Publicações - ciências agrárias
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SANTOS DE JESUS, WESLEY;
DE CAMPOS MONTEIRO, THIAGO;
DE SOUZA MANGINI, TAUANA;
Alessandro Camargo Angelo;
MAGGI DOS ANJOS, RUI ANDRÉ;
SULATO DE ANDRADE, ALAN;
GONÇALVES ROBERT, RENATO CESAR;
MOTTA COUTO, ALLAN;
KOCH FERNANDES DE SOUZA, KAREN
Palavra-chave:
Eucalyptus dunnii;
eucalipto;
produtividade;
madeira;
Fertilizantes de liberação lenta;
Recursos Florestais e Engenharia Florestal
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Silvicultura; Fisiologia Florestal;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Silvicultura; Fisiologia Florestal;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Silvicultura; Florestamento e Reflorestamento
resumo ...
The aim of this work was to evaluate the effect of soil mineral fertilization in clonal and seminal plantations of E. dunnii on wood quality and its relationship with tree crown and trunk variables. Data were collected in experimental plantations of E. dunnii at 8.5-years-old. The treatments were seminal and clonal propagation and soil fertilization: conventional formulation, slow-release, and control. Tree crown and trunk variables were measured. Tree grain deviation, growth stress (LRS) and wood density were also measured. A mean test to compare treatments was performed and a correlation test was performed between parameters. Principal component analyzes (PCAs) were generated to understand the effects of treatments. The results demonstrate that the seminal propagation presented a greater length and percentage of the tree crown. On the other hand, clonal trees showed higher LRS. Soil fertilized in plantations showed a lower degree of trunk slenderness rate. The LRS showed a positive correlation with the trunk dimensions and volume. The PCAs results recommend the planting of clonal E. dunnii, under the soil nutritional management with fertilization of conventional formulation. These trees tend to present greater trunk growth and volumetric increment, as well as better parameters wood quality variables.
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Ana Maria FInco;
Catie Godoy;
Luana Carolina Bosmuler Züge;
Masson, Maria Lucia
Palavra-chave:
emoji;
Emotion;
Children;
sensory tests;
food
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Ciência e Tecnologia de Alimentos; Análise Sensorial
resumo ...
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KEEBLE, EMMA;
CRAY, CAROLYN;
JOACHIM, ANJA;
KNZEL, FRANK;
Fabiano Montiani Ferreira;
GRAHAM, JENNIFER;
JEKLOVÁ, EDITA;
KANFER, SARI;
LENNOX, ANGELA;
DESOUBEAUX, GUILLAUME;
BISWELL, ETHAN
Palavra-chave:
wild animal ophthalmology;
Rabbit;
Encephalitozoon cuniculi;
eye diseases
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Medicina Veterinária; Clínica e Cirurgia Animal; Oftalmologia Veterinária;
Ciências da Saúde; Medicina; Clínica Médica; Oftalmologia;
CIENCIAS_AGRARIAS; Medicina Veterinária; Clínica e Cirurgia Animal; Medicina de Animais Selvagens
resumo ...
Members of the microsporidial genus Encephalitozoon have the capacity to infect both mammals and birds, and E. cuniculi is most commonly found in rabbits. With a seroprevalence ranging up to 85%, E. cuniculi can be a problem in pet rabbits as well as in food production and laboratory animal science. While most infections are likely subclinical, there are three main clinical presentations: neurological, renal, and ocular. Typical clinical signs including vestibular disease and phacoclastic uveitis may develop with initial or relapsing infection, while renal infection is usually progressive and associated with non-specific clinical signs. High-sensitivity/specificity ante mortem diagnostic options are lacking, and serological testing most often provides adjunct rather than definitive information such that physical examination and other diagnostics are used more so for ruling out other differentials and comorbidities, rather than confirming infection. In the veterinary community, treatment regimens are variable given the lack of thorough studies and a consensus. The aim of this document is to present the available literature to give a concise review of this organism and its infection of rabbits as well as to propose guidelines and protocols for diagnostics and treatment regimens. In addition, the current challenges and recommendations for further studies are discussed.
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DA SILVA LINS, TARCILA ROSA;
EMMERICH, LUKAS;
DE CADEMARTORI, PEDRO HENRIQUE GONZALEZ;
LIMA DE SOUZA, RICARDO;
KLITZKE, RICARDO JORGE;
Márcio Pereira da Rocha;
MILITZ, HOLGER
Palavra-chave:
Fungal decay;
wood preservation;
Wood durability;
cooper;
Silicone
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Tecnologia e Utilização de Produtos Florestais; Biodeterioração da madeira;
CIENCIAS_AGRARIAS; Recursos Florestais e Engenharia Florestal; Tecnologia e Utilização de Produtos Florestais; Tratamento da Madeira
resumo ...
