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Artigos Científicos - INEAF

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Acesso aberto (Open Access)
Água e saúde no município de Igarapé-Açu, Pará
(Universidade Federal do Pará, 2016-12) SOUSA, Rafaela Sales de; FELIZZOLA, Juliana Feitosa; FIGUEIREDO, Ricardo de Oliveira; SÁ, Tatiana Deane de Abreu; GUERRA, Gutemberg Armando Diniz; MENEZES, Luciana Gonçalves Creão de
This article aims to analyze and understand the relationship between water and health in rural communities located in the watershed of Cumaru stream, in the municipality Igarapé-Açu, Northeast of Pará state. The harvesting and treatment of the water conducted by the rural population for human consumption were assessed, considering their practices of sanitary sewer, since these aspects have direct impact on their health. This study is based on field research with a quantitative approach. Closed questionnaire was used to raise the sources of water harvesting, rural sanitation, and use of agricultural inputs. We used participant observation, when focusing on the functioning of the agricultural establishment, to observe from various angles the relationship between water and health. We noted that the vulnerability of the water resources accessed by the population is a factor that contributes to the contamination of the sources, therefore a threat to the health of the rural population. However, the perception of the population is notable regarding deeper water sources, such as tube wells, which are priorities for water harvesting.
Acesso aberto (Open Access)
Interação genótipo-ambiente em rebanhos nelore da Amazônia Legal
(Universidade Federal do Pará, 2013-09) MATOS, Amanda de Sousa; SENA, Josynélia do Socorro da Silva; MARCONDES, Cíntia Righetti; LÔBO, Raysildo Barbosa; RORATO, Paulo Roberto Nogara; CUCCO, Diego de Córdova; ARAÚJO, Ronyere Olegário de; BEZERRA, Luiz Antonio Framartino
Genotype-environment interaction was studied by two different procedures in productive and reproductive traits of Nellore cattle. Data from adjusted weights at 120 (P120), 210 (P210), 450 (P450) days of age, scrotal circumference at 450 days of age (PE450) and age at first calving (IPP) for 211,744 records from Nellore herds located in the Legal Amazon region were used in the analysis. The effect of genotypeenvironment interaction was studied through heritability estimates and rank correlation, comparing the Legal Amazon animals with the general basis of animals – PMGRN Nellore Brazil. Bi-trait analyses considered P120 as anchor-trait with P210, P450 and PE450 as another one. IPP has been analyzed separately in single-trait analysis and considering GCIPP as fixed and additive and residual effects as random. Estimates of heritability for P120, P210, P450, PE450 and IPP on the data of the Legal Amazon were: 0.20 to 0.49; 0.21; 0.48; 0.45; and 0.21, respectively, and in general data of PMGRN – Nellore Brazil were: 0.23; 0.25; 0.34; 0.43 and 0.11, respectively. Correlations between rank for P120, P210, P450, PE450 and IPP were equal to 0.77; 0.79; 0.82; 0.78 and 0.38, respectively. The analysis of the genotypeenvironment interaction, through the heritability estimates, showed larger effects on maternal, weight at 450 days of age and age at first calving, whereas the rank correlations showed strong evidence in almost all traits studied.
Acesso aberto (Open Access)
Segmentation of the buffalo meat consumer market in Belém, Pará, Brazil
(Universidade Federal do Pará, 2016-06) MARQUES, Cristiane Soares Simon; OAIGEN, Ricardo Pedroso; MORAES, Carina Martins de; SANTOS, Marcos Antônio Souza dos; LOURENÇO JÚNIOR, José de Brito; BEZERRA, Isis Abel
The objective of this study was to identify different market segments for buffalo meat with target groups defined in the city of Belém, Pará, Brazil. Paired samples of beef and buffalo meat were given to 447 volunteers, and a sensory analysis of the products was conducted. After the tasting, a questionnaire was administered to obtain demographic (age, educational level, marital status) and economic (household income) data as well as information on the habits of respondents and preferences regarding buffalo meat. The factors were estimated using the principal components method and the factors with characteristic roots greater than one were extracted. To check the suitability of the factorial model, Bartlett’s sphericity test and the Kaiser-Meyer-Olkin (KMO) test were used. A factor analysis was performed, identifying five factors with common variability dimensions. The study has helped identify four distinct market segments which, combined with a targeted marketing strategy, can be used to leverage the productive chain: I - Young and interested, II - Mixed and indifferent, III - Graduates and successful, and IV - Healthy women. All had positive responses to buffalo meat; clusters I and III stood out with regard to several indicators, especially those related to the preference for buffalo meat and the predisposition to purchase and include it in meals. The sensory analysis indicated that consumers showed a greater acceptance of buffalo meat based on the characteristics of flavour, colour, succulence and tenderness. The study helps to identify market segments with distinct features that, combined with a targeted marketing strategy, can be used to leverage the supply chain.
