Abstract This article proposes to meet and to discuss a school territory, in the interior of the RS, in search of building a map. This construction runs through the field between the relationships and practices with/in school charting their routes already established and its deviations, between visibilities and invisibilities. It has as objectives to chart the possibilities of invention at school and how to explore the relationship of subjects with/in the school space. For it, is through cartography, research-intervention method, that the steps of this research are built, questioning implications, observations and interventions of the cartographer with the views and landscapes built. With this, it was possible to find analyzers - the gate, the circle and the circus - which enabled experience and to build these landscapes, filled with feelings, strengths and shapes, (re) created a map of the territory, (re) presented in the writing of this article. Finally, it is understood that it is necessary to leave the extremes and experience the “in-betweens” that configure and compose the territory. The researcher-cartographer who inhabits the field of psychology sought, from this production, a movement of concerns, leaving here the suggestion of moving away from such extremes. Listening to instituted modes, giving voice to instituting desires and being able to create between the two, allowing oneself to be an artist by inventing different modes of relationship(action) in the school territory

Resumen Este artículo se propone conocer y problematizar un territorio escolar, en el interior de RS, en busca de la construcción de un mapa. En esta construcción se recorre el campo entre las relaciones y prácticas con/en la escuela, mapeando sus caminos ya establecidos y sus desvíos, entre visibilidades e invisibilidades. Los objetivos son mapear las posibilidades de invención en la escuela y explorar las relaciones de los sujetos con/en el espacio escolar. Los pasos de esta investigación fueron construidos a través de la cartografía, un método de investigación-intervención, problematizando implicaciones, observaciones e intervenciones del cartógrafo con los paisajes vistos y construidos. Con ello, se encontraron analizadores -la puerta, el círculo y el circo- que permitieron experimentar y construir estos paisajes que, llenos de sentimientos, fuerzas y formas, (re)crearon un mapa del territorio, (re)presentaron en la redacción de este artículo. Finalmente, se entiende que es necesario salir de los extremos y experimentar los “entremedios” que configuran y componen el territorio. El investigador-cartógrafo que habita el campo de la psicología buscó, a partir de esta producción, un movimiento de inquietudes, dejando aquí la sugerencia de alejarse de tales extremos. Escuchar los modos instituidos, dar voz a los deseos instituyentes y poder crear entre los dos, permitiéndose ser artista inventando diferentes modos de relación (acción) en el territorio escolar.

Resumo Este artigo propõe-se a conhecer e problematizar um território escolar, do interior do RS, em busca da construção de um mapa. Nesta construção percorre-se o campo entre as relações e as práticas com/na escola, cartografando seus trajetos já estabelecidos e seus desvios, entre visibilidades e invisibilidades. Tem-se como objetivos cartografar as possibilidades de invenção na escola e explorar as relações dos sujeitos com/no espaço escolar. Os passos desta pesquisa foram construídos por meio da cartografia, método da pesquisa-intervenção, problematizando implicações, observações e intervenções da cartógrafa com as paisagens vistas e construídas. Com isto encontrou-se analisadores - o portão, o círculo e o circo - que possibilitaram experenciar e construir estas paisagens que, recheadas de sentimentos, forças e formas, (re)criaram um mapa do território, (re)apresentado na escrita deste artigo. Por fim, compreende-se que é preciso sair dos extremos e vivenciar os “entres” que configuram e compõem o território. A pesquisadora-cartógrafa que habita o campo da psicologia buscou, a partir desta produção, um movimento de inquietações, deixando aqui a sugestão de seguir-se fora de tais extremos, escutar-se os modos instituídos, dar voz aos desejos instituintes e poder criar entre os dois, permitindo-se ser artista ao inventar diferentes modos de rel(ação) no território escolar.