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Fransael Franklyn Araujo da Silva;
Andressa Aparecida da Silva;
Amanda Bernardi;
DREVECK, MYKAEL CHRYSTIAN;
Andressa Mott;
FONTANA, CAROLINA;
VIOTT, ALINE DE MARCO;
Erica Cristina Bueno do Prado Guirro
Palavra-chave:
tendinite;
histopatologia;
fibroblasto;
Colágeno
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Medicina Veterinária; Patologia Animal
resumo ...
(en)
The calcaneal tendon is the largest and strongest tendon in the body and is commonly affected by tendinopathies. Studies involving this tissue are mainly focused on injuries and therapeutic approaches; therefore, careful tendon harvesting and histological processing are essential to avoid sample loss. However, the literature lacks detailed protocols describing these procedures. Thus, the aim of this study was to establish the most appropriate protocol for collection and histological slide preparation of the calcaneal tendon in Wistar rats. Eighty Wistar rats were euthanized, followed by immediate tendon collection. The animals were allocated into 16 groups, varying according to the association of the tendon with skin, muscle group, and the tibiotarsal joint, as well as tissue positioning within the paraffin block (top or bottom). Samples were fixed in 10% formalin, processed using conventional histological techniques, and stained with hematoxylin and eosin. Histological evaluation was performed using ordinal scoring systems for fibroblast presence, collagen fiber arrangement, stromal disposition, and cellular organization. Data were analyzed using the Kruskal–Wallis test followed by Dunn’s post hoc test (p<0.05). The results demonstrated descriptive variation in histological quality among the evaluated protocols, particularly regarding cellular organization and collagen arrangement. Positioning the tendon with skin at the bottom of the paraffin block resulted in better structural preservation in a descriptive manner. No statistically significant differences were observed between the 2 µm and 5 µm section thicknesses. It is concluded that standardization of tissue positioning within the block and cutting orientation is the main determinant of quality and reproducibility in histopathological evaluation of the calcaneal tendon.
(pt)
O tendão calcâneo é o maior e mais forte tendão do organismo, sujeito a tendinopatias. O foco de estudos desse tipo de tecido fica restrito às lesões e aos possíveis tratamentos e, portanto, é fundamental que a coleta dos tendões e o preparo das lâminas sejam cautelosas a fim de não perder as amostras. Na literatura não há estudos que apresentem detalhadamente esses protocolos. Sendo assim, o objetivo desse trabalho foi o estabelecimento do melhor protocolo de coleta e preparo de lâminas do tendão calcâneo de ratos Wistar. Para tal, 80 ratos Wistar foram submetidos à eutanásia e imediata coleta do tendão. Os animais foram divididos em 16 grupos variando quanto à associação do tendão com pele, grupo muscular e articulação tíbio-társica, além do posicionamento do tecido no bloco de parafina (topo ou fundo do bloco). As amostras foram fixadas em formol a 10%, processadas por técnica histológica convencional e coradas por hematoxilina e eosina. A avaliação histológica foi realizada por meio de escores ordinais referentes à presença de fibroblastos, arranjo das fibras colágenas, disposição do estroma e organização celular. Os dados foram submetidos ao teste de Kruskal–Wallis, seguido do pós-teste de Dunn (p<0,05). Os resultados indicaram variação descritiva na qualidade histológica entre os diferentes protocolos avaliados, especialmente relacionada à organização celular e ao arranjo do colágeno. O posicionamento do tendão com pele no fundo do bloco apresentou melhor preservação estrutural de forma descritiva. Não foram observadas diferenças estatisticamente significativas entre as espessuras de corte de 2 µm e 5 µm. Conclui-se que a padronização do posicionamento do tecido no bloco e da orientação de corte é o principal fator determinante para a qualidade e reprodutibilidade da avaliação histopatológica do tendão calcâneo.
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MONTAGNINI, KARIM CRISTHINE PASE;
Manoela Marchezan Piva;
TAKIUCHI, ELISABETE;
Aline de Marco Viott;
Juliana C Goulart;
CHENG, ARTHUR COLOMBARI;
Carolina Fontana;
Ana Paula Molinari Candeias;
GRUCHOUSKEI, LEONARDO;
Pietra Malu Franzener Detoni;
Bianca Barroti;
Amália Ferronato
Palavra-chave:
Avian pathology;
Broilers;
Diagnosis;
fish;
gizzard
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Medicina Veterinária; Patologia Animal
resumo ...
ABSTRACT: Adenoviral gizzard erosions have been affecting domestic and wild birds worldwide,...