Acesso aberto (Open Access)
Propriedades físicas do solo e sistema radicular do cacaueiro, da pupunheira e do açaizeiro na Amazônia oriental
(Universidade Federal do Pará, 2012-10) MARTINS, Paulo Fernando da Silva; AUGUSTO, Sebastião Geraldo
The knowledge on the relationship between roots of crop plants and soil physical properties is very important. This article evaluates the distribution of the root systems of cocoa, palm peach and açai and their relationships with the soil physical properties. The research was carried out in an alic Yellow Latosol and root and soil samples were obtained from 10 cm to 40 cm depth. The experiment was arranged in a randomized block in the factorial design (four depth soils and three root class), with four replications. The açai root amount is twice of the palm peach and ten times more that of cacao. No difference was verified in the amount of roots of peach between the distances of the plants. The roots were collected in two distances of the plant stem in monolith samples and separated in three diameter class: < 1.0 mm, 1.0-3.0 mm e > 3.0 mm. The roots amount of the three plants was directly correlated with the coarse sand content and inversely correlated with clay content and bulk density. The large pores size was also directly correlated with the amount of cacao and açai roots in the three classes of diameter. The açai showed the most abundant root system and it the greatest number of correlations between the amount of roots and the physical properties of soil involving the three diameter root classes.
Acesso aberto (Open Access)
Age of Eucalyptus urograndis plantations and occurrence of pest insects
(Universidade Federal do Pará, 2016-10) ANDRADE, Joana Gabriela Freitas; SÁ, Veríssimo Gibran Mendes de; SPACEK, Sara Lodi de Carvalho Spacek; GODOY, Bruno Spacek
Eucalyptus species are originally from Australia and its plantations is the major forestry activity in Brazil. The Myrtaceae family is widely represented in Brazil, enabling native insects to migrate to Eucalyptus plants. Native herbivorous insects may adapt to the species planted in monoculture with low availability of their natural host plants and natural enemies. Within this context, the differential occurrence pattern of eleven insect pests of Lepidoptera, Coleoptera and Hemiptera orders, from 450 Eucalyptus stands of different ages recorded in 2002 to 2010 in eastern State of Minas Gerais, Brazil was evaluated. Bayesian inference was used for data analyses in hypothesis testing. The probability of occurrence of pest species was estimated using a linear multinomial model, relating their occurrence with the Eucalyptus stand age. Pest occurrence in Eucalyptus stands were linked to plant age, with younger ones being more susceptible to phytophagous insects. That association with chronological plant age may be associated with the resource exploration strategy of each group of pest insects. Thus, Eucalyptus forest management should be adapted to the temporally differential use of the stands by pest species, providing more efficient control strategies.
Acesso aberto (Open Access)
Each person has a science of planting: plants cultivated by quilombola communities of Bocaina, Mato Grosso State, Brazil
(Universidade Federal do Pará, 2017-06) SANTOS, Thais Aparecida Coelho dos; BARROS, Flávio Bezerra
(Each person has a science of planting: plants cultivated by quilombola communities of Bocaina, Mato Grosso State, Brazil). The objective of this study was to record the most important vegetal resources in the life of the quilombolas of Bocaina, emphasizing the practices of agrobiodiversity management. We used semi-strutured and informal interviews, free list, and participant observation. For records, we used a field diary, photos, and recordings. For analysis, we performed calculations of absolute and relative frequencies, linear regression analysis to verify relations between age and species richness, Detrended Correspondence Analysis (DCA), and diversity profile. We recorded a total of 180 species, of which, the most cited plants were food crops cultivated in backyards and clearings. Ninety-seven medicinal species used for various diseases were recorded. The most common form of use is leaf tea. We verified that the plants management is of agroecological character favoring biodiversity maintenance. We concluded that the Community, by means of its traditional knowledge, performs agroecological management of the plants, promoting food security for its family and conservation of genetic resources.