Abstract Red pitaya fruits have become a source of natural dye, because they are rich in betacyanin, a pigment that imparts a red-violet colour. However, natural dyes can be highly unstable and prone to rapid degradation. In this study, an experiment was initially carried out to determine the best extraction solution with an extraction time of 20 min for each solution at room temperature (50% methanol, water, 95% ethanol and 80% acetone), in different pH ranges (4.0 to 9.0) and wavelength (485, 535 and 700 nm), for the red pitaya bark. The stability of the pigments extracted from pitaya peel meal was analysed taking into account the best extraction solutions by spectrophotometric measurements at 15-day intervals, during a 60-day storage period, in the absence and presence of light and under different storage conditions. Pigments stored in the absence of light at freezing temperatures for less than 15 days showed least degradation. The FTIR spectrum in shows two distinct peaks at 3263.870 and 1636.807, these absorption bands are characteristic of betalain functional groups. The spectrum indicates the presence of hydroxy and amine groups as strong, broad, stretching-mode bands, appearing between 3200 cm-1 and 3600 cm-1.

Abstract This work aimed to study the effect of citric acid and passion fruit albedo concentrations and pulp/sugar ratio in optimizing of jam production process of Pouteria cf. gardneriana Radlk (guapeva fruit) and evaluating the nutritional characteristics and functional properties of the developed jams. A factorial design 23 with 11 assays was used, considering citric acid concentration, pulp/sugar ratio, and albedo concentration as independent variables. Formulations containing a 50/50 pulp/sugar ratio proved to be excellent for quality parameters, the potential of phenolic compounds, antioxidants, and sensory properties. The formulation indicated as most desirable was the one containing a 40/60 sugar/pulp ratio. Guapeva proved to be a good alternative for jam production because even after thermal processing, it was possible to obtain jams rich in Vitamin C, phenolic compounds, and antioxidant potential.

Abstract The guapeva (Pouteria cf. gardneriana Radlk.) is a Brazilian fruit that belongs to the Sapotaceae family and is considered a source of natural antioxidants and phenolic compounds; Thus, the objective of this work was to investigate the use of guapeva in the form of jam stored at different temperatures (25 °C and 35 °C) and to evaluate the degradation kinetics regarding the physicochemical parameters, bioactive compounds, and volatile profile, during the storage period of 150 days, in low-density polypropylene packaging’s. The stored jams were mainly influenced by the storage time variable, with significant reductions in titratable acidity, pH, color, vitamin C, carotenoids, ABTS●+, DPPH, and volatile profile. The temperatures studied were not able to significantly affect the shelf life determined for the jams; however, the best temperature for storage stability of the guapeva jams was 25 °C since the most significant degradation of the compounds occurs with the use of 35 °C. The correlation between time and temperature had no significant effect on carotenoid content.

OBJECTIVES: COVID-19 is a public health emergency of international concern whose detection in recovered asymptomatic patients is dependent on accurate diagnosis as it enables the estimation of the susceptibility of the population to the infection. This demand has resulted in the development of several commercial assays employing recombinant proteins, but the results of these assays are not reliable as they do not involve comparison with natural viral antigens. We independently used the SARS-CoV-2 whole viral antigen (WVA) and recombinant nucleocapsid protein (rNP) to develop in-house ELISAs for IgG detection; the results of these ELISAs were then compared to obtain reliable results. METHODS: WVA and rNP ELISAs were performed on COVID-19 negative sera from patients before the pandemic in Brazil, and on RT-qPCR-positive or SARS-CoV-2-IgG against rNP and IgG against WVA-positive samples from recently infected patients in Sao Paulo, Brazil. RESULTS: Both ELISAs detected a large fraction of infected patients but exhibited certain drawbacks. Higher signals and lower numbers of false-negatives were observed in rNP ELISA; however, a higher fraction of false-positives was observed in control groups. A high number of false-negatives was observed with WVA ELISA. Correlating the results of rNP and WVA ELISAs resulted in improved performance for COVID-19 diagnosis. CONCLUSION: The choice of antigen is an important aspect in optimizing the laboratory diagnosis of COVID-19. The use of rNP ELISA for the detection of anti-SARS-CoV-2 IgG antibodies seems promising, but comparison of the results with those of WVA ELISA is crucial for accurate test development prior to commercialization. IgG serology using several assays, and with the spectral patterns of SARS-CoV-2, resulted in confusing information that must be clarified before the establishment of diagnostic serology criteria.

