Artigos Científicos - FAMEVE/CCAST

URI Permanente para esta coleçãohttps://repositorio.ufpa.br/handle/2011/2571

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Conforto ambiental de bezerros bubalinos (Bubalus bubalis Linnaeus, 1758) em sistemas silvipastoris na Amazônia Oriental
(Instituto Nacional de Pesquisas da Amazônia, 2010-12) MORAES JUNIOR, Raimundo José; GARCIA, Alexandre Rossetto; SANTOS, Núbia de Fátima Alves dos; NAHÚM, Benjamim de Souza; LOURENÇO JÚNIOR, José de Brito; ARAÚJO, Cláudio Vieira de; COSTA, Norton Amador da
This aim of the study was evaluating effects of two different silvopastoral systems on environmental comfort and changes in physiological parameters of buffalo calves bred in the Eastern Amazon. The experiment was conducted at Embrapa Amazônia Oriental, Belém-PA, (Afi climate type) in two periods of the year: Period 1 (April to Sep/2007) and Period 2 (Oct/2007 to March/2008). Eleven calves were included in the Silvopastoral System 1 (SSP1), with a useful shaded pasture area of 18 to 21%; and eight calves were included in the Silvopastoral System 2 (SSP2), without shading, but with a lake for swimming. Physiological status of animals bred in the two SSP's were measured (rectal temperature-RT; respiratory frequency-RF and skin temperature-ST). The Temperature and Humidity Index (THI) and Benezra´s Animal Comfort Index (ACI) were calculated, in two phases of the year, and were compared by the Tukey test (P < 0.05). THI ranged from 73.5 ± 1.3 to 82.2 ± 0.8. RT was 38.3 ± 0.26 to 39.3 ± 0.38 °C, but within the normal range for buffalo. RF ranged from 32.2 ± 9.2 to 56.5 ± 19.0 mov min-1, above the levels considered normal, and ST ranged from 23.6 ± 8.3 and 31.7 ± 5.4 °C. In both periods of the year and the two SSP's, ACIs were considered higher than ideal, ranging from 2.46 ± 0.33 to 3.31 ± 0.62 (SSP1) and 2.42 ± 0.30 to 3.45 ± 0.66 (SSP2).
Acesso aberto (Open Access)
Histological study of capuchin monkey (Cebus apella) ovarian follicles
(Instituto Nacional de Pesquisas da Amazônia, 2004-09) DOMINGUES, Sheyla Farhayldes Souza; DINIZ, Luiz Viana; COSTA, Sônia Helena Furtado; OHASHI, Otávio Mitio; RONDINA, Davide; SILVA, Lúcia Daniel Machado da
The present study aimed to obtain quanti-qualitative data about the follicular ovarian population in Cebus apella females. Seven ovaries were obtained from 4 C. apella adult females. The ovaries were subjected to light microscopy. The number of preantral and antral follicles for each ovary was estimated using the Fractionator method. The preantral follicles were classified into primordial, transitional, primary and secondary follicles. Antral follicles were those that presented an antral cavity. All counted follicles were classified as normal or degenerated. The diameter of the follicles, oocytes and their nuclei were determined to accompany the follicular development. All results were represented as mean ± SE. The number of preantral follicles was 56,938 ± 21,888 and 49,133 ± 26,896 for the right and left ovaries, respectively. The percentage of normal follicles was 80 ± 4.95%. The follicular diameter ranged from 22 ± 0.5 µm to 61.2 ± 4.0 µm. Regarding the antral follicles, the number of normal and degenerate follicles per ovary were 60.0 ± 19.0 and 3 ± 1.8 follicles, respectively. The antral follicular diameter was 514.4 + 56.6 µm. In conclusion, the information obtained in this study can be used as a parameter for subsequent in vivo or in vitro studies about folliculogenesis in non-human neotropical primates of the C. apella species.
Acesso aberto (Open Access)
Intervalos de referência sanguíneos e a influência da idade e sexo sobre parâmetros hematológicos e bioquímicos de ovinos da raça Santa Inês criados na Amazônia Oriental
(Instituto Nacional de Pesquisas da Amazônia, 2015-09) LIMA, Misael Brito de; MONTEIRO, Maria Vivina Barros; JORGE, Ediene Moura; CAMPELLO, Claudio Cabral; RODRIGUES, Luiz Fernando Souza; VIANA, Rinaldo Batista; MONTEIRO, Frederico Ozanan Barros; COSTA, Cícero Temístocles Coutinho