Acesso aberto (Open Access)
Estabelecimento a campo de mudas de Eucalyptus grandis micorrizadas com Pisolithus microcarpus (UFSC Pt 116) em solo arenoso
(Universidade Federal do Pará, 2009-06) MELLO, Andréa Hentz de; ANTONIOLLI, Zaida Inês; KAMINSKI, João; SOUZA, Eduardo Lorensi de; SCHIRMER, Guilherme Karsten; MACHADO, Rafael Goulart; LUPATINI, Manoeli; MORO JÚNIOR, Carlos
The aim of this work was to evaluate the survival and the initial growth of mycorrhizated eucalypts with Pisolithus microcarpus (UFSC Pt 116) ectomycorrhizal fungus, after its transplant to area subject to the arenization process in São Francisco de Assis, RS. The area was divided into four blocks, each one with four treatments (fertile turf with and without mycorrhizae, Quartzarenic Neosoil with and without mycorrhizae). Each parcel was composed of 16 seedlings arranged in four lines in the spacing of 1,5 m x 1,5 m, totalizing in each block 64 seedlings. 90 days after the planting in the field, the eucaliptus seedlings produced in turf with fungus in the fertile substratum presented a survival rate of 100 %, whereas for those produced in fertile turf without fingi, the survival rate was 92 %. The seedlings produced in the Quartzarenic Neosoil with and without mycorrhizae had a survival rate varying around 98 and 89 %, respectively. The produced seedlings with turf and fungus showed significant differences in height and stem diameter. This study showed that the Eucalyptus grandis seedlings produced in substratum fertile turf and inoculated with the Pisolithus microcarpus (UFSC Pt 116) isolated may maintain good development and establishment in the field.
Acesso aberto (Open Access)
Estrutura e produtividade de capim-tanzânia submetido a diferentes frequências de desfolhação
(Universidade Federal do Pará, 2017-05) MACEDO, Vitor Hugo Maués; CUNHA, Antonio Marcos Quadros; CÂNDIDO, Ebson Pereira; DOMINGUES, Felipe Nogueira; MELO, Deyvid de Menezes; RÊGO, Aníbal Coutinho do
The objective of the present study was to evaluate the effect of different frequencies of defoliation at fixed periods on the structural and productive characteristics of Tanzania grass (Panicum maximum) under Am climate conditions in 2014. The experimental design was in complete randomized blocks with six treatments corresponding to six frequencies of defoliation (14, 21, 28, 35, 42, and 49 days) and five repetitions. The data was submitted to regression analysis. The light interception (LI) increased (P <0.05) in an asymptotic way with increasing rest periods. The maximum light interception was 98% and occurred at 42 days of regrowth. The leaf area index (LAI) and the dry matter accumulation increased (P <0.05) linearly varying from 3.6 to 7.1 and from 880.3 to 4051.7 kg.ha-1 of forage dry matter in the frequencies 14-49 days, respectively. The height ranged 44-119 cm at frequencies 14-49 days, respectively. The frequency of defoliation at 95% LI is related to the rest period of 29 days, where the Tanzania grass canopy presented around 63 cm height, critical LAI of 5.1, and forage dry matter accumulation of 2,160 kg ha-1.
Acesso aberto (Open Access)
Comunidades tradicionais em áreas litorâneas da Amazônia: estudo sobre desenvolvimento local em Vila Mota, Pará, Brasil
(Universidade Federal do Pará, 2014-04) PINHEIRO, José Olenilson Costa; DARNET, Laura Angélica Ferreira
The paper presents the socioeconomic dimension in Vila Mota, municipality of Maracanã, state of Pará, and its repercussion in the local development process, understood as the fulfillment of basic human needs. Vila Mota is a community of traditional fishing located in the Reserva Extrativista Marinha de Maracanã (marine extractive reserve). The conditions of life in this community were observed and analyzed according to some indicators that make up the Human Development Index (HDI) and its variants. Limiting and enhancer factors for local development were also identified. The survey was carried out in 2007 and took into account 72 families representing 48% of the total available. The results indicated that housekeeping was impaired in families that have developed small-scale fishing as the only productive activity, given that the monetary income for 62.5% of these families was less than a minimum wage. The conditions of education and natural resources were enhancer factors to the development, although the most part of inhabitants did not know the purposes of the marine reserve. The absence of a cooperative culture, the lack of a structure for production, transportation and marketing, and the disability of health services were evidences of a low capacity for socio-political organization, with direct impact on local development.
