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BLEND DE ÓLEOS FUNCIONAIS COMO SUBSTITUTO SUSTENTÁVEL AOS ANTIBIÓTICOS E ANTIOXIDANTES NA DIETA DE CODORNAS JAPONESAS

2026-07-30T14:02:27Z

Título: BLEND DE ÓLEOS FUNCIONAIS COMO SUBSTITUTO SUSTENTÁVEL AOS ANTIBIÓTICOS E ANTIOXIDANTES NA DIETA DE CODORNAS JAPONESAS Autor(es): Campos, Ralloanny Freitas Primeiro Orientador: Minafra, Cibele Silva Primeiro Membro da Banca: Costa, Adriano Carvalho Segundo Membro da Banca: Gomide, Ana Paula Cardoso Terceiro Membro da Banca: Silva, Júlia Marixara Sousa da Abstract: Quail eggs are a significant part of the national poultry market, both in terms of health and nutrition as well as economic potential. With the increasing awareness of healthy and sustainable eating, the demand for these eggs is expected to continue growing. Considering the search for alternatives to the use of antimicrobial growth promoters and antioxidants in the poultry industry, this is a highly relevant topic, especially given the restrictions imposed in several countries. As an alternative, functional oils are those that contain bioactive compounds that can improve health and food quality. These oils help prevent lipid oxidation, which can lead to food spoilage. The exploration of properties and applications of these oils is a growing field, with potential for new discoveries and innovations. Cashew oil, extracted from the cashew nut (Anacardium occidentale), has several beneficial properties in addition to a rich composition of active ingredients. It is composed of several acids such as anacardic acid, cardol, and cardanol, which have antimicrobial, anti-inflammatory, and antioxidant activities. Castor oil, extracted from seeds of the castor bean plant (Ricinus communis), has antimicrobial and antioxidant properties. Copaiba oil, extracted from the copaiba tree (Copaifera spp.) resin, has anti-inflammatory and analgesic properties. However, as it is a very heterogeneous group in terms of its compositions, the results of this supplementation are still variable and uncertain in relation to inclusion levels and interactions among them. Further studies are needed to determine the best combinations of temperature, duration, and types of functional oils to maximize egg quality. Editor: Instituto Federal Goiano Tipo: Dissertação

PRODUÇÃO DE BIOGÁS A PARTIR DE DEJETOS SUÍNOS: EFEITOS SAZONAIS NO RENDIMENTO DE METANO E NO DESEMPENHO DO BIODIGESTOR

2026-05-22T00:02:33Z

Título: PRODUÇÃO DE BIOGÁS A PARTIR DE DEJETOS SUÍNOS: EFEITOS SAZONAIS NO RENDIMENTO DE METANO E NO DESEMPENHO DO BIODIGESTOR Autor(es): Silva, Maria das Dores Xavier da Primeiro Orientador: Minafra, Cibele Silva Abstract: This study evaluated the influence of seasonal conditions on the biogas profile generated from swine manure treated in a German-type biodigester. The research was conducted at a finishing pig farm located in the municipality of Rio Verde, Goiás, Brazil, consisting of three production units and totaling approximately 28,000 animals.The residues, composed of feces, urine, feed leftovers, and wash water from the facilities, were subjected to mechanical agitation and subsequently directed to a Continuous Stirred-Tank Reactor (CSTR). The monitoring of biogas production and composition was carried out over a twelve-month period, covering different seasonal conditions, in order to assess the influence of climatic and operational factors on anaerobic digestion efficiency.Measurements were performed three times a day (at 08:00, 11:00, and 16:00) at a fixed point in the pipeline, using a portable digital multigas analyzer capable of quantifying the concentrations of carbon dioxide (CO2), methane (CH4), oxygen (O2), and hydrogen sulfide (H2S).Statistical analyses were conducted in the R environment (R Core Team, 2024), using Pearson correlation, Generalized Additive Models (GAM), and cluster analysis.The results indicated that the observed correlations confirm the influence of oxygen (O2) and temperature on methanogenesis and sulfidogenesis processes. CH4 and CO2 production showed seasonal stability, while O2 and H2S concentrations varied significantly, indicating greater sensitivity to climatic conditions. Cluster analysis demonstrated that more strictly anaerobic environments favor higher methane production.Thus, the integrated monitoring of gases and environmental factors is essential to ensure bioreactor stability, demonstrating that the efficiency of anaerobic digestion depends on the balance between microbiological processes and the adopted operational practices. Editor: Instituto Federal Goiano Tipo: Dissertação

