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) Emulsificante em dietas para frangos de corte com diferentes fontes lipídicas(Universidade Federal do Pará, 2015-11-04) TAVARES, Fernando Barbosa; LIMA, Kedson Raul de Souza; http://lattes.cnpq.br/7607189403583641; FATURI, Cristian; http://lattes.cnpq.br/8389692203753236This study aimed to evaluate the effects of diets containing different lipid source and the inclusion of an emulsifier (soy lecithin and polyethylene glycol ricinoleate) for broilers. Article I aimed to evaluate the influence of different fat sources in the metabolization of nutrients and serum broiler profiles, with the addition of emulsifier. 336 chicks were used in a 4x2 factorial arrangement, with eight replications and four lipid sources (soybean oil, Poultry Oil, Fish Oil and Tallow Beef) and 2 types of inclusions (not including the product and 5 g / kg emulsifier). Proceeded metabolic tests by the total collection method. The data were subjected to analysis of variance in SAS and the means were compared by Tukey test, the significance of P <0.05. No difference was observed for feed intake, metabolization coefficient of dry matter and crude protein. The coefficient of metabolizable ether extract (CMEE) was lower in the diets of fat (P <0.001). The lipid source modifies the metabolization of diets. The emulsifier, the tested values, does not modify the metabolization of ingredients and does not modify the HDL serum parameters, LDL, Cholesterol and Triacilglerol. For Article II aimed to test how the addition of emulsifier can alter the performance parameters, metabolization, carcass composition and economic viability for broiler diets with poultry oil and beef tallow. Diets with poultry oil (OA) or tallow (SB), in treatments to control (CON), other diets with reduction of 0.83 MJ / kg of metabolizable energy (RED) and diets with reduced MS and inclusion of 0, 1% inclusion of emulsifier (Emul). Diets with poultry oil performed better on average weight and feed intake, resulting in a reduction in the amount of crude protein in the carcass of 58.3% to 56.1% in diets with SB and OA respectively. The results indicated that the emulsifier reduced metabolization of ether extract, but increased the EMA in the diet with beef tallow in 0.93 MJ / kg. The emulsifier added in the form proposed only increased the cost of diet without significant result on performance, metabolism and body composition of broilers.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.