Acesso aberto (Open Access)
Do avortado ao comprado: práticas alimentares e a segurança alimentar da comunidade quilombola do baixo Acaraqui, Abaetetuba, Pará
(Universidade Federal do Pará, 2016-04) NASCIMENTO, Elcio Costa do; GUERRA, Gutemberg Armando Diniz
This research presents the analysis of different strategies of Food and Nutritional Security (SAN) developed by the families of the Quilombola Community of baixo Acaraqui, Abaetetuba, Pará. The community is facing changes in their eating habits due the reduction of natural resources (hunting animals, fish and shrimps), decrease of the area for agricultural production and increase of the commercial value of production. Using a qualitative approach and the following procedures: participant observation, semi-structured interviews, photographic record, itemized lists and workshops on eating habits, we investigated the community and their production and food practices. We observed a higher specialization of production, decreasing the diversity of local production and of the families’ self-sufficiency; increasing in the importance of extraction of açaí as an income generator; substitution of natural products (natural juices, teas) for industrial products (coffee, soda); increase in purchasing power, stimulated both by market trades and the social benefits received (bolsa família, pension and seguro defeso). This reality has significantly influenced the production practices and eating habits of the local families, interfering with production decisions and food acquisition, making families dependent on trade and income generation in order to ensure the SAN of the quilombola families.
Acesso aberto (Open Access)
Uso medicinal da pimenta malagueta (Capsicum frutescens L.) em uma comunidade de várzea à margem do rio Amazonas, Santarém, Pará, Brasil
(Universidade Federal do Pará, 2011-12) ROMAN, André Luís Cote; MING, Lin Chau; ARAUJO, Izabel Carvalho de; SABLAYROLLES, Maria das Graças Pires
An ethnobotanical study was carried out for this study aimed at understanding the medicinal importance of malagueta / chili pepper (C. frutescens L.) in the daily life of the people of Cabeça D'Onça, an area in the Amazon River floodplain. The community of approximately 330 residents is situated in the municipality of Santarém, Pará State. In total, 116 people from 70 households were interviewed for this work. Information regarding the medicinal uses of these peppers was collected in semi-structured interviews and compiled in detail. In the second phase of the study, structured interviews were carried out in 40 households with 80 people (40 couples) to determine the most commonly-known uses of the peppers in the study area. Over 50% of those interviewed cited the use of the malagueta in curing certain illnesses reputed to be caused by contact with water from the Amazon River, including 'pano-branco', and 'impinge' (both diseases of the skin treated with the leaves) and rheumatism (treated with the fruit). A comparison of the data obtained in this study with published literature reveals strong indigenous influence in their medicinal use.
Acesso aberto (Open Access)
Caçar, preparar e comer o ‘bicho do mato’: práticas alimentares entre os quilombolas na Reserva Extrativista Ipaú-Anilzinho (Pará)
(Universidade Federal do Pará, 2016-12) FIGUEIREDO, Rodrigo Augusto Alves de; BARROS, Flávio Bezerra
Hunting of wild animals has played a significant role in the physical and symbolic reproduction of rural families living in various tropical regions of the planet. Indeed, many dimensions of using cynegetic resources as a source of human food have not been sufficiently studied, yet, above all from the viewpoints of Anthropology and Ethnoecology. Such dimensions are often overlooked in biodiversity conservation interventions. This article aims to analyze the use of wild animals in feeding practices among families in the quilombola community of Joana Peres, located in the Extractive Reserve Ipaú-Anilzinho, a conservation unit within the municipality of Baião, Pará, Brazilian Amazon. We conducted the study by using Ethnoecology postulates. We highlight elements having a social and cultural nature that guide the procedures for obtaining, preparing, and eating food through the cynegetic activity. We employed the methods of participant observation and semi-structured and open interviews. We interpret data both qualitatively and quantitatively. Particularly, for each of the species mentioned we seek to calculate the index of Use Value (UV), which allows to demonstrate the degree of relative importance of locally known species. The study has shown that the cynegetic activity involves both nutritional and socio-cultural aspects, since wildlife resources provide protein and the dietary practices are permeated by various processes including habits, imaginary, sociability, taboos, and preparation modes.