BACKGROUND Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was confirmed in Brazil in February 2020, the first cases were followed by an increase in the number of cases throughout the country, resulting in an important public health crisis that requires fast and coordinated responses. OBJECTIVES The objective of this work is to describe the isolation and propagation properties of SARS-CoV-2 isolates from the first confirmed cases of coronavirus disease 2019 (COVID-19) in Brazil. METHODS After diagnosis in patients that returned from Italy to the São Paulo city in late February by RT-PCR, SARS-CoV-2 isolates were obtained in cell cultures and characterised by full genome sequencing, electron microscopy and in vitro replication properties. FINDINGS The virus isolate was recovered from nasopharyngeal specimen, propagated in Vero cells (E6, CCL-81 and hSLAM), with clear cytopathic effects, and characterised by full genome sequencing, electron microscopy and in vitro replication properties. Virus stocks - viable (titre 2.11 × 106 TCID50/mL, titre 1.5 × 106 PFUs/mL) and inactivated from isolate SARS.CoV2/SP02.2020.HIAE.Br were prepared and set available to the public health authorities and the scientific community in Brazil and abroad. MAIN CONCLUSION We believe that the protocols for virus growth and studies here described and the distribution initiative may constitute a viable model for other developing countries, not only to help a rapid effective pandemic response, but also to facilitate and support basic scientific research.

ABSTRACT OBJECTIVE: to identify elements that characterize the occurrence of moral harassment in reports of nursing professionals who have witnessed this practice; investigate feelings expressed by these professionals, when witnessing situations of harassment; and verify the coping strategies adopted before this phenomenon. METHOD: exploratory study with a qualitative and quantitative approach carried out at the outpatient clinic of a public hospital in the municipality of João Pessoa-PB, Brazil. The sample consisted of 25 professionals who were identified as witnesses of moral harassment in their professional practice. The empirical material was obtained through a semistructured form and then analyzed in light of the technique of discourse of the collective subject. RESULTS: relevant elements were found that characterize the studied phenomenon, such as the description of the aggressor of the practice of moral harassment, situations, duration and frequency of acts, and reports of examples and repercussions of harassment on the victims’ health. Feelings of sadness, anger and impotence were experienced by the witnesses. The main attitudes adopted as coping strategies consisted in giving guidance to the victim and communicating the facts to superiors. CONCLUSION: it was verified that the role of the witness in the identification of elements that characterize moral harassment is fundamental and allows the investigation of the behavior in the appropriate instances, the support to the victims, and the prevention of new cases.

RESUMEN OBJETIVO: identificar elementos que caracterizan el acoso moral en los relatos de profesionales de enfermería que presenciaron esta práctica; analizar sus sentimientos en dichas situaciones y buscar estrategias para afrontar tales hechos. MÉTODO: investigación exploratorio descriptiva, con enfoque cualitativo y cuantitativo, llevada a cabo em un hospital público de la ciudad de João Pessoa, PB, Brasil. La muestra consistió en 25 profesionales identificados como testigos de acoso moral en el ejercicio de sus tareas. El material empírico se obtuvo a través de un formulario semiestructurado, analizado según la técnica del discurso del sujeto colectivo. RESULTADOS: se encontraron elementos que caracterizan el fenómeno estudiado tales como: descripción del agresor de acoso moral, situaciones, duración y frecuencia de los hechos, relatos de ejemplos e impacto del asedio en la salud de las víctimas. Los testigos sintieron tristeza, rabia e impotencia. Las principales actitudes adoptadas como estrategias de afrontamiento consistieron en orientar a la víctima y comunicar el hecho a sus superiores. CONCLUSIÓN: se constató que el rol de testigo en la identificación de los elementos que caracterizan el acosos moral es fundamental y permite investigar la conducta en las instancias adecuadas, ayudar a las víctimas y prevenir nuevos casos.

