Orientador: Katia Sivieri / Orientador no exterior: Lene Jespersen / Banca: Suzana Marta Isay Saad / Banca: Adriane Elisabete Antunes de Moraes / Banca: Carla Raquel Fontana Mendonça / Banca: Marcia Pinto Alves Mayer / Resumo: Diversos subprodutos de frutas tropicais, os quais são frequentemente descartados pelas indústrias alimentícias, apresentam elevado conteúdo de fibras e de compostos bioativos. Estes compostos, assim como determinadas cepas probióticas e algumas pectinas presentes nos subprodutos, têm o potencial de modular a microbiota intestinal humana, promovendo diversos benefícios à saúde, tais como a atenuação de parâmetros relacionados à obesidade. O objetivo deste trabalho foi avaliar os efeitos da pectina do limão, de subprodutos secos de frutas tropicais (acerola e camu-camu) e de diferentes cepas probióticas (Bifidobacterium longum BB-46, Lactobacillus acidophilus LA-5 and L. paracasei L-431) na microbiota intestinal de indivíduos eutróficos e obesos utilizando o Simulador do Ecossistema Microbiano Humano (SEMH®). Seis artigos foram desenvolvidos a fim de se responder os objetivos propostos. O primeiro artigo trata-se de uma mini-revisão e, os cinco restantes, artigos originais. No primeiro artigo, sumarizou-se os principais achados sobre a composição da microbiota intestinal de obesos e, revisou-se as novas estratégias de modulação da microbiota intestinal em favor do tratamento da obesidade. Foi possível mostrar que a composição da microbiota intestinal é essencial para o entendimento de mecanismos envolvidos na etiologia da obesidade e que, várias estratégias, tais como, o consumo de prebióticos e probióticos, bem como a prática de atividade física moderada e regular, podem modu... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Several by-products of tropical fruits, which are often discarded by the food industry, have high fibre content and bioactive compounds. These compounds, as well as certain probiotic strains and some pectins present in the by-products, have the potential to modulate the human gut microbiota, promoting several health benefits, including the attenuation of obesity parameters. The aim of this work was to evaluate the effects of lemon pectin, dried by-products of tropical fruits (acerola and camu-camu), as well as of different probiotic strains (Bifidobacterium longum BB-46, Lactobacillus acidophilus LA-5 and L. paracasei L-431) on the gut microbiota from healthy-weight and obese individuals using the Simulator of the Human Intestinal Microbial Ecosystem (SHIME®). Six articles were developed in order to meet the proposed aims. The first article is a mini-review and the other five are original articles. In the first article, we summarized the principal findings on obesity-related microbiota composition and reviewed new strategies for gut microbiota modulation in favour of obesity treatment. We showed that the composition of the microbiota is essential for understanding the mechanisms involved in the aetiology of obesity and, that several strategies, such as consumption of probiotics and prebiotics, as well as moderate and regular physical activity, can modulate the gut microbiota in favour of obesity treatment. In the second article, the chemical composition, the total phenolic co... (Complete abstract click electronic access below) / Resumé: Flere biprodukter fra tropiske frugter, som ofte kasseres af fødevareindustrien, har højt fiberindhold og bioaktive forbindelser. Disse forbindelser, såvel som visse probiotiske stammer og nogle pektiner, der er til stede i biprodukterne, har potentialet til at modulere den humane tarmmikrobiota, der fremmer flere sundhedsmæssige fordele, herunder dæmpning af fedmeparametre. Formålet med dette arbejde var at evaluere virkningerne af citronpektin, tørrede biprodukter fra tropiske frugter (acerola og camu-camu), samt forskellige