Acesso aberto (Open Access)
Composição bromatológica e cinética da fermentação ruminal de rações contendo resíduos de babaçu
(Universidade Federal do Pará, 2014-03) SOUSA, Luciano Fernandes; MACEDO JUNIOR, Gilberto de Lima; SANTOS, Rogério Pereira dos; SILVA, André Guimarães Maciel e; BORGES, Iran
The objective of the experiment was to demonstrate the bromatological composition, and evaluate the fermentation kinetics and effective ruminal degradability in vitro, using the "Hohenheim Gas Test" technique, of babassu mesocarp flour I® and II® (FMBI and FMBII) and of feeds at different levels of inclusion. Two trials were carried out: one of pure byproducts and corn, and another of feeds with inclusions of FMBI and FMBII in the following proportions: 0, 7.5, 15.0 and 22.5% of the total dry matter. The experimental design was of randomized blocks, with six blocks in the first trial and five in the second. Measurement times for the gases produced were 3, 6, 9, 12, 24, 48, 72 and 96 hours. The FMBI and FMBII flours showed different bromatological composition for the fibre components (FDN, FDA and Lignin). The FMBI and FMBII flours also showed patterns for fermentation kinetics inferior to the fermentation patterns of corn grain. Increasing the ratio of FMBI and FMBII in the feed reduces gas production for time of incubation. In view of the above, it can be said that mesocarp flours I and II, despite being sources of starch, did not present ruminal fermentation similar to corn grain, the standard source of starch.
Acesso aberto (Open Access)
Carbon content in Amazonian Oxisols after forest conversion to pasture
(2009-12) SILVA JÚNIOR, Mário Lopes da; DESJARDINS, Thierry; SARRAZIN, Max; MELO, Vânia Silva de; MARTINS, Paulo Fernando da Silva; SANTOS, Elaine Rodrigues; CARVALHO, Claudio Jose Reis de
Soil plays an important role in the C cycle, and substitution of tropical forest by cultivated land affects C dynamic and stock. This study was developed in an area of expansion of human settlement in the Eastern Amazon, in Itupiranga, State of Pará, to evaluate the effects of native forest conversion to Brachiaria brizantha pasture on C contents of a dystrophic Oxisol. Soil samples were collected in areas of native forest (NF), of 8 to 10 year old secondary forest (SF), 1 to 2 year old SF (P1–2), 5 to 7 year old SF (P5–7), and of 10 to 12 year old SF (P10–12), and from under pastures, in the layers 0–2, 2–5 and 5–10 cm, to evaluate C levels and stocks and carry out separation of OM based on particle size. After deforestation, soil density increased to a depth of 5 cm, with greater increase in older pastures. Variation in C levels was greatest in the top soil layer; C contents increased with increasing pasture age. In the layers 2–5 and 5–10 cm, C content proved to be stable for the types of plant cover evaluated. Highest C concentrations were found in the silt fraction; however, C contents were highest in the clay fraction, independent of the plant cover. An increase in C associated with the sand fraction in the form of little decomposed organic residues was observed in pastures, confirming greater sensitivity of this fraction to change in soil use.
Acesso aberto (Open Access)
Babaçu livre e queijo serrano: histórias de resistência à legalização da violação a conhecimentos tradicionais
(2014-06) PORRO, Noemi Sakiara Miyasaka; MENASCHE, Renata; SHIRAISHI NETO, Joaquim
This article is about experiences carried out by communities whose ways of life generate and sustain traditional knowledge, in contexts of incorporation of international conventions into the Brazilian juridical system. Case studies on babaçu breaker women, in the State of Maranhão, and Serrano Cheese producers, in the State of Rio Grande do Sul, reveal the meanings of the tradition imbued in the knowledge to be protected. Empirical data analyzed under juridical and anthropological perspectives elicit, in spite of the apparent progress in the legislation, threats to multiple dimensions of ways of life grounded on traditional territories. Without effective, immediate and integral application of the ILO Convention 169, current initiatives of implementation of conventions and laws related to traditional knowledge may have opposite results. We conclude that traditional communities resist illegal appropriation of their knowledge, while interested private sectors search for the support of the rule of law to legitimize plundering.
Acesso aberto (Open Access)
Mobilidade de camponeses entre assentamentos de reforma agrária: territorialidades em cheque no desenvolvimento local da Transamazônica, Pará, Brasil
(2015-06) SANTOS, Ione Vieira dos; PORRO, Noemi Sakiara Miyasaka; PORRO, Roberto
The article discusses the role of turnover of peasant families at agrarian reform settlements for the local development of the Transamazon region in the State of Pará. Analysis of local practices and narratives in the context of land and environmental policies evidences that their current implementation is not consistent with processes of territorialization designed by so-called beneficiaries of land reform.
Acesso aberto (Open Access)
Does body size of neotropical ant species influence their recruitment speed?