RESUMO OBJETIVO: identificar elementos que caracterizam a ocorrência do assédio moral em relatos de profissionais de Enfermagem que já testemunharam essa prática; investigar sentimentos expressos por esses profissionais, ao presenciarem situações de assédio; e verificar estratégias de enfrentamento a esse fenômeno. MÉTODO: pesquisa exploratória com abordagem qualiquantitaviva, realizada no ambulatório de um hospital público no município de João Pessoa-PB, Brasil. A amostra foi composta de 25 profissionais que foram identificados como testemunhas de assédio moral em seu exercício profissional. O material empírico foi obtido por meio de formulário semiestruturado e, em seguida, analisado à luz da técnica do discurso do sujeito coletivo. RESULTADOS: foram encontrados elementos relevantes que caracterizam o fenômeno estudado, como descrição do agressor da prática do assédio moral, situações, duração e frequência dos atos, relatos de exemplos e repercussões do assédio na saúde das vítimas. Sentimentos de tristeza, raiva e impotência foram vivenciados pelas testemunhas. As principais atitudes adotadas como estratégias de enfrentamento consistiram em orientar a vítima e comunicar os fatos aos superiores. CONCLUSÃO: constatou-se que o papel da testemunha na identificação de elementos caracterizadores do assédio moral é fundamental e possibilita a apuração da conduta nas instâncias apropriadas, o apoio às vítimas e a prevenção de novos casos.

Objective: Work is considered one of the main forms of social organization; however, few individuals with schizophrenia find work opportunities. The purpose of this study was to evaluate the relationship between schizophrenia symptoms and job acquisition. Method: Fifty-three individuals diagnosed with schizophrenia from an outpatient treatment facility were included in an 18-month follow-up study. After enrollment, they participated in a prevocational training group. At the end of training (baseline) and 18 months later, sociodemographic, clinical data and occupational history were collected. Positive and negative symptoms (Positive and Negative Syndrome Scale – PANSS), depression (Calgary Depression Scale), disease severity (Clinical Global Impression – CGI), functionality (Global Assessment of Functioning – GAF), personal and social performance (Personal and Social Performance – PSP) and cognitive functions (Measurement and Treatment Research to Improve Cognition in Schizophrenia – MATRICS battery) were applied at baseline and at the end of the study. Results: Those with some previous work experience (n=19) presented lower scores on the PANSS, Calgary, GAF, CGI and PSP scales (p < 0.05) than those who did not work. Among those who worked, there was a slight worsening in positive symptoms (positive PANSS). Conclusions: Individuals with less severe symptoms were more able to find employment. Positive symptom changes do not seem to affect participation at work; however, this calls for discussion about the importance of employment support.

RESUMO O fibroedema geloide (FEG) é uma desordem dos tecidos dérmico e subcutâneo. Acomete 90% das mulheres após a puberdade. Vários fatores predisponentes interferem na sua ocorrência, entre os quais as alterações posturais. Para avaliação da postura e do FEG, a fotogrametria tem se mostrado um recurso confiável, de fácil aplicação, reprodução e de baixo custo. Avaliou-se se há correlação entre alinhamento pélvico e FEG na região glútea por meio da fotogrametria. Estudo do tipo transversal observacional, com 46 mulheres de 18-29 anos (média 23 anos±4,2 anos). Foi realizada avaliação postural pelo software de avaliação postural (SAPO) e calculado o ângulo entre as espinhas ilíacas anteros superiores direita e esquerda. O FEG foi classificado de acordo com a escala fotonumérica de Hexsel. As análises foram realizadas por dois avaliadores independentes e cegos, e foi utilizado o teste de correlação de Pearson. Obteve-se como resultado o valor médio do ângulo de desalinhamento pélvico de 1,70 (±1,46), o valor médio do FEG no glúteo direito de 6,30 (±4,01) e no esquerdo de 6,76 (±3,61). Não foi observada correlação entre o alinhamento pélvico e o grau de FEG na região glútea (p=0,38).

