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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

ÁCIDOS ORGÂNICOS NA AQUICULTURA: BILIOMETRIA E REVISÃO SISTEMÁTICA

2025-05-20T21:00:38Z

Título: ÁCIDOS ORGÂNICOS NA AQUICULTURA: BILIOMETRIA E REVISÃO SISTEMÁTICA Autor(es): Melo, Gidelia Araujo Ferreira de Primeiro Orientador: Costa, Adriano Carvalho Primeiro Membro da Banca: Oliveira, Rodrigo Fortunato de Segundo Membro da Banca: Minafra, Cibele Silva Terceiro Membro da Banca: Paulino, Renan Rosa Paulino Abstract: Aquaculture is one of the fastest-growing agricultural activities in recent years, encompassing a lot of commercially important species. Its growth is driven by the rapid achievement of productive results, as many species are cultivated in short cycles and exhibit high feed conversion efficiency. In this context, food safety concerning microbiological variables is of utmost importance, as it is a highly perishable food that requires adequate quality control. Among the food quality assessment parameters, those related to microbiological quality stand out as the most significant, as they provide crucial information that allows for evaluation at various stages, including raw material acquisition, processing, storage, and distribution for consumption, considering shelf life and the associated health risks. Antimicrobials are essential for maintaining human and animal health; however, microbial resistance to antibiotics is a challenge to their effectiveness. In light of this, some alternatives have been explored, such as the use of organic acids. These compounds are already in use in some animal species, aiming to reduce or eliminate pathogenic microorganisms. In aquaculture, their use has been gaining increasing traction as a feed additive due to their effectiveness in improving zootechnical performance, modulating microbiota, and increasing animal survival rates. However, given the variability of results found in the literature regarding the effectiveness of organic acids in aquaculture whether in improving zootechnical performance or enhancing resistance to pathogenic challenges, this work aims to deepen the understanding of their use and impact, conducting a bibliometric analysis and systematic review that identifies scientific trends and challenges surrounding the topic. Beyond the academic context, the sustainability of organic acid use contributes to the teaching of Green Chemistry, providing students with a broader perspective on the role of chemistry in reducing environmental impacts in animal production. Using these compounds as an alternative to antibiotics in aquaculture is a strategy to minimize antimicrobial resistance and reduce chemical residues in aquatic ecosystems. Therefore, addressing this topic in the classroom can stimulate reflections on sustainable practices and the application of Green Chemistry principles in aquaculture, preparing students for a critical and innovative view of the future of aquaculture production. Editor: Instituto Federal Goiano Tipo: Dissertação

SUPLEMENTAÇÃO NA FASE DE PRÉ-TERMINAÇÃO E TEMPO DE ADAPTAÇÃO AO CONFINAMENTO DE VACAS NELORE DE DESCARTE

2025-05-05T22:58:20Z

Título: SUPLEMENTAÇÃO NA FASE DE PRÉ-TERMINAÇÃO E TEMPO DE ADAPTAÇÃO AO CONFINAMENTO DE VACAS NELORE DE DESCARTE Autor(es): Oliveira, Katryne Jordana Primeiro Orientador: Guimarães, Tiago Pereira Abstract: Adaptation to the feedlot system is important and should be done gradually to avoid metabolic disorders and performance fluctuations, since the animals have come from a forage-rich diet to one with a high proportion of concentrate. The objective was to evaluate the supplementation impact during the grazing period and the duration of dietary adaptation in the feedlot on performance and carcass quality of cull Nelore cows. The experiment was conducted at the Livestock Sector of the Comigo Technological Center (CTC), in Rio Verde, Goiás, Brazil, from May to August 2022. Before feedlot finishing, the animals were managed on Tifton-85 grass pasture (Cynodon dactylon) for 60 days. The experimental design used during the grazing period was completely randomized with two treatments (mineral supplement at 0.05% of body weight, and protein-energy supplement at 0.6% of body weight), with eight replicates per treatment. In the feedlot phase, the experimental design was also completely randomized, in a 2 x 2 factorial scheme, with two supplementations (mineral at 0.05% of body weight and protein-energy at 0.6% of body weight) and two adaptation periods (10 and 20 days). Thus, the treatments used were: 1) mineral supplement with a 10-day adaptation period; 2) mineral supplement with a 20-day adaptation period; 3) protein-energy supplement at 0.6% of body weight with a 10-day adaptation period; and 4) protein-energy supplement at 0.6% of body weight with a 20-day adaptation period. A total of 94 Nelore cows were used, all over 5 years old, non-pregnant, with an average initial body weight (BW) of 327 ± 54 kg. It was concluded that prior supplementation with protein-energy supplement resulted in greater initial and final weight gain in the feedlot, improved body condition score, higher slaughter weight and hot carcass weight, better carcass yield, and increased marbling in cull Nelore cows finished in feedlot conditions. Additionally, a 20-day adaptation period in the feedlot promoted higher feed intake and better fecal score. Editor: Instituto Federal Goiano Tipo: Dissertação

ÓLEO ESSENCIAL DE CINNAMOMUM VERUM E ORIGANUM VULGARE NA SANITIZAÇÃO DE OVOS INCUBÁVEIS

2025-05-05T22:58:35Z

Título: ÓLEO ESSENCIAL DE CINNAMOMUM VERUM E ORIGANUM VULGARE NA SANITIZAÇÃO DE OVOS INCUBÁVEIS Autor(es): Estevão, Marcello Borges Primeiro Orientador: Minafra, Cibele Silva Primeiro Membro da Banca: Minafra, Cibele Silva Abstract: The growth of broiler chicken production leads to conditions that require proper management in the hatchery to avoid environmental issues due to waste generation. This is because the high productivity of broiler chicks results from the efficient work of hatcheries and consequent profitability of the business. It depends on the application and knowledge of factors influencing broiler chick production, with each stage requiring meticulous management, standardization, and positive results. For example, the percentage of chicks born with a high standard. As a strategy in the poultry industry, the cleaning of fertile eggs is employed to reduce the microbial load on the eggshells. This chapter presents a study about the management of fertile eggs from selection on the farm to incubation and chick hatching, depicting each phase and emphasizing the potential use of natural sanitizing alternatives, such as essential oils, and the methods of sanitizing fertile eggs used. For this purpose, a literature review methodology was applied through bibliographic research, where the most recent period was analyzed. Articles, theses, and dissertations from various databases were used to compile this review. It is concluded that formaldehyde is the most used conventional sanitizer due to its easy application. However, when it encounters water, forming the solid paraformaldehyde, the procedure becomes unhealthy due to its toxic potential to workers, which leads to health issues ranging from respiratory problems to cancer. It also has a negative environmental impact, contaminating soil and water. As a result, alternative sanitization with natural products, such as essential oils, has been widely studied in poultry farming, considering their sanitizing potential as a safe option in poultry production. The aim is to ensure food safety and improve working conditions for those involved in chick production, focusing on sustainability and providing healthy, environmentally viable products. Therefore, it was observed that more research is still needed to consolidate the use of natural sanitizers in hatchery routines. Editor: Instituto Federal Goiano Tipo: Dissertação