Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2012 ( 4 )

2011 ( 13 )

2010 ( 9 )

2009 ( 4 )

Custom range...

Search Results: 1 - 10 of 59 matches for " Coldebella "
All listed articles are free for downloading (OA Articles)
Page 1 /59
Display every page Item
Atividade antibacteriana de desinfetantes para uso na produ??o organica de aves
Jaenisch, Fátima Regina Ferreira;Kuchiishi, Suzana Satomi;Coldebella, Arlei;
Ciência Rural , 2010, DOI: 10.1590/S0103-84782010000200020
Abstract: efficient products in the disinfection that do not cause damages to the environment are a challenge for the organic poultry keeping. the antibacterial activity of four disinfectants was evaluated to per acetic acid, quaternary ammonium, sodium hypochlorite at 1% and 0,1% and the composed of organics acids (citric, lactic and ascorbic) against standard samples of escherichia coli, salmonella enteritidis and staphylococcus aureus in the presence and absence of organic matter, at two different temperatures and with 20 minutes of contact. organic acids were shown less effective in the presence of organic matter. however, the per acetic acid in the absence of this revealed most efficient against s. enteritidis and equally effective in the presence of organic matter, against s. aureus and e. coli showing a valid option for disinfection in the organic poultry keeping since preceded of careful cleanness.
Farelo de soja na alimenta??o de alevinos de jundiá (Rhamdia quelen)
Coldebella, Ivanir José;Radünz Neto, Jo?o;
Ciência Rural , 2002, DOI: 10.1590/S0103-84782002000300021
Abstract: the present study was conducted to evaluate different protein sources in practical diets for south american catfish fingerlings (rhamdia quelen). two experiments, lasting 42 days each one, were carried out by using 320 fishes with initial average weight of 1.18 ± 0.28grams and 4.00 ± 0.18 grams, respectively, distributed into 16 experimental units in a water recirculating system, where each experiment was tested with four treatments and four replications. in the first experiment, four isoproteic (34% crude protein) and isocaloric (3,500 kca/kg digestible energy) diets were tested. diet a1 contained sugar cane yeast, soybean meal, and meat and bone meal, while in the other diets (a2, a3 e a4) one of those sources was suppressed. diet a2 (sugar cane yeast and soybean meal) promoted the highest weight gain (p<0.01). the protein sources from diet a2 were used in a second experiment, where the effect of replacing sugar cane yeast with soybean meal at growing levels (75%, 87.5% e 100%) was tested on a diet (b1) containing the same levels of inclusion of both sources (36.4 %). diet b1 provided better growth and daily weight gain in this second feeding trial (p<0.01).
Métodos de conserva??o de amostras de leite para determina??o da contagem bacteriana total por citometria de fluxo
Cassoli, Laerte Dagher;Machado, Paulo Fernando;Coldebella, Arlei;
Revista Brasileira de Zootecnia , 2010, DOI: 10.1590/S1516-35982010000200029
Abstract: the objective of this study was to evaluate the effect of storage temperature and sample age on the total bacterial count (tbc) of milk samples preserved with azidiol to verify whether a single sample could be used to perform regulatory milk analysis under the normative instruction 51 (in-51). three hundred and twenty milk aliquots were used collected from an expansion tank to assess three storage temperatures (0 oc - frozen: 7 oc - refrigerated, and 24 oc - room temperature), three types of conservation (bronopol, azidiol and no preservative) and four sample ages (1, 3, 5, and 7 days). for the total bacteria count, refrigerated control samples, with azidiol and one day old samples, and for composition and somatic cell count (scc), the controls were defined as one day old refrigerated samples containing bronopol. samples conserved with bronopol presented lower total bacteria count than the control regardless of storage temperature and sample age. milk samples conserved with azidiol and stored refrigerated presented lower scc, regardless of age, compared to refrigerated samples conserved with bronopol. the fat and lactose contents decreased after the fifth day. two samples had to be collected: one for scc determination and composition containing bronopol and another for the total bacteria count containing azidiol. milk samples used for total bacteria count can be tested up to 7 days if they are kept at 7 oc with the addition of azidiol.
Segments of competition in south brazilian wineries
Miele, Marcelo;Coldebella, Arlei;Waquil, Paulo Dabdab;Miele, Alberto;
Scientia Agricola , 2007, DOI: 10.1590/S0103-90162007000300003
Abstract: the international restructuring process in the beverage sector reached the winemaking business in the 1990s, changing its panorama. increasing competitive pressure is a characteristic of this period with significant impact in regions such as the countries belonging to the mercosul block. to support firm strategies and public policies, the goal of this study was to identify the competition segments in winemaking in rio grande do sul, the southern state of brazil, and in a specific form to propose a typology of wineries based on the industrial organization literature. the data used are from the state wineries data bank of rio grande do sul, which were submitted to multivariate statistical analysis, integrating a cluster and principal components analysis in a group of 381 observations. the results showed the existence of two factors, one related to scale and diversification, and the other related to the quality of the products and of the raw material. from these factors, six groups of wineries were identified that can be named segments of competition in winemaking. group 1 is characterized by quality and specialization; group 2, by a large production scale and diversification; group 3, by a low added value; group 4, by a micro production scale; and groups 5 and 6, by a low added value, small scale, and specialization.
