellipsomyxa sp., Myxobolus sp. and Microspora phylum microparasito in M. curema. The data analysis of morphological and ultrastructural Myxospora found in B. rousseauxii and M. curema are suggestive of new species microparasites these two hosts. Phylogenetic analysis of the data did not provide results that allow the classification of Kabatana sp. (Microspora) and Henneguya sp. (Myxozoa) found parasitizing B. rousseauxii microparasites as new species in this host due to low bootstrap value, but by analyzing the distance p was possible to suggest that these are new species. Studies about microparasites in Amazonian fish are needed for the knowledge of the occurrences, characterization d new species, the pathogenic potential hosts and possible risk to the consumer.Item Acesso aberto (Open Access) Respostas termorregulatórias e comportamentais de fêmeas bubalinas criadas a pasto, em condições de ambiente do trópico úmido(Universidade Federal do Pará, 2015-09-11) BRCKO, Carolina Carvalho; LOURENÇO JÚNIOR, José de Brito; http://lattes.cnpq.br/2919433679918544Testing the thermoregulatory and behavior responses in buffalo in the eastern Amazon, three experiments were conducted at Embrapa Amazônia Oriental (01 ° .26'.03 "S and 48 ° .26'.03" W) in the period July 2013 to June 2014, with 24 buffaloes crossbred Murrah / Mediterranean. That were in paddocks with Brachiaria brizantha (cv. Marandu) in a rotational system with drinking water and mineral salt at will. Experiment 1 aimed to evaluate the effects of climate and the inclusion of four levels (0, 0.25, 0.5 and 1% of PV) of palm kernel cake in thermoregulation of buffaloes. Air temperature data were recorded (AT), relative humidity (RH), dew point temperature, wet bulb temperature, black globe temperature (BGT), rectal temperature (RT), temperature of the body surface (TBS), respiratory rate (RR). Daily, animals received food into individual troughs and the diet was adjusted by reweighing of animals every 28 days. It was concluded that there is no effect of palm kernel cake on thermoregulation of buffaloes. The second experiment aimed to study the exchange capacity and daily heat preservation buffaloes and lasted six days. Physiological (RT, RR and TBS by infrared thermography) and climate (TA, UR, TG) at 6:00 am, 9:00 am, 12:00, 15:00, 18:00 and 21:00. Although exposed to adverse weather conditions, the buffalo are able to return to homeostasis in the evening, indicating that the species has great adaptive capacity. Finally, the experiment 3 aimed to study the inclusion of palm kernel cake, at different levels (0, 0.25, 0.5, 1% of PV) is able to change the behavior of buffalo raised on pasture. The experiment was conducted in two seasons (wettest and less rain). Climate variables are as described in experiment 1. The behavioral analysis (grazing, ruminating, leisure and other activities) was carried out between 6:00 a.m. and 18:00 for three consecutive days in each collection campaign. 24 buffaloes were used, six for each treatment. The test diet does not influence the buffalo behavior. Despite suffering physiological and behavioral changes due to the effect of environmental variables, especially in the period with higher temperatures, buffaloes showed its ability to return to homeostasis as the temperature became milder, indicating great adaptive capacity.