(2013-03) GODOY, Bruno Spacek; CAMARGOS, Lucas Marques de
Ants are one of the most important animal groups in tropical forests because of its abundance and number of species. An important characteristic of the group is the eusociality, which allows the occurrence of a recruitment behavior when food resource is found. However, there are two main questions regarding this behavior: (i) the recruitment is a product of environmental or phylogenetic pressures, and (ii) the recruitment speed is related to the body size of the ant species. In this work we addressed these two questions using 17 species of neotropical ants, in the Amazonic lowland dense rain forest. According to results, recruitment behavior is related to ant size, where smaller species exhibit this trait when finding a protein resource. However, species size is not important in recruitment speed, which suggests that speed can be best explained by the type of food resources needed in the ant colony.
Acesso aberto (Open Access)
Estimação de parâmetros genéticos para características produtivas em búfalos na Amazônia Oriental
(2010-06) RODRIGUES, Alessandra Epifanio; MARQUES, José Ribamar Felipe; ARAÚJO, Cláudio Vieira de; CAMARGO JÚNIOR, Raimundo Nonato Colares; DIAS, Lilian de Nazaré Santos
Data from 1,182 records of Murrah females buffaloes and their crossbreds, calving from 1967 to 2005, were used to estimate genetic parameters by maximum restricted likelihood method. An animal model used to estimate variance components, included the fixed effects of herds, year and season of calving, order of parity, and length of lactation as covariables; and random effects of animal, permanent, and temporary environment. The estimate of heritability to milk yield, fat yield, length of lactation, and milk yield per day of calving interval were 0.25, 0.18, 0.08, and 0.09 respectively. Estimate of repeatability for milk yield, fat yield, and length of lactation were 0.33, 0.29, and 0.10, respectively. The genetic correlations between milk yield and fat yield, milk yield and length of lactation, milk yield and milk yield per day of calving interval, fat yield and length of lactation, fat yield and milk yield per day of calving interval, and length of lactation and milk yield per day of calving interval were 0.93, 0.76, 0.99, 0.89, 0.87, and -0.27, respectively. These results showed that genetic gains may be obtained by selecting to milk and fat yields.
Acesso aberto (Open Access)
Cultivo de larvas de Ucides cordatus (LINNAEU, 1763) sob diferentes intensidades luminosas
(2014-10) COTTENS, Kelly Ferreira; SILVA, Ubiratã de Assis Teixeira da; VENTURA, Robson; RAMOS, Fabrício Menezes; OSTRENSKY, Antonio
Ucides cordatus is an edible crab species typical of Brazilian mangroves, and traditionally represents an important economic resource for many coastal populations. The present study investigated the influence of light intensity on the survival and rate of larval development of U. cordatus. Three different levels of luminosity were evaluated: 710 (Light), 210 Lux (Shaded) and 1 Lux (Dark), both in individual and collective cultivation conditions. Significant differences were found for survival of zoea larvae under the different light intensities (P<0.05). The greatest survival rates as well as rates of ecdysis to the megalopa stage were obtained under Light conditions (42% in collective cultures and 30% in individual cultures). In Dark conditions events of metamorphosis to megalopa stage was observed only in 16% of collective cultures and 7% of individual cultures. The result indicates that low light intensities may negatively affect larval survivorship during U. cordatus larval cultivations.
Acesso aberto (Open Access)
Effect of copaiba essential oil on broiler chickens' performance
(2013-06) AGUILAR, César Augusto López; LIMA, Kedson Raul de Souza; MANNO, Maria Cristina; TAVARES, Fernando Barbosa; SOUZA, Vanessa Pereira de; FERNANDES NETO, Dário Lisboa
The effects of copaiba essential oil on growth performance and yield of slaughtered broilers were evaluated. Four hundred and fifty broiler chicks were distributed in a completely randomized design, with five treatments, and six replicates of 15 broiler chicks. Treatments comprised Control (commercial promoter) and four levels of copaiba essential oil, or rather, 0.15 (0.15EO); 0.30 (0.30EO); 0.45 (0.45EO) and 0.60 mL (0.60EO) kg-1feed. The 21-day-old broilers fed on growth promoter had a greater body weight than that of birds fed on treatments with inclusion 0.30, 0.45 and 0.60 mL of essential oil (p < 0.05). Aged 40 days, only the broilers fed on treatment with high level of inclusion of essential oil showed lower body weight when compared with those fed on treatment with growth promoter (p < 0.05). Feed intake, feed conversion, viability of broilers, carcass yield, commercial cuts and weight of the internal organs were not affected by treatments (p > 0.05). The efficiency of productive index decreases in proportion to the increase of copaiba essential oil inclusion level. Copaiba essential oil may be included in the diet up to 0.15 mL kg-1level without affecting the performance of broiler chickens.