EFFECTIVENESS OF AN ODONTOLOGICAL EDUCATIVE PROGRAM APPLIED IN THE RURAL AREA OF ARARAQUARA (SP) Eficácia de um programa odontológico educativo aplicado na zona rural de Araraquara (SP)
Angela Cristina Cilense Zuanon,Elcilaine Rizzato Azevedo,Carmen Regina Coldebella
Revista Ciência em Extens?o , 1969,
Abstract: The objective of the educative programs is to improve buccal health. The more precocious they are carried through, the greater their benefits are. The family involvement is essential to be successful, since children, at very early age, are totally dependent on familiar habits. The aim of this study was to evaluate the knowledge level of mothers of children from 0 to 4 years old, inhabitants of the rural area in Araraquara city (SP), on prevention measures for the improvement of their children’s buccal health after an educative program. After seven years of program, an assessment through a questionnaire was made with 38 mothers who were taking part in this program. They answered, individually, questions about buccal hygiene. It was observed that 80% of the mothers carried through the buccal hygiene of their children, while 11% only supervised. The cloth diaper or gauze humidified in water was the most used means (59%), once the time of hygienic beginning occurred in 58% of the cases before the eruption of the first deciduous tooth. The toothbrush was cited by 20% of the mothers, which agrees with the 21% of the interviewed mothers who only initiated the brushing after the deciduous tooth eruption. Thus the conclusion is that educative odontological programs present satisfactory results when applied in long-term and that the professional must play the educator role, standing out to the parents the importance of prevention. Os programas odontológicos educativos buscam a promo o de saúde bucal e quanto mais precocemente forem realizados, maiores ser o seus benefícios. O envolvimento da família é essencial, já que crian as s o dependentes de hábitos familiares. Por meio da realiza o de programa de extens o universitário, este trabalho avaliou o conhecimento das m es de crian as de 0 a 4 anos de idade, moradoras na zona rural de Araraquara (SP), sobre medidas preventivas para promo o de saúde bucal de seus filhos. Transcorridos sete anos da aplica o do programa, foram abordadas 38 m es, participantes do projeto no momento da realiza o do estudo. Após a realiza o de um questionário sobre higiene bucal foi observado que 80% das m es realizavam a higiene bucal de seus filhos, enquanto 11% apenas supervisionavam. A fralda ou gaze umedecida foi o meio de higiene bucal mais utilizado (59%), uma vez que o inicio deste hábito ocorreu em 58% dos casos antes da erup o do primeiro dente decíduo. A escova dental foi utilizada por 20% das m es, o que vem ao encontro dos 21% das entrevistadas que iniciaram a escova o de seus filhos após a erup o dos dentes. Pode-s
Fatores associados à soroprevalência de Salmonella em rebanhos comerciais de suínos
Kich Jalusa Deon,Mores Nelson,Piffer Itamar Antonio,Coldebella Arlei
Ciência Rural , 2005,
Farelo de soja na alimenta o de alevinos de jundiá (Rhamdia quelen)
Coldebella Ivanir José,Radünz Neto Jo?o
Ciência Rural , 2002,
Abstract: O trabalho foi conduzido com o objetivo de testar diferentes fontes protéicas em dietas práticas para alevinos de jundiá (Rhamdia quelen). Foram realizados dois experimentos com dura o individual de 42 dias utilizando-se 320 animais com peso médio inicial de 1,18 ± 0,28 gramas e 4,00 ± 0,18 gramas, respectivamente, distribuídos em 16 unidades experimentais de um sistema com recircula o de água, testando-se quatro dietas com quatro repeti es em cada experimento. No primeiro experimento, testaram-se quatro dietas isoprotéicas (34% proteína bruta) e isocalóricas (3.500 Kca /kg de energia digestível) sendo que a dieta A1 continha levedura de cana, farelo de soja e farinha de carne e ossos, e nas demais (A2, A3 e A4) suprimiu-se uma das fontes. Alevinos alimentados com a dieta A2 (levedura de cana e farelo de soja) mostraram desempenho superior (P<0,01). No segundo experimento, utilizaram-se as fontes proteicas da dieta que proporcionou o melhor desempenho no experimento I (A2), e avaliou-se o efeito da substitui o da levedura de cana pelo farelo de soja em níveis crescentes (75%, 87,5% e 100%) a partir de uma dieta (B1) contendo os mesmos níveis de inclus o (36,4%) das duas fontes. A dieta B1 proporcionou um melhor crescimento e ganho de peso dos alevinos de jundiá (P<0,01).
Otimiza??o da técnica da PCR para a detec??o de Actinobacillus pleuropneumoniae
Souza, Karina Koerich de;Klein, Catia Silene;Kich, Jalusa Deon;Coldebella, Arlei;Alberton, Geraldo Camilo;