ABSTRACT The cellulitis is a disorder of dermal and subcutaneous tissues. It affects 90% of women after puberty. Several predisposing factors interfere with its occurrence such as postural impairments. Photogrammetry has been considered reliable, easy to use, reproducible and with low cost to assess posture and cellulitis. It was evaluated if there is correlation between pelvic alignment and cellulitis in the gluteal region by photogrammetry. This is an observational cross-sectional study with 46 women (18-29 years old, mean age 23 years ± 4.2). Posture was evaluated by the software SAPO and the angle between the right and left anterior superior iliac spineswas calculated. Cellulitis was classified according to Hexsel’s photonumeric scale. Analyses were performed by two independent and blinded evaluators and Pearson correlation tests investigated possible relationships between posture and cellulitis. The average value of the pelvic disalignment angle was 1.70 (+1.46), the mean value of the right gluteus cellulitis was 6.30 (+4.01) and left 6.76 (+3.61). There was no correlation between pelvic alignment and the level of cellulitis in the gluteal region (p = 0.38).

RESUMEN La dermopaniculosis vasculopática (DV) es un trastorno inflamatorio de los tejidos adiposo y subcutáneo. Un 90% de la población femenina presenta este trastorno tras la pubertad. Hay diversos factores que pueden desencadenar su aparición, entre ellos se destacan las alteraciones posturales. Un recurso fiable, de fácil aplicación, reproducción y bajo costo para evaluar la postura y la DV es la fotogrametría. En este estudio se pretende evaluar la presencia de correlación entre la alienación de la pelvis y la DV en la región glútea a través de la fotogrametría. Se trata de estudio de tipo transversal observacional, del cual participaron 46 mujeres de 18 a 29 años (promedio de 23 años ± 4,2 años). Se realizó la evaluación de la postura por intermedio del software de evaluación postural (Sapo) y se calculó el ángulo entre las espinas ilíacas anterosuperiores derecha e izquierda. La DV se clasificó según la escala fotonumérica Hexsel. Los análisis fueron realizados por dos evaluadores independientes y aleatorios, en los cuales se utilizó de la prueba de correlación de Pearson. Como resultado el promedio del valor del ángulo de desalienación de la pelvis fue de 1,70 (±1,46), el promedio del valor de la DV en el glúteo derecho fue de 6,30 (±4,01) y en el izquierdo 6,76 (±3,61). No se observó correlación entre la alienación de la pelvis y el grado de la DV en la región glútea (p=0,38).

RESUMO Objetivo: analisar as características definidoras e fatores relacionados ao diagnóstico de enfermagem excesso de volume de líquidos e sua relação com variáveis clínicas e sociodemográficas em pacientes em hemodiálise. Método: estudo transversal, desenvolvido com a utilização de um formulário e exame físico, com uma amostra de 100 pacientes, entre dezembro 2012 e abril 2013 em um hospital universitário e uma clínica de diálise. Resultados: dez associações estatisticamente significantes foram encontradas entre as características definidoras/fatores relacionadas ao excesso de volume de líquidos e as variáveis clínicas e sociodemográficas. Conclusão: as características definidoras e fatores relacionados ao excesso de volume de líquidos podem ser influenciados por variáveis clínicas e sociodemográficas em pacientes em hemodiálise.

ABSTRACT Objective: To analyse the defining characteristics and related factors in the nursing diagnosis Excess fluid volume and its relationship to sociodemographic and clinical variables in haemodialysis patients. Method: Cross-sectional study, conducted using a form and physical examination, with a sample of 100 patients, between December 2012 and April 2013 at a university hospital and a dialysis clinic. Results: It was found 10 significant statistical associations between the defining characteristics/ related factors of Excess fluid volume and the sociodemographic and clinical variables. Conclusion: The defining characteristics and related factors of Excess fluid volume could be influenced by sociodemographic and clinical variables in haemodialysis clientele.

RESUMEN Objetivo: analizar las características definitorias y los factores relacionados con el diagnóstico enfermero de exceso de volumen líquido y su relación con variables sociodemográficas y clínicas en pacientes de hemodiálisis. Método: estudio transversal, realizado mediante un formulario y examen físico, con una muestra de 100 pacientes, entre diciembre de 2012 y abril de 2013 en un hospital universitario y una clínica de diálisis. Resultados: se encontraron 10 asociaciones estadísticamente significativas entre las características definitorias, factores relacionados de volumen de exceso de líquido y las variables sociodemográficas y clínicas. Conclusión: las características definitorias y los factores relacionados de exceso de volumen líquido podrían estar influenciados por variables sociodemográficas y clínicas en clientes de hemodiálisis.