Blood count and biochemical tests are used to diagnose diseases in domestic animals. These tests can be influenced by age, gender, nutrition, breed, species and environmental conditions. Thus, data from one region should not be extrapolated to animals raised in other regions. The objective of this study was to determine the hematological and biochemical values of different ages and genders of Santa Inês sheep, raised in the eastern Amazon. There were examined 91 sheep that were assigned to three groups: G1 (three to six months old, n = 31); G2 (seven to 24 months old, n = 30) and G3 (above 24 months old, n = 30). The blood cell count, white blood count and biochemical determinations were made with an automatic counter and a semi-automatic analyzer, respectively. Mean values were compared using the Tukey test. The number of erythrocytes, the red blood indices, the thrombogram, eosinophils, total protein, urea and creatinine concentrations were influenced by the age of the animals. The erythrocyte coefficient of variation and the creatinine concentration were influenced by gender, and were greater in males. The neutrophil:lymphocyte (N:L) ratio was greater than one for all age groups. This study led to the determination of reference values for sheep raised in the Eastern Amazon and demonstrated that when interpreting hematological and biochemical tests of sheep, age and gender must be considered.
Acesso aberto (Open Access)
Perfil hematológico de búfalas da raça Murrah, criadas ao sol e à sombra, em clima tropical da Amazônia Oriental
(Instituto Nacional de Pesquisas da Amazônia, 2011) SILVA, Jamile Andréa Rodrigues da; ARAÚJO, Airton Alencar; LOURENÇO JÚNIOR, José de Brito; VIANA, Rinaldo Batista; SANTOS, Núbia de Fátima Alves; GARCIA, Alexandre Rossetto
We evaluated the hematologic responses of 20 female buffaloes raised under full sun (group NS) and shade (group SG) at Belem, Para, Brazil. The animals in the SG group (n = 10) were maintained in paddocks under a silvopastoral system with Racosperma mangium, and the ones in the NS (n = 10), in paddocks with Brachiaria humidicola, with drinking water and mineral salt, but without access to shade. Air temperature (AT), relative air humidity (RH) and black global temperature (BGT) were measured for each treatment. Blood sampling for erythrogram and leukocyte count were undertaken at intervals of 14 days, and carried out at 1:00 p.m., during 2009. AT and black global temperature and humidity index (BGHI) were different (P < 0.05) throughout the year, and their highest values were observed in the NS group. During the rainier period, the SG group presented the highest values of leukocytes (P < 0.05), although in the transition and low rainy periods, the highest values were observed in the NS group. In the low rainy period, the erythrocytes count showed the highest values in the NS group. The highest levels of hemoglobin (P < 0.05) were observed during the transition and low rainy periods. Only hemoglobin presented a significant and negative (P < 0.05) correlation with RH. We concluded that the female Murrah buffaloes are subject to a hostile environment, and that the low rainy period is the most favorable for causing heat stress.
Acesso aberto (Open Access)
Seroprevalence for brucellosis and leptospirosis in dogs from Belém and Castanhal, State of Pará, Brazil
(Instituto Nacional de Pesquisas da Amazônia, 2015-09) PAZ, Giselle Souza da; ROCHA, Katarine de Souza; LIMA, Michele de Souza; JORGE, Ediene Moura; PANTOJA, José Carlos Figueiredo; MORAES, Carla Cristina Guimarães de; LANGONI, Helio
Brucellosis and leptospirosis are widely spread bacterial infections and dogs are the most important source of infection and reservoir for diseases. Dogs can disseminate the agents in the environment and transmit them to humans and/or other animals. The objective of this study was assess the occurrence of reactive to antibodies anti-Leptospira spp., Brucella canis and B. abortus in Belém and Castanhal, State of Pará, Amazon, Brazil. A total of 156 samples were randomly collected in the city of Belém and 158 samples in Castanhal. The anti-B. canis antibodies research was performed by Agar Gel Immunodiffusion (AGID) with and without 2-mercaptoethanol serum treatment (AGID-2ME). To assess the anti-B. abortus antibodies, the technique of Fast Seroagglutination with buffered acidified plate antigen (BAPAT) was used. For anti-Leptospira spp. antibodies research, the Microscopic Agglutination Technique (MAT) was used. No animal reacted to Brucella abortus and one animal was reactive to B. canis at the AGID, but it was negative to the AGID-2ME test. Seventeen percent of dogs (47/274) presented anti-Leptospira spp. antibodies, with prevalence of serovar Canicola. The dogs from Belém and Castanhal are not source of infection for B. abortus and B. canis, however, they are reservoirs for different serovars of Leptospira spp.

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