probiotiske stammer (Bifidobacterium longum BB-46, Lactobacillus acidophilus LA-5 og L. paracasei L-431) på tarmmikrobioten fra raske og overvægtige individer, under anvendelsen af den humane intestinale mikrobielle økosystem simulator (SHIME®). Seks artikler blev udviklet for at opfylde de foreslåede mål. Den første artikel er en mini-anmeldelse, og de andre fem er originale artikler. I den første artikel opsummerede vi de vigtigste fund om fedme-relateret mikrobiota sammensætning og gennemgik nye strategier for tarmmikrobiota modulering til fordel for fedmebehandling. Vi viste, at mikrobiotas sammensætning er afgørende for forståelsen af mekanismerne i fedmens etiologi, og at flere strategier, såsom forbrug af probiotika og præbiotika, samt moderat og regelmæssig fysisk aktivitet kan modulere tarmmikrobiotaten til fordel for fedme behandling. I det anden artikel blev den kemiske sammensætning, de samlede phenolforbindelser og in vitro antioxidantkapac / Doutor

ABSTRACT As far back as the early 1900?s when it was discovered that water could be a mode of transmitting diseases, chlorine was used to disinfect water. In the 1970?s, the formation of disinfection by-products (DBPs) from the reaction of chlorine with natural organic matter was discovered. Since then there have been various studies on alternative disinfectants that could inactivate microorganisms and at the same time form less or no disinfection by-products. More recently the ultraviolet (UV) irradiation has been used to both disinfect and remove organic contaminants in drinking water. Though the use of UV irradiation has been found to be very effective in the inactivation of microorganisms, it does not provide a residual effect to maintain the water?s microbial quality in the distribution system. Due to this, a secondary disinfectant such as chlorine has to be used to achieve microbial stability, suggesting that the formation of chlorination disinfection by-products would still occur but perhaps in different quantities and with different chemical species. In this research, the use of factorial experiments and single factor experiments were used to determine the effects of pH, alkalinity and UV-fluence (dose) on the formation of three classes of disinfection by-products; haloacetic acids (HAAs), haloacetonitriles (HANs) and trihalomethanes (THMs). These disinfection by-products were measured in water samples following post-UV chlorination and the UV treatment was either UV photolysis or UV/H₂O₂. From the factorial experiment results, treatment of synthetic water with UV/H₂O₂, an advanced oxidation process (AOP), produced fewer post-UV chlorination disinfection by-products (PCDBPs) than UV photolysis. For chlorinated PCDBPs, the percentage difference between UV photolysis and UV/H₂O₂ was 55, 65 and 38% for total HAAs (HAA₉), total HANs (THANs) and total THMs (TTHMs) respectively. The percentage difference between UV photolysis and UV/H₂O₂ for brominated PCDBPs was 41 and 42% for HAA9 and TTHMs respectively. Both the use of pH and alkalinity proved to be factors that were significant in affecting the yields of the PCDBPs studied. Increases in alkalinity were found to increase the formation of PCDBPs in the treatment of synthetic water with UV/H₂O₂. Alkalinity had the opposite effect for PCDBP formed under UV photolysis conditions. Increases in pH always decreased the formation of PCDBPs. In the single factor experiments, haloacetic acid concentrations were unaffected as alkalinity was increased but dichloroacetonitrile and chloroform increased in concentration under treatment conditions of UV photolysis followed by chlorination. The UV/H₂O₂ treatment resulted in a decrease in concentration of the PCDBPs. In the pH studies, water samples were subjected only to the UV/H₂O₂ treatments and a reduction in concentration of PCDBPs occurred between pH 7 and 9.