INTERCROPPING MAIZE WITH Panicum maximum AND Stylosanthes CULTIVARS IMPROVES SILAGE PRODUCTION AND QUALITY IN INTEGRATED SYSTEMS

2026-05-19T12:51:36Z

Título: INTERCROPPING MAIZE WITH Panicum maximum AND Stylosanthes CULTIVARS IMPROVES SILAGE PRODUCTION AND QUALITY IN INTEGRATED SYSTEMS Autor(es): Matos, Wildo Pereira Primeiro Orientador: Costa, Kátia Aparecida de Pinho Primeiro Membro da Banca: Costa, Kátia Aparecida de Pinho Abstract: The adoption of silage production strategies focused on improving quality, combined with environmental conservation, is essential to ensure the production sustainability and the best use of resources. This study aimed to evaluate the effect of triple intercropping of Maize, Panicum maximum cultivars, and Stylosanthes on dry matter production, fermentation profile, and nutritional value of silages, compared to monoculture of these crops. The experiment was carried out in the field, in a randomized block design, with nine treatments and three replications. The following silage treatments were evaluated: Maize monoculture; tamani grass monoculture; Quenia guinea grass monoculture; Stylosanthes cv. Bela monoculture; Stylosanthes cv. Campo Grande monoculture; Maize intercropped with Tamani grass and Bela; Maize intercropped with tamani grass and Campo Grande; Maize intercropped with Quenia guinea grass and Bela; and Maize intercropped with Quenia guinea grass and Campo Grande. The results showed that the intercropping increased silage mass production and improved fermentative characteristics, with reductions of 10.91%; 25.03%; 37.43%; 33.94% and 26.68% in pH, buffering capacity, ammoniacal nitrogen, total dry matter losses and effluent production, respectively, compared to silages of Panicum maximum and Stylosanthes cultivars in monoculture. Furthermore, there was a 26.10% increase in crude protein content compared to Maize silage. Among the Stylosanthes cultivars, Bela showed the greatest intercropping capacity. Regarding the Panicum maximum cultivars, both can be recommended for intercropping. It is concluded that the Maize system with Panicum maximum and Stylosanthes cultivars can be recommended for silage production, focusing on sustainability and reducing costs with mineral fertilization. Keywords: Forage conservation; triple intercropping; legumes; sustainability. Editor: Instituto Federal Goiano Tipo: Dissertação

EXTRATO DE UVA NA ALIMENTAÇÃO DE CODORNAS JAPONESAS EM FINAL DE CICLO SUBMETIDAS AO ESTRESSE POR CALOR

2025-07-01T17:40:08Z

Título: EXTRATO DE UVA NA ALIMENTAÇÃO DE CODORNAS JAPONESAS EM FINAL DE CICLO SUBMETIDAS AO ESTRESSE POR CALOR Autor(es): Silva, Nathan Ferreira da Primeiro Orientador: Santos, Fabiana Ramos dos Primeiro Membro da Banca: Gomide, Ana Paula Cardoso Segundo Membro da Banca: Oliveira, Maria Cristina de Abstract: The objective was to evaluate the use of grape extract in the diet of Japanese quails at the end of the production cycle, subjected to heat stress, aiming at improvements in production performance, egg quality, physiological parameters, digestibility, as well as hepatic and intestinal functions. The experiment was conducted in a completely randomized design, with five treatments (0, 250, 500, 750, and 1000 mg/kg of grape extract), six replicates, and six birds per experimental unit, totaling 180 quails. Zootechnical performance, fresh and stored egg quality, behavior, thermal comfort, physiological parameters, blood biochemical profile, biometry and bone mineralization, nutrient digestibility, gastrointestinal and hepatic tract morphometry, ovarian follicle count, and hepatic biochemical indicators (GOT, GPT, cholesterol, triglycerides, and total proteins) were analyzed. Grape extract did not significantly affect (p < 0.05) the productive performance, behavior, or physiological variables of quails, but it positively influenced (p < 0.05) aspects of egg quality (Haugh unit, albumen pH, and yolk color), in addition to raising body temperature effect on thermoregulation and crude protein digestibility. Although it did not promote consistent improvements in overall performance, the data point to the antioxidant and functional potential of grape extract, supporting its use as a natural additive in diets for laying hens subjected to heat stress. Grape extract, although it does not mitigate the effects of heat stress on the performance, metabolism, welfare, and intestinal and hepatic health of Japanese quails at the end of the production cycle, improves egg quality at doses of 250 to 400 mg/kg and has thermogenic potential, suggesting further investigation in young birds or under thermal comfort conditions. Editor: Instituto Federal Goiano Tipo: Dissertação