Ciência Rural , 2008, DOI: 10.1590/S0103-84782008000800023
Abstract: the use of molecular methods based on pcr is important in actinobacillus pleuropneumoniae detection, being able to identify the infection before the establishment of the disease in the herd. these methods have larger sensitivity when compared with traditional methods of bacteriological isolation, but they can suffer influence of substances that reduce the specificity of the test and resulting in inespecific amplifications. in order to reduce inespecific amplifications, observed when applied the pcr technique for the gene cpx in tonsil's tissue samples, the optimization was performed, in which different annealing temperatures were analyzed and introduced, in the technique, an antibody that binds to the enzyme taq dna polimerase, increasing its specificity. in parallel, an experiment was performed in order to verify the inhibiting effect of the tonsil's tissue on the pcr results. for that, portions of tonsil from animals negative to the a. pleuropneumoniae were artificially contaminated with the reference sample of the sorotype 5b. the addition antibody for the enzyme taq dna polimerase and the increase of the primers anneling temperature to 57°c reduced the inespecific amplifications. the results obtained in the experiment demonstrated a possible inhibiting effect of the tonsil's tissue in the pcr amplifications. besides, amplifications depend on at least 675 ufc present in the aliquot of samples that will be used in pcr (equivalent to 1.35 x 105 ufc ml-1), therefore, samples tissue's fragments in initial infections and/or with few cells can result in false-negative.
Fatores associados à soroprevalência de Salmonella em rebanhos comerciais de suínos
Kich, Jalusa Deon;Mores, Nelson;Piffer, Itamar Antonio;Coldebella, Arlei;Amaral, Armando;Ramminger, Lucas;Cardoso, Marisa;
Ciência Rural , 2005, DOI: 10.1590/S0103-84782005000200024
Abstract: a cross-sectional study was conducted with 65 finishing pig herds from the states of rio grande do sul and santa catarina, brazil, in order to identify factors associated with seroprevalence for salmonella. pig farms were visited one week prior to slaughtering of animals when personnel were asked to answer a questionnaire. feed was also sampled for attempts of salmonella isolation, water for colimetrics analisis and around 40 pigs were bled. feed samples were subjected to salmonella isolation in selective media and sera were tested in an elisa, plates were coated with antigens of serovar typhimurium. herds were classified in one of three categories according to the prevalence of elisa positive sera, being low (less then 40% of positive sera), medium (between 40 and 70% positive sera) or high (more then 70% positive sera). seroprevalence was used as the explanatory variable and results obtained from the attempts to isolate salmonella from feed, water colimetrics results and the questionnaire answers were used as explanatory variables. initially, attempts of association between explanatory and explained variables were performed using the chi-square test. when associated (p£0.1), the two variables underwent multiple correspondence analysis. factors associated with herds having high seroprevalence were: in finishing herds, pelleted feed, swine manure disposal less than 100m from surface water, feeder not provided with water drinker, swine from several herds transported together to slaughterhouse; in the farrow-to-finish herds, feed ingridients exposure to other animals, no active rodent control, dry feed, absence of fence, whitewashing of facilities after cleaning and disinfecting and permission for other people entrance to the herd. among the 65 pig herds visited, 98.5% were elisa-positive, with seroprevalence of 57.6% (confidence interval 56 to 60%).
Indicadores do ambiente ruminal e suas rela??es com a composi??o do leite e células somáticas em diferentes períodos da primeira fase da lacta??o em vacas de alta produ??o
Campos, Rómulo;González, Félix;Coldebella, Arlei;Cardoso, Felipe;
Ciência Rural , 2006, DOI: 10.1590/S0103-84782006000200025
Abstract: in the current international milk payment system, where the quality is the main factor; two fundamental aspects have acquired great importance: the somatic cells count and the amount of total solids. the first one depends on the health of the mammary gland and the second factor, which has more economic impact for the dairy industry, is directly related to feeding management and the cattle breed. the environment of the rumen can modify the composition of the milk, specially the fat percentage. the main source of protein in the ruminants depends on the synthesis of protein in the rumen. the current feeding systems used in high-yielding dairy cows, predispose them to the outcome of metabolic syndromes that directly or indirectly affect the milk production. the purpose of this study was to establish a relation between the index of the rumen environment (methylene blue reduction time and ph) and urinary ph with the composition of the milk and the somatic cells count. none statistical relation was found among the parameters evaluated. the average values of non fat solids in this study were below the official values approved in brazil.
Page 1 /59
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.