ABSTRACT As far back as the early 1900?s when it was discovered that water could be a mode of transmitting diseases, chlorine was used to disinfect water. In the 1970?s, the formation of disinfection by-products (DBPs) from the reaction of chlorine with natural organic matter was discovered. Since then there have been various studies on alternative disinfectants that could inactivate microorganisms and at the same time form less or no disinfection by-products. More recently the ultraviolet (UV) irradiation has been used to both disinfect and remove organic contaminants in drinking water. Though the use of UV irradiation has been found to be very effective in the inactivation of microorganisms, it does not provide a residual effect to maintain the water?s microbial quality in the distribution system. Due to this, a secondary disinfectant such as chlorine has to be used to achieve microbial stability, suggesting that the formation of chlorination disinfection by-products would still occur but perhaps in different quantities and with different chemical species. In this research, the use of factorial experiments and single factor experiments were used to determine the effects of pH, alkalinity and UV-fluence (dose) on the formation of three classes of disinfection by-products; haloacetic acids (HAAs), haloacetonitriles (HANs) and trihalomethanes (THMs). These disinfection by-products were measured in water samples following post-UV chlorination and the UV treatment was either UV photolysis or UV/H₂O₂. From the factorial experiment results, treatment of synthetic water with UV/H₂O₂, an advanced oxidation process (AOP), produced fewer post-UV chlorination disinfection by-products (PCDBPs) than UV photolysis. For chlorinated PCDBPs, the percentage difference between UV photolysis and UV/H₂O₂ was 55, 65 and 38% for total HAAs (HAA₉), total HANs (THANs) and total THMs (TTHMs) respectively. The percentage difference between UV photolysis and UV/H₂O₂ for brominated PCDBPs was 41 and 42% for HAA9 and TTHMs respectively. Both the use of pH and alkalinity proved to be factors that were significant in affecting the yields of the PCDBPs studied. Increases in alkalinity were found to increase the formation of PCDBPs in the treatment of synthetic water with UV/H₂O₂. Alkalinity had the opposite effect for PCDBP formed under UV photolysis conditions. Increases in pH always decreased the formation of PCDBPs. In the single factor experiments, haloacetic acid concentrations were unaffected as alkalinity was increased but dichloroacetonitrile and chloroform increased in concentration under treatment conditions of UV photolysis followed by chlorination. The UV/H₂O₂ treatment resulted in a decrease in concentration of the PCDBPs. In the pH studies, water samples were subjected only to the UV/H₂O₂ treatments and a reduction in concentration of PCDBPs occurred between pH 7 and 9.

As aquaculture continues to expand, protein sources have become more costly and less available. Simultaneously, lipid-extracted algal meals (LEA) (co-products of bio-diesel production) are becoming increasingly available as alternative sources of energy are investigated. By integrating LEA into aquaculture diets, feed prices could be lowered and bio-diesel production would have an additional revenue stream. Three feeding trials each of 7 weeks duration were conducted to evaluate five different algal meals as partial replacements for fishmeal and soy protein concentrate in diets for juvenile red drum (Sciaenops ocellatus). Apparent digestibility coefficients (ADCs) for CP and energy in various LEAs also were determined with red drum and hybrid striped bass (HSB). In the first trial, whole algae meal and LEA derived from Navicula sp. replaced 5 or 10% of the crude protein (CP) in the reference diet. Weight gain, feed efficiency (FE), hepatosomatic index (HSI), as well as protein and energy retention were not significantly (P>0.05) affected by the dietary treatments. Algal inclusion significantly affected the ADCs of the various dietary treatments for dry matter, CP, and energy. The inclusion of ash in the form of diatomaceous earth improved digestibility of protein as well as weight gain, survival and FE. A second feeding trial evaluated LEA derived from Chlorella sp. processed at high temperatures, replacing 5, 10, 20, and 25% of the CP in the reference diet. Weight gain, FE, survival, and protein efficiency ratio (PER) were significantly reduced at substitution levels of 20 and 25%. The third feeding trial evaluated LEA derived from Nanochloropsis salina, replacing 5, 7.5, 10, and 15% of the CP in the reference diet. Weight gain, FE, survival, and PER were significantly affected by some dietary treatments, with the 15% substitution levels causing significant reductions in performance. Intraperitoneal fat ratio and whole-body lipids were significantly lower in the fish fed the 15% substitution diet. Based on the results of these experiments, replacement of up to 10% of CP from fishmeal and soy protein concentrate with LEA was possible without causing substantial reductions in fish performance, and the whole algae product provided a more nutritious product. Red drum and HSB showed similar responses in their ability to digest CP and energy from the various algal products, although ADCs varied greatly among the different products and processing methods.