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MORAES, RENATA FRANCIELI;
MARTIN, DANIELA MARIA;
PRATES, ARTHUR PONTES;
Carolina Bremm;
Paulo César de Faccio Carvalho;
ALVES, LUCAS AQUINO;
OLIVEIRA, LEANDRO BITTENCOURT DE;
Aníbal de Moraes
Palavra-chave:
Gamma;
heterogeneity;
selective grazing;
continuous stocking;
Weibull
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Agronomia; agronomia
resumo ...
Sward height is a practical indicator for defining management targets that reflect pasture structure. The complexity of integrated systems, including the coexistence of trees, crops, and livestock, can modify animal grazing distribution and microhabitat conditions, leading to different degrees of sward heterogeneity and botanical composition. This study investigated sward-height distribution and species composition in four systems: livestock (L), livestock–forestry (LF), crop–livestock (CL), and crop–livestock–forestry (CLF). Data were collected over two years in pastures of black oat (Avena strigosa Schreb.), Aries grass (Megathyrsus maximus cv. Aries), Italian ryegrass (Lolium multiflorum Lam.), and other tropical grasses during summer, transition, and winter. Sward heights were classified into three categories (low, optimal, high) according to seasonal thresholds (winter: <18.0; 18–29.9; >30 cm; summer: <15.0; 15–24.9; >25 cm) and fitted to four probability distributions (normal, log-normal, Gamma, Weibull). Management based on target-height maintained 46% of observations within the optimal class, a satisfactory proportion for continuous stocking systems where structural heterogeneity is inherent. The CL system presented greater species diversity due to a higher frequency of Italian ryegrass and other grasses. Across systems and seasons, the Gamma distribution provided the best fit for sward-height frequencies. These findings offer a practical statistical tool for evaluating grazing management efficiency.
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Fernanda Ripel Salgado;
Amauri Felipe Evangelista;
Juliana Sesana;
Rodrigo de Almeida Teixeira;
Laila Talarico Dias Teixeira
Palavra-chave:
critérios de seleção;
defeitos morfológicos;
Gado de Corte;
Parâmetros Genéticos
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Zootecnia; Genética e Melhoramento dos Animais Domésticos
resumo ...
Morphological defects in beef cattle can compromise animal welfare, functionality and reproductive efficiency, generating economic losses and reducing longevity. Understanding their genetic basis is essential to support selection decisions and prevent the dissemination of defects in breeding programs. This study aimed to estimate the genetic parameters for defects of feet and legs (FL), mouth (MO), chamfer (CH), racial characterization (RC), depigmentation (DP), umbilical hernia (UH), testicular hypoplasia (TH) and navel (NV), evaluated as binary traits at 18 months of age, in Nellore cattle. The data was provided by the CRV Lagoa - PAINT® beef cattle genetic breeding program, which belonged to the company until 2020. The components of (co)variance and breeding values were estimated by Bayesian inference using Animal Models. The genetic correlation between FL and yearling weight (YW) was obtained through a two-trait linear-threshold model. Posterior heritabilities for FL, MO, CH, RC, DP, UH, TH, NV and YW were 0.16 ± 0.03; 0.23 ± 0.04; 0.19 ± 0.03; 0.39 ± 0.04; 0.69 ± 0.04; 0.38 ± 0.12; 0.19 ± 0.04; 0.53 ± 0.04 and 0.45 ± 0.01, respectively. When lineage effect was considered fixed, all traits showed high heritability (> 0.40). The genetic correlation between FL and YW was negative and of low magnitude (-0.06 ± 0.05 without lineage; -0.01 ± 0.09 with lineage). The estimated genetic trends for FL, MO, CH, RC, DP, TH and NV declined over the years, indicating a gradual reduction of their incidence due to selection, while UH presented unstable pattern. Overall, the results indicated that including disqualifying traits in breeding programs can lead to reduced occurrence of morphological defects in Nellore herds.
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BORDIGNON, FRANCESCO;
COSTA, LUIZA COUTINHO;
DE SOUZA VALENTE, CECÍLIA;
MAUERWERK, MARLISE;
CAZAROLLI, LUISA HELENA;
DO NASCIMENTO FERREIRA, CAIO HENRIQUE;
BOSCOLO, WILSON ROGÉRIO;
Eduardo Luis Cupertino Ballester
Palavra-chave:
nutrition;
protein
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Recursos Pesqueiros e Engenharia de Pesca; Aqüicultura; Piscicultura
resumo ...
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FRANÇA, TATIANE OTTO DE;
MARTINS, BÁRBARA;
OLIVEIRA, BRUNO GONÇALVES DE;
Luis Antonio Biasi;
BOTELHO, RENATO VASCONCELOS;
JORDÃO, ANTÓNIO M.
Palavra-chave:
viticultura;
vitis vinifera;
compostos fenólicos
Áreas do conhecimento:
CIENCIAS_AGRARIAS; Agronomia; Fitotecnia; Manejo e Tratos Culturais
resumo ...
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