ABSTRACT Objective: To analyse the defining characteristics and related factors in the nursing diagnosis Excess fluid volume and its relationship to sociodemographic and clinical variables in haemodialysis patients. Method: Cross-sectional study, conducted using a form and physical examination, with a sample of 100 patients, between December 2012 and April 2013 at a university hospital and a dialysis clinic. Results: It was found 10 significant statistical associations between the defining characteristics/ related factors of Excess fluid volume and the sociodemographic and clinical variables. Conclusion: The defining characteristics and related factors of Excess fluid volume could be influenced by sociodemographic and clinical variables in haemodialysis clientele.

RESUMEN Objetivo: analizar las características definitorias y los factores relacionados con el diagnóstico enfermero de exceso de volumen líquido y su relación con variables sociodemográficas y clínicas en pacientes de hemodiálisis. Método: estudio transversal, realizado mediante un formulario y examen físico, con una muestra de 100 pacientes, entre diciembre de 2012 y abril de 2013 en un hospital universitario y una clínica de diálisis. Resultados: se encontraron 10 asociaciones estadísticamente significativas entre las características definitorias, factores relacionados de volumen de exceso de líquido y las variables sociodemográficas y clínicas. Conclusión: las características definitorias y los factores relacionados de exceso de volumen líquido podrían estar influenciados por variables sociodemográficas y clínicas en clientes de hemodiálisis.

RESUMO Objetivo: analisar as características definidoras e fatores relacionados ao diagnóstico de enfermagem excesso de volume de líquidos e sua relação com variáveis clínicas e sociodemográficas em pacientes em hemodiálise. Método: estudo transversal, desenvolvido com a utilização de um formulário e exame físico, com uma amostra de 100 pacientes, entre dezembro 2012 e abril 2013 em um hospital universitário e uma clínica de diálise. Resultados: dez associações estatisticamente significantes foram encontradas entre as características definidoras/fatores relacionadas ao excesso de volume de líquidos e as variáveis clínicas e sociodemográficas. Conclusão: as características definidoras e fatores relacionados ao excesso de volume de líquidos podem ser influenciados por variáveis clínicas e sociodemográficas em pacientes em hemodiálise.

RESUMO Objetivou-se avaliar consumo, digestibilidade, comportamento ingestivo e produção de leite de vacas F1 Holandês x Zebu alimentadas com dietas contendo casca de banana seca ao sol com ou sem adição de agentes químicos durante o processo de secagem. Utilizou-se dois quadrados latinos 4 x 4, compostos por quatro dietas, quatro animais e quatro períodos experimentais. As dietas foram formuladas para ser isoprotéicas, com relação volumoso:concentrado de 75:25. Os tratamentos consistiram de 20% de inclusão da casca de banana seca com ou sem adição de 2% de calcário ou 2% de óxido de cálcio, em substituição à silagem de sorgo, além da dieta sem casca de banana. Foram utilizadas oito vacas com 80 ± 10 dias de lactação ao início do experimento, que teve duração de 72 dias, divididos em quatro períodos de 18 dias, com 14 dias de adaptação e quatro dias de coleta de amostras e dados. A casca de banana com óxido de cálcio reduziu os tempos de ruminação e mastigação total e o número de bolos ruminados por dia. Todavia, não alterou as eficiências de alimentação e ruminação da MS e FDN. A utilização da casca de banana seca ao sol em 20% da dieta não altera produção de leite, com produção média de 16,88 kg de leite com 3,5% de gordura.dia-1. Entretanto, reduz a digestibilidade da MS e dos nutrientes, podendo limitar o ganho de peso dos animais. A utilização de aditivos na secagem da casca de banana não melhora o consumo e produção de leite.