Resumo: A proteína é um nutriente de elevado custo em rações para peixes, sendo importante a realização de pesquisas com o objetivo de avaliar fontes alternativas de proteína para reduzir o custo na alimentação. Para tal, é necessário caracterizar o produto quimicamente, bem como determinar o seu valor nutritivo. Este trabalho foi realizado com o objetivo de caracterizar quimicamente e avaliar o valor nutritivo da farinha de vísceras de avestruz na alimentação da tilápia-do-Nilo. Inicialmente, a farinha foi caracterizada quimicamente por meio das análises de matéria seca, energia bruta, proteína bruta, extrato etéreo, minerais (cálcio, fósforo), ácidos graxos e aminoácidos. Também foram avaliados os parâmetros de pH e acidez no 1º; 7º; 15º e 30º dia após a fabricação de farinha de vísceras, e realizado o teste de granulometria logo após sua fabricação. Os coeficientes de digestibilidade aparente da proteína, energia bruta, e fósforo da farinha para a tilápia-do-Nilo foram determinados pelo método modificado de Guelph, utilizando como indicador o óxido de cromo III (0,1%). A farinha de vísceras de avestruz é um alimento com elevado valor de energia e teores de proteína, minerais e ácidos graxos, além de possuir boa estabilidade oxidativa e microbiológica durante o armazenamento, com granulometria adequada para ser utilizada em rações para animais e boa fonte de energia e proteína para tilápia-do-Nilo / Abstract: Protein is the most expensive nutrient in fish diet, and are important researches evaluating alternative sources to produce cost effectiveness diets. For this, it is necessary characterize its chemical composition and determine its nutritional value. This work was undertaken out to characterize chemically and evaluate the nutritive value of ostrich viscera meal for Nile tilapia. Initially, the viscera meal was chemically characterized in terms of dry matter, gross energy, crude protein, ether extract, minerals (calcium, phosphorus), fatty acids and amino acids. Data of pH and acidity were obtained from ostrich viscera meal at 1st, 7th, 15th and 30th days after manufacture, while the granulometry test was performed immediately after the manufacturing. The apparent digestibility of dry matter, protein, fat, calcium and phosphorus were obtained for Nile tilapia using the modified method of Guelph, using as an indicator chromium III oxide (0.1%). The production yield of ostrich viscera meal in relation to the fresh and dried viscera is 21.75%. The ostrich viscera meal has high amounts of energy, protein, minerals and fatty acids, and good oxidative and microbial stability during storage, with a particle size suitable to be used in animal feed and also good source of energy and protein for Nile tilapia / Orientador: Pedro Fernando Romanelli / Coorientador: Wilson Massamitu Furuya / Banca: José Francisco Lopes Filho / Banca: Giovanni Sampaio Gonçalves / Banca: Crispin Humberto Garcia Cruz / Mestre

Submitted by Lara Oliveira (lara@ufersa.edu.br) on 2017-08-11T22:21:29Z No. of bitstreams: 1 IsaacSASM_DISSERT.pdf: 690603 bytes, checksum: 64cb1ae31e9a367598deac43ea2cda2c (MD5) / Approved for entry into archive by Vanessa Christiane (referencia@ufersa.edu.br) on 2017-08-17T22:40:21Z (GMT) No. of bitstreams: 1 IsaacSASM_DISSERT.pdf: 690603 bytes, checksum: 64cb1ae31e9a367598deac43ea2cda2c (MD5) / Approved for entry into archive by Vanessa Christiane (referencia@ufersa.edu.br) on 2017-08-17T22:40:33Z (GMT) No. of bitstreams: 1 IsaacSASM_DISSERT.pdf: 690603 bytes, checksum: 64cb1ae31e9a367598deac43ea2cda2c (MD5) / Made available in DSpace on 2017-08-17T22:41:26Z (GMT). No. of bitstreams: 1 IsaacSASM_DISSERT.pdf: 690603 bytes, checksum: 64cb1ae31e9a367598deac43ea2cda2c (MD5) Previous issue date: 2015-02-27 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / The objective of this study was to evaluate the nutritional value of elephant grass silages with 33 the addition of residue of acerola. The design was completely randomized in five levels of 34 inclusion, 0; 5; 10; 15 and 20%, with four replications. The silos were opened with 90 days and 35 made the evaluations of NH3-N, sensorial analysis, pH, samples for chemical-bromatological 36 analysis and determination of the TDN. The DM, OM and EE were elevated in .54; .16 and .03 37 percentage points, respectively, for each 1% inclusion of the residue. The TC and pH presented 38 mean value respective 84.2% and 3.97, the pH was within the range to well preserved silage. 