Navegando por Autor "CASTRO, Paulo Henrique Gomes de"

Agora exibindo 1 - 3 de 3

Acesso aberto (Open Access)
Conservação do sêmen e liquefação do coágulo seminal de macaco-prego (Cebus apella) em água de coco em pó (ACP-118®), em diferentes temperaturas
(2010-03) OLIVEIRA, Karol Guimarães; CASTRO, Paulo Henrique Gomes de; MUNIZ, José Augusto Pereira Carneiro; DOMINGUES, Sheyla Farhayldes Souza
The aim of this study was to evaluate the powdered coconut water (PCW) in the semen conservation and seminal clot liquefaction. The semen of six adult male Cebus apella was collected by electroejaculation (EEJ), diluted in ACP-118® extender and stayed in water bath at 33, 35 and 37°C for 24 hours. The sperm integrity was evaluated by eosin-nigrosine staining every one hour during the six initial hours and after 24 hours of incubation. The average volumes and sperm concentrations of clotted and liquid fractions were 0.20±0.02 and 0.20±0.10mL, 1.1±0.3x108 and 1.3±0.9x107 sperm mL-1, respectively. Immediately after collection, only in a sample of liquid fraction was observed 20% motility and vigor 4, which stopped after 40 minutes. Most of the clot was liquefied in ACP-118® after 12 hours of incubation. The best observed treatment was 33°C, because it kept 47±12.8% of sperm integrity after 24 hours. It was concluded that the PCW extender is effective in the liquefaction of seminal clot and maintenance of sperm viability 24 hours after the EEJ at 33, 35 and 37°C.
Acesso aberto (Open Access)
Determinação de hemogregarina em Boa constrictor constrictor mantidos em cativeiro
(2012-08) LUZ, Monique Araújo; MENESES, Andre Marcelo Conceição; MORAES, Carla Cristina Guimarães de; SEIXAS, Larissa dos Santos; LIMA, Dennis José da Silva; RUFFEIL, Luis Augusto Araújo dos Santos; CASTRO, Paulo Henrique Gomes de; COSTA, Antonio M.
We aimed to determine hemogregarines presence in snakes of the Boidae family kept in captivity in Pará (PA), Brazil, and to relate it with sex, clinical and hematological and ectoparasitism. This study had authorization from Sisbio/IBAMA to be done. Nineteen Boa constrictor snakes were used, belonging to the "Museu Paraense Emílio Goeldi" (Belém/ PA) and "Xerimbabo Farm" (Santo Antônio do Tauá/PA). Blood smears were examined with 400x magnification, while the parasitemia percentage was determined by counting 550 red blood cells with 1000x magnification. From the snakes studied (n=19), nine were parasitized (47.36%) and there was no correlation between hemogregarines presence, sex, clinical and hematological changes. Hemoparasitosis correlation was detected only with the ectoparasites presence; however further studies are needed to determine the real hemogregarines prevalence in snakes kept in captivity in Pará, since there is a huge gap of data in the veterinary specialized literature about the fauna of the Amazon region.
Acesso aberto (Open Access)
Propondo um problema de forrageio como meio de enriquecer o cativeiro: um estudo comparativo de duas espécies de primatas brasileiros (Callithrix penicillata e Saguinus imperator)
(Universidade Federal do Pará, 2003-10-17) CASTRO, Paulo Henrique Gomes de; FERRARI, Stephen Francis; http://lattes.cnpq.br/3447608036151352
This study analysed the influence of a simple insect foraging puzzle on the behaviour of two callitrichine species (Callitrichinae, Primates) maintained in captivity at the National Primate Centre (CENP), in Ananindeua, in the Brazilian state of Para. In addition to comparing the two species, the study aimed to evaluate the viability of the puzzle as a strategy of environmental enrichment for these primates in captivity. Three adult pairs of each species – the pencil-tufted marmoset (Callithrix penicillata) and the emperor tamarin (Saguinus imperator) – were included in the study, which also focussed differences between genders. Observations were conducted through the video-taping of three-hour sessions, divided into control (puzzle absent) and experimental (puzzle present) periods, with a total of 36 hours of observation for each pair. Control sessions were used to calculate baseline activity budgets for comparisons with behaviour patterns during experimental sessions. Tapes were transcripted, and all behaviour events were timed, providing measures of both the frequency and duration of events. The puzzle did not have a major effect on general activity budgets, but its effect was clearly different in each species, with manipulation of the puzzle accounting for 3.96% of the time of the marmosets, but only 1.99% of that of the tamarins. During experimental sessions, the marmosets spent 17% less time at rest in comparison with their baseline budget, whereas rest was reduced by less than 7% in the tamarins, with general activity increasing 10%. These changes varied considerably when comparing genders, however – male tamarins presented a 58% increase in general activity and a 23% reduction in rest, whereas these values were 4% and 10%, respectively, in male marmosets. Female tamarins presented an opposite pattern, with rest increasing 18% and general activity falling 14%, while female marmosets had a reduction in both categories by a little less than ten percent. All the animals learned to manipulate the puzzle and capture insects, although the marmosets were far more persistent, capturing 54% more insects, on average, than the tamarins. Females were more successful in both species, but only marginally so in the marmosets. In the tamarins, by contrast, females were 16% more successful than males. Overall, the puzzle proved to be efficient as a means of enriching the captive environment of both species, by stimulating manipulative behaviour and reducing inactivity.