https://repositorio.ifgoiano.edu.br/handle/prefix/145 2026-09-21T23:54:01Z 2026-09-21T23:54:01Z Salgado, Guilherme Henrique https://repositorio.ifgoiano.edu.br/handle/prefix/6971 2026-09-14T19:15:38Z 2026-07-10T00:00:00Z

Título: DESEMPENHO AGRONÔMICO, PRODUÇÃO E QUALIDADE DA SILAGEM DO MILHO, Brachiaria ruziziensis cv. BRS Integra e Cajanus cajan cv. BRS Guatã Autor(es): Salgado, Guilherme Henrique Primeiro Orientador: Costa, Kátia Aparecida de Pinho Primeiro Membro da Banca: Costa, Kátia Aparecida de Pinho Segundo Membro da Banca: Severiano, Eduardo da Costa Terceiro Membro da Banca: Cezario, Andreia Santos Abstract: Current agricultural production faces complex and urgent challenges related to environmental sustainability, climate change and food security of a growing population. In this context, the objective was to elucidate how the synergism between maize, the new cultivars of Brachiaria ruziziensis cv.BRS Integra and pigeon pea cv. BRS Guatã impacts on the agronomic characteristics of crops, yield, silage quality and economic viability of cropping systems. The experiment was conducted in a randomized block design, with three replications, in a split-plot scheme, with the plots consisting of seven cropping systems: maize, integra grass and guatã in monoculture; maize intercropped with grass maize intercropped with guatã; Integra grass intercropped with guatã and corn intercropped with integra grass and guatã. The evaluations were carried out during two consecutive years in the same plots, and the evaluation years were considered as subplots. The results revealed that the presence of pigeon pea in the double and triple intercropping favored the development of corn, promoting larger stem diameters, higher chlorophyll contents, ear length, resulting in higher dry matter production. In addition, the integration with the legume promoted protein intake, increasing the crude protein contents of silage compared to the monoculture of corn and integral grass. On the other hand, corn ensured better fermentative stability, maintaining pH at adequate levels and reducing effluent production, dry matter losses and providing higher levels of total digestible nutrients and digestibility, while silages without the cereal showed high losses. The cropping systems involving corn, in the second year of evaluation, were strongly influenced by climatic conditions, which resulted in lower production. In the economic evaluation, the triple intercropping presented the highest costs per hectare, but the higher biomass production resulted in lower cost per kilogram of dry matter compared to single corn, with R$ 0.16 and R$ 0.19 in the two years, respectively, against R$ 0.21 and R$ 0.25 in single corn. It was concluded that the triple intercropping between corn, Integra grass and guatã presented the best joint performance between dry mass production, agronomic characteristics, silage quality and economic indicators, constituting a promising alternative for silage production under the conditions evaluated. Editor: Instituto Federal Goiano Tipo: Dissertação

2026-07-10T00:00:00Z Campos, Ralloanny Freitas https://repositorio.ifgoiano.edu.br/handle/prefix/6840 2026-07-30T14:02:27Z 2025-02-17T00:00:00Z

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

2025-02-17T00:00:00Z Silva, Maria das Dores Xavier da https://repositorio.ifgoiano.edu.br/handle/prefix/6609 2026-05-22T00:02:33Z 2026-03-27T00:00:00Z

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

2026-03-27T00:00:00Z Matos, Wildo Pereira https://repositorio.ifgoiano.edu.br/handle/prefix/6596 2026-05-19T12:51:36Z 2026-03-20T00:00:00Z

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

2026-03-20T00:00:00Z