39 The NDF and HCEL have obtained reductions of 2.19 and 5.96% levels of 0-20% inclusion, 40 respectively. While elevations .19% for the ADF and .29% for the LIG every 1% waste 41 addition. The cellulose and TDN were presented minimum point of 12.5% inclusion and their 42 levels of 41.35 and 51.43%. To CP, IPND and IPAD, there were increases of 0.13% for each 43 1% inclusion of the residue for the three parameters. The TDN has presented minimum point 44 of 51.43% to the level of 12.4% inclusion. The N-NH3 of silages ranged from .47 to .79% from 45 levels 0-20% of inclusion of acerola. All silages were classified as "good to very good" 46 according to the nutritional and organoleptic characteristics. It is concluded that addition of the 47 acerola residue improved the nutritive value of silage fermentation characteristics evaluated 48 keeping their may be added to the 20% level / O objetivo deste estudo foi avaliar o valor nutricional de silagens de capim elefante com adição 9 do resíduo da acerola. O delineamento utilizado foi inteiramente casualizado em cinco níveis 10 de inclusão, 0; 5; 10; 15 e 20%, com quatro repetições. Os silos foram abertos com 90 dias e 11 feitas as avaliações do N-NH3, sensorial, pH, colhidas amostras para análise químico-12 bromatológicas e determinação do NDT. Os teores de MS, MO e EE foram elevados em 0,54; 13 0,16 e 0,03 pontos percentuais, respectivamente, a cada 1% de inclusão do resíduo. Os CT e pH 14 apresentaram valores médios respectivos de 84,2% e 3,97, o pH ficou dentro da faixa para 15 silagens bem conservadas. O FDN e Hcel obtiveram reduções de 2,19 e 5,96% dos níveis de 0 16 a 20% de inclusão, respectivamente. Enquanto que elevações de 0,19% para o FDA e 0,29% 17 para LIG a cada 1% de resíduo adicionado. A celulose e NDT apresentaram ponto mínimo de 18 12,5% de inclusão e teores respectivos de 41,35 e 51,43%. Para PB, PIDN e PIDA, houve 19 aumentos de 0,13% a cada 1% de inclusão do resíduo para os três parâmetros. O N-NH3 das 20 silagens variou de 0,47 a 0,79% entre os níveis de 0 a 20% de inclusão da acerola. Todas as 21 silagens foram classificadas em “boa a muito boa” de acordo com as características nutricionais 22 e organolépticas. Conclui-se que a adição do resíduo de acerola melhorou o valor nutritivo das 23 silagens avaliadas mantendo suas características fermentativas podendo ser adicionada até o 24 nível de 20% / 2017-08-11

Orientador: José Roberto Sartori / Resumo: Dois experimentos foram realizados com objetivo de avaliar a inclusão de diferentes níveis de resíduos de colheita de shiitake no desempenho produtivo e saúde de frangos de corte e de galinhas poedeiras comerciais. No experimento I, um total de 192 galinhas Lohmman® Brown foram alojadas em gaiolas. O delineamento experimental foi inteiramente casualizado, com quatro tratamentos (0,0; 1,0; 1,5 e 2,0% de inclusão de resíduo de colheita de shiitake na ração (RCS)) com 6 gaiolas por tratamento. Foram avaliados: consumo de ração, taxa de postura, peso de ovos, massa de ovos e conversão alimentar por dúzia e por massa de ovos; qualidade interna e externa de ovos e parâmetros reprodutivos e séricos. No experimento II, foram alojados 720 pintainhos da linhagem Ross 308, em galpão experimental, dividido em 24 boxes, sendo 31 aves por boxe, durante o período de 1 a 42 dias de idade. Os pintinhos foram distribuídos em delineamento experimental inteiramente casualizado, com quatro tratamentos (0,0; 0,15; 0,30 e 0,45% de inclusão de RCS). Avaliou-se o desempenho, viscosidade do conteúdo intestinal, titulação de anticorpos contra o vírus da doença de NewCastle, diferencial celular, histomorfometria intestinal e colesterol e triglicerídeos sanguíneos. Os dados foram analisados pelo procedimento GLM do Minitab 17. Os diferentes níveis de resíduo de colheita de shiitake na alimentação de galinhas poedeiras comerciais não afetaram os parâmetros de desempenho, qualidade dos ovos e os parametros... (Resumo completo, clicar acesso eletrônico abaixo) / Mestre