SUMMARY The study purpose was to evaluate the intake, digestibility, ingestive behavior and milk production of F1 Holstein x Zebu cows fed with diets containing dried banana peel in the sun with or without addition of chemical agents during the drying process. We used two Latin squares 4 x 4, composed of four diets, four animals and four experimental periods. The diets were formulated to be isonitrogenious with forage to concentrate ratio of 75: 25. Treatments consisted of 20% inclusion of dried banana peel with or without addition of 2% of limestone or 2% of calcium oxide, replacing the sorghum silage, apart from free banana peel diet. Were used eight cows with 80 ± 10 days in milk at the beginning of the experiment, which lasted 72 days, divided into four periods of 18 days with 14 days for diet adaptation and four days of sampling and data collection. The banana peel with calcium oxide decreases rumination time, the total chewing time and the number amounts ruminated per day. However, it didn’t change the feed and rumination efficiencies of DM and NDF. The utilization of dried banana peel in the sun in 20% of the diet doesn’t alter milk yield, with average production of 16.88 kg of milk with 3.5% of fat.day-1. However, reduces DM and nutrients digestibility, which may limit the weight gain of the animals. The use of additives in banana skin drying does not improve the consumption and production of milk.

Objetivou-se por meio deste trabalho avaliar as características fermentativas de silagens de duas variedades de cana-de-açúcar com diferentes aditivos. O experimento foi conduzido no Departamento de Ciências Agrárias da UNIMONTES, Campus de Janauba-MG. Utilizou-se um delineamento inteiramente casualizado com esquema fatorial 2 x 5 + 2, sendo duas variedades de cana-de-açúcar (RB 86 7515 e IAC 86 2480) e cinco aditivos (ureia, NaOH, CaO, milho e Lactobacillus buchneri) com três repetições e um tratamento sem aditivo por variedade, com a abertura dos silos sendo feita aos 60 dias da ensilagem. Os aditivos NaOH e CaO propiciaram reduções nas perdas por gases e efluentes das silagens de cana-de-açúcar. A variedade IAC 86 2480 apresentou melhor índice de recuperação de matéria seca. Os aditivos NaOH e L. buchneri reduziram a atividade de água na variedade IAC 86 2480. O milho e L. buchneri propiciaram menores valores de pH. A adição de ureia elevou significativamente os valores de nitrogênio amoniacal. As silagens aditivadas com NaOH e CaO apresentaram elevados teores de ácido lático e baixos teores de etanol. Os teores de ácido acético em porcentagem da matéria seca foram elevados em todos os tratamentos. Já o ácido propiônico e o butírico encontram-se dentro da faixa ideal, para o processo fermentativo. A utilização dos aditivos NaOH e CaO resultou em uma silagem com boas características fermentativas e a melhor variedade para o processo de ensilagem foi a IAC 86 2480.

This work aimed to evaluate the fermentative characteristics silages of two varieties of sugar cane with different additives. The experiment was conducted in the Department of Agricultural Sciences of UNIMONTES, Janaúba Campus - MG. A completely randomized design with a factorial scheme of 2 x 5 + 2 was used, with two varieties of sugar cane (RB 86 7515 and IAC 86 2480) and five additives (urea, NaOH, CaO, corn and Lactobacillus buchneri), with three repetitions and one treatment without additive by variety, where the silos were opened 60 days after the ensiling. The additives NaOH and CaO promoted reductions in the losses by gases and effluents of the silages of sugar cane. The IAC 86 2480 variety showed better recovery rate of dry matter. The additives NaOH and L. buchneri reduced the water activity in the IAC 86 2480 variety. Corn and L. buchneri promoted lower pH values. The addition of urea significantly increased the amounts of ammonia nitrogen. The silages supplemented with NaOH and CaO showed high levels of lactic acid and low concentrations of ethanol. The concentration of acetic acid as a percentage of dry matter was high in all treatments. Propionic acid and butyric acid were within the ideal range for the fermentation process. The use of NaOH and CaO additives resulted in a silage with good fermentative characteristics and the best variety for the ensiling process was IAC 86 2480.