http://repositorio.ufc.br/handle/riufc/88 Sat, 15 Aug 2026 22:34:39 GMT 2026-08-15T22:34:39Z http://repositorio.ufc.br/handle/riufc/87168 Título: Estudo dos níveis de energia e proteína em dietas para frangos de corte no Tropico Semi-árido Autor(es): Oliveira, Luciano Martins de Abstract: The present experiment was conducted afc the poultry facilities of the Departamento de Zootecnia of the Universidade Federal do Ceará, Brazil, with the objective of evaluating different levels of energy and protein in diets for broilers, explored under tropical conditions. [...] Tipo: Dissertação Tue, 01 Jan 1991 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/87168 1991-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/86879 Título: Fontes alternativas de cama de frangos para alimentação de ruminantes Autor(es): Alves, Arnaud Azevêdo Abstract: This work was conducted at Departamento de Zootecnia of the Universidade Federal do Ceará, Brasil, with the aim of evaluate productive performance and production of litter and waste for Hubbard broilers explored over dtfferenfcc material G for broiler litter and the nutritive value of this for ruminants. [...] Tipo: Dissertação Tue, 01 Jan 1991 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/86879 1991-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/86873 Título: Compostos fenólicos hidrofílico e lipofílico na dieta de porcas durante a gestação e lactação sobre o desempenho produtivo e reprodutivo Autor(es): Vieira, Eloisa Helena Mendes Abstract: The objective of this study was to evaluate the effects of hydrophilic and lipophilic phenolic compound supplementation in the diet of sows during gestation and lactation on productive performance, colostrum and milk composition, hematological and biochemical parameters, and antioxidant enzyme activity in sows and piglets. A total of 300 highly prolific sows were distributed in a completely randomized design with a 4 × 3 factorial arrangement, considering four parity orders (1st, 2nd, 3rd–4th, and 5th–6th) and three supplementation levels (0, 200, and 400 mg/day). Blood samples from sows and piglets, as well as colostrum and milk samples, were collected for laboratory analyses. No interaction was observed between supplementation and parity order. Supplementation reduced oxidative stress in sows, evidenced by lower malondialdehyde concentrations and higher superoxide dismutase (SOD) and glutathione peroxidase (GPx) activities, in addition to altering blood triglyceride levels. Colostrum from sows supplemented with 400 mg/day showed higher fat content. In piglets, maternal supplementation increased total cholesterol, LDL cholesterol, total phenolic compounds, and SOD and GPx activities, while reducing C-reactive protein levels. Parity order influenced productive performance, milk composition, and litter performance parameters. First-parity sows had fewer piglets born, whereas second-parity sows showed greater milk production. Piglets from 1st- and 5th–6th-parity sows showed lower performance compared with those from 2nd-parity sows. It was concluded that supplementation with hydrophilic and lipophilic phenolic compounds did not affect productive parameters but improved the antioxidant status of sows and piglets. Tipo: Tese Wed, 01 Jan 2025 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/86873 2025-01-01T00:00:00Z http://repositorio.ufc.br/handle/riufc/86865 Título: Criação e manejo de duas espécies de abelhas solitárias das tribos Anthidiini e Megachilini (Hymenoptera: Megachilidae) no Nordeste do Brasil Autor(es): Cavalcante, Arianne Moreira; Cavalcante, Arianne Moreira Abstract: Solitary bees that nest in pre-existing cavities constitute important models for the study of reproductive biology and present potential for management strategies aimed at conservation and pollination. However, for many Neotropical species, especially in anthropized environments, there are still significant gaps in knowledge about their bionomics and response to management. In this context, this thesis investigated the nesting biology, reproductive traits, and rearing potential of two species of Megachilidae, Dicranthidium arenarium (Anthidiini) and Megachile (Ptilosarus) cf. xanthura (Megachilini), in an urban area in Northeast Brazil. The study was conducted between August 2021 and November 2023, through the installation of trap nests with cavities of different dimensions. Nesting activities were monitored daily, and females of both species were individually marked, allowing continuous tracking from cavity occupation to adult emergence of their brood. The study evaluated aspects related to nesting behavior, nest architecture, reproductive effort, sex ratio, mortality, seasonality, and the influence of environmental variables, as well as the species' response to management interventions, such as the provision of nesting materials. D. arenarium predominantly used plant resin in nest construction, with flexibility in the use of alternative materials such as meliponine wax and resin. It demonstrated a preference for longer cavities (10 cm), a sex ratio skewed towards males, and an absence of significant correlation between nesting activity and climatic variables. The availability of nesting materials mitigated robbing and favored an increase in nesting, highlighting the importance of these resources as a limiting factor. The species exhibited behaviors that are still poorly understood, such as the prolonged stay of females inside the nest after oviposition. On the other hand, Megachile (P.) cf. xanthura built nests exclusively with leaf fragments, exhibited high reproductive efficiency and strong seasonality, with activity concentrated in periods of higher temperature and lower humidity. This species showed a sex ratio biased towards females, low incidence of parasitism, and a high rate of return to the emergence site, characteristics associated with good performance in trap nests. These results indicate potential for use in management programs and directed pollination. In an integrated way, the results demonstrate that both species respond positively to the use of trap nests but differ in the factors that influence their reproductive success. While D. arenarium is more sensitive to the availability of nesting materials, M. (P.) cf. xanthura responds mainly to climatic conditions. These results highlight that management strategies must consider the specific ecological requirements of each species. Thus, this work expands knowledge about the biology of solitary bees in Northeast Brazil and provides practical support for the development of management techniques aimed at the conservation, monitoring, and potential use of these species in pollination and environmental restoration programs. Tipo: Tese Thu, 01 Jan 2026 00:00:00 GMT http://repositorio.ufc.br/handle/riufc/86865 2026-01-01T00:00:00Z