abstract: N-nitrosodimethylamine (NDMA) is a probable human carcinogen and drinking water disinfection by-product. NDMA forms as the product of reactions between chloramines and precursor compounds in water. This dissertation aims to provide insight into the removal of NDMA precursors, their nature, and a method to aid in their identification. Watershed-derived precursors accounted for more of and greater variability to NDMA formation upon chloramination than polymer-derived precursors in environmental samples. Coagulation polymers are quaternary amines, which have low NDMA yield but high use rates. Watershed-derived precursors were removed up to 90% by sorption to activated carbon, but activated carbon exhibited much less (<10%) sorption of polymer-derived precursors. Combined with literature NDMA molar yields of model anthropogenic compounds, where anthropogenic chemicals in some cases have NDMA yields >90% and biological compounds always have yields <2%, trace, organic, amine containing, anthropogenic chemicals were implicated as the most likely source of NDMA precursors in the watershed. Although activated carbon removes these precursors well, identification of individual compounds may result in more cost effective mitigation strategies. Therefore, I developed a method to isolate NDMA precursors from other organic matter into methanol to facilitate their identification. Optimization of the method resulted in a median recovery of NDMA precursors of 82% from 10 surface waters and one wastewater. The method produces 1,000X concentrated NDMA precursors and, in collaboration with the University of Colorado Center for Environmental Mass Spectrometry, time of flight mass spectrometry (TOF-MS) was performed on multiple treated wastewater and raw drinking water isolates. During TOF-MS, tertiary amines can cleave to form a neutral loss and an R group ion that is dependent on the original structure and I wrote a software program to “trawl” exported TOF-MS spectra for the diagnostic neutral loss resulting from fragmentation of tertiary amines. Methadone was identified as one new NDMA precursor that occurs at concentrations that form physiologically relevant levels of NDMA in surface water and wastewater. The approach used here to identify NDMA precursors is adaptable to other unknown disinfection by-product precursors given that a functional group is known that can 1)control sorption and 2)produce a predictable diagnostic fragment. / Dissertation/Thesis / Doctoral Dissertation Civil and Environmental Engineering 2015

Made available in DSpace on 2014-06-11T19:28:23Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-08-21Bitstream added on 2014-06-13T19:36:52Z : No. of bitstreams: 1 zanato_jaf_me_jabo.pdf: 287027 bytes, checksum: 031ba4a191aadab1915885a64325724d (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Objetivou-se avaliar a utilização do bagaço de cana-de-açúcar hidrolisado em substituição ao feno de alfafa, como fonte de fibra, para coelhos em crescimento. O feno de alfafa foi substituído pelo bagaço de cana-de-açúcar hidrolisado em 0, 25, 50, 75 e 100%. O delineamento experimental foi o inteiramente casualizado. Digestibilidade: 20 coelhos (45 aos 75 dias de idade). Não foram observadas diferenças entre as médias dos tratamentos para os coeficientes de digestibilidade. Desempenho, avaliação econômica e, parâmetros de carcaça e composição bromatológica da carne: 40 coelhos (35 aos 75 dias de idade). Não foram observadas diferenças entre as médias dos tratamentos para o desempenho zootécnico, no entanto, para a estimativa da receita líquida (R$) as substituições de 75 e 100% resultaram em maior receita. Para a composição bromatológica da carne, maior teor de matéria seca foi encontrado no tratamento com 100% de substituição e para proteína bruta os resultados não indicaram nenhuma tendência. Concluiu-se que a substituição do feno de alfafa pelo bagaço de cana-de-açúcar hidrolisado não trouxe prejuízo no aproveitamento energético e dos nutrientes da dieta, além disso, não inferiu sobre o desempenho zootécnico, mas trouxe algumas mudanças na composição bromatológica da carne. No entanto, o uso do bagaço resultou em maiores ganhos para o criador, sendo economicamente interessante seu uso como fonte de fibra em dietas para coelhos em crescimento. / The object was evaluate the use of hydrolized sugar cane bagasse in substitution of alfalfa hay, as fiber source, for rabbits in growth. The alfalfa hay was substituted by hydrolized sugar cane bagasse in 0, 25, 50, 75 e 100%. The experimental design was the completely randomized. Digestibility: 20 rabbits (45 to 75 days old). Diferences were not observed between the average of treatments for the digestibility coefficients. Performance, economic evaluation and, carcass parameters and bromathological meat composition: 40 rabbits (35 to 75 days old). Diferences were not observed between the average of treatment for the zootecnical performance, however, for the liquid proceeds estimative (R$) the substitution of 75 and 100% resulted in major proceeds. For the bromathological meat composition, was found a major dry matter content in treatmente with 100% of substitution and for the gross protein the results indicated no tendency. It was concluded that the substitution of alfalfa hay by hydrolized sugar cane bagasse did not affect negatively the energetic utilization and from the diet nutrients, besides, did not make any difference some changes in the bromathological meat composition. However, the use of bagasse resulted in major profits for the breeder, being its use as fiber source economically interesting in diets for rabbits in growth.

Made available in DSpace on 2014-06-11T19:24:45Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-03-11Bitstream added on 2014-06-13T19:11:25Z : No. of bitstreams: 1 sales_pjp_me_sjrp.pdf: 240966 bytes, checksum: f66abeba59133c3371d4cb5c6df50461 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / A proteína é um nutriente de elevado custo em rações para peixes, sendo importante a realização de pesquisas com o objetivo de avaliar fontes alternativas de proteína para reduzir o custo na alimentação. Para tal, é necessário caracterizar o produto quimicamente, bem como determinar o seu valor nutritivo. Este trabalho foi realizado com o objetivo de caracterizar quimicamente e avaliar o valor nutritivo da farinha de vísceras de avestruz na alimentação da tilápia-do-Nilo. Inicialmente, a farinha foi caracterizada quimicamente por meio das análises de matéria seca, energia bruta, proteína bruta, extrato etéreo, minerais (cálcio, fósforo), ácidos graxos e aminoácidos. Também foram avaliados os parâmetros de pH e acidez no 1º; 7º; 15º e 30º dia após a fabricação de farinha de vísceras, e realizado o teste de granulometria logo após sua fabricação. Os coeficientes de digestibilidade aparente da proteína, energia bruta, e fósforo da farinha para a tilápia-do-Nilo foram determinados pelo método modificado de Guelph, utilizando como indicador o óxido de cromo III (0,1%). A farinha de vísceras de avestruz é um alimento com elevado valor de energia e teores de proteína, minerais e ácidos graxos, além de possuir boa estabilidade oxidativa e microbiológica durante o armazenamento, com granulometria adequada para ser utilizada em rações para animais e boa fonte de energia e proteína para tilápia-do-Nilo / Protein is the most expensive nutrient in fish diet, and are important researches evaluating alternative sources to produce cost effectiveness diets. For this, it is necessary characterize its chemical composition and determine its nutritional value. This work was undertaken out to characterize chemically and evaluate the nutritive value of ostrich viscera meal for Nile tilapia. Initially, the viscera meal was chemically characterized in terms of dry matter, gross energy, crude protein, ether extract, minerals (calcium, phosphorus), fatty acids and amino acids. Data of pH and acidity were obtained from ostrich viscera meal at 1st, 7th, 15th and 30th days after manufacture, while the granulometry test was performed immediately after the manufacturing. The apparent digestibility of dry matter, protein, fat, calcium and phosphorus were obtained for Nile tilapia using the modified method of Guelph, using as an indicator chromium III oxide (0.1%). The production yield of ostrich viscera meal in relation to the fresh and dried viscera is 21.75%. The ostrich viscera meal has high amounts of energy, protein, minerals and fatty acids, and good oxidative and microbial stability during storage, with a particle size suitable to be used in animal feed and also good source of energy and protein for Nile tilapia