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Total 84379 results found since Jan 2013.
Organic or Inorganic Zinc for Laying Hens? A Systematic Review and Meta-analysis of the Effects of Zinc Sources on Laying Performance, Egg Quality, and Zinc Excretion
Biol Trace Elem Res. 2023 Sep 21. doi: 10.1007/s12011-023-03861-3. Online ahead of print.ABSTRACTThe higher availability of zinc (Zn) from organic than inorganic sources is already established, but more assertive and cost-friendly protocols on the total replacement of inorganic with organic Zn sources for laying hens still need to be developed. Because some discrepancy in the effects of this replacement in laying hen diets is noticeable in the literature, the objective of this meta-analysis was to properly quantify the effect size of total replacing inorganic Zn with organic Zn in the diet of laying hens on their laying pe...
Source: Biological Trace Element Research - September 21, 2023 Category: Biology Authors: Giovane Dias da Silva J éferson Maia Leony da Silva Costa Gabriella Ferreira de Oliveira Sa Maria Teresa Oliveira Gabino Mendes Natalia Ramos Batista Chaves Belchiolina Beatriz Fonseca Bruno Serpa Vieira Source Type: research
Effects of Dietary Valine Chelated Zinc Supplementation on Growth Performance, Antioxidant Capacity, Immunity, and Intestine Health in Weaned Piglets
In conclusion, the present research showed that supplementation of ZnVal improves growth performance by increasing antioxidant capacity and immunity and regulating intestinal morphology and the optimal inclusion level of ZnVal was 65~80 mg/kg.PMID:37730969 | DOI:10.1007/s12011-023-03870-2
Source: Biological Trace Element Research - September 21, 2023 Category: Biology Authors: Tuan Zhang Nan Zhang Shuyu Peng Yawei Zhang Huakai Wang Shiyu Huang Min Zhu Yongxi Ma Source Type: research
Mediodorsal thalamus-projecting anterior cingulate cortex neurons modulate helping behavior in mice
This study revealed the ACC-MDL circuit modulates prosocial behavior to avoid harm to conspecifics and may shed light on the treatment of neuropsychiatric disorders with dysfunction of prosocial behavior.PMID:37734375 | DOI:10.1016/j.cub.2023.08.070
Source: Current Biology - September 21, 2023 Category: Biology Authors: Da Song Chunjian Wang Yue Jin Yujun Deng Yan Yan Deheng Wang Zilu Zhu Zunji Ke Zhe Wang Yili Wu Junjun Ni Hong Qing Zhenzhen Quan Source Type: research
Evolution of horn length and lifting strength in the Japanese rhinoceros beetle Trypoxylus dichotomus
We describe phylogeographic relationships among populations of a rhinoceros beetle and show that the "pitchfork" shaped head horn likely increased in length independently in the northern and southern radiations of beetles. Both increases in horn length were associated with dramatic reductions to horn lifting strength-compelling evidence for the paradox of the weakening combatant-and these initial reductions to horn strength were later ameliorated in some populations through reductions to horn length or through increases in head height (the input arm for the horn lever system). Our results reveal an exciting geographic mosa...
Source: Current Biology - September 21, 2023 Category: Biology Authors: Jesse N Weber Wataru Kojima Romain P Boisseau Teruyuki Niimi Shinichi Morita Shuji Shigenobu Hiroki Gotoh Kunio Araya Chung-Ping Lin Camille Thomas-Bulle Cerisse E Allen Wenfei Tong Laura Corley Lavine Brook O Swanson Douglas J Emlen Source Type: research
Inhibitory feedback from the motor circuit gates mechanosensory processing in Caenorhabditis elegans
PLoS Biol. 2023 Sep 21;21(9):e3002280. doi: 10.1371/journal.pbio.3002280. Online ahead of print.ABSTRACTAnimals must integrate sensory cues with their current behavioral context to generate a suitable response. How this integration occurs is poorly understood. Previously, we developed high-throughput methods to probe neural activity in populations of Caenorhabditis elegans and discovered that the animal's mechanosensory processing is rapidly modulated by the animal's locomotion. Specifically, we found that when the worm turns it suppresses its mechanosensory-evoked reversal response. Here, we report that C. elegans use inh...
Source: Rivista di Biologia - September 21, 2023 Category: Biology Authors: Sandeep Kumar Anuj K Sharma Andrew Tran Mochi Liu Andrew M Leifer Source Type: research
Microbiological evaluation of homemade mayonnaise and self-serve acai sold in Aragua ína, Tocantins
In this study, samples of homemade spiced mayonnaise and self-serve acai sold in the city of Araguaína, Tocantins, Brazil were analyzed for microbiological contaminants. Acai was collected from 10 stores, one sample from each store, and tested for mold, yeast, and coliforms, as well as coliform identification and total and thermotolerant coliform counts. Mayonnaise was collected from 20 snack bars, one sample from each. These samples were inoculated on MacConkey and Salmonella Shigella agar plates, and the plates were analyzed for growth. Salmonella spp. were detected in some Mayonnaise samples, and coliforms were detecte...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: M J M Paiva M L R Silva M R Alcantara F B S Santos J V R Costa R F Diogo L T F Silva A L Santos E H S Guedes P O Vellano C C R G N Magalh ães I A M Damasceno Source Type: research
Foliar application of silicon sources and shading levels in Peltophorum dubium (Spreng.) Taub
Braz J Biol. 2023 Sep 18;83:e274475. doi: 10.1590/1519-6984.274475. eCollection 2023.ABSTRACTDepending on the intensity and ecological successional classification of plants, light availability can become an unfavorable condition for producing high-quality seedlings. We hypothesized that applying silicon sources might contribute to inducing tolerance to different shading levels for Peltophorum dubium (Spreng.) Taub. seedlings. Two independent experiments were developed: I) the application of five doses of silicon oxide (SiO2: 0.0; 1.0; 2.0; 4.0; and 6.0 g L-1); and II) the application of five doses of potassium silicate (K2...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: V W Trovato S C Santos G D Mar C C Santos N F Corr êa P S Zomerfeld E P Torales Source Type: research
Using chitosan nanoparticles and N-acetyl thiazolidine 4-carboxylic acid for olive trees efficiency raising, improving fruits properties and oil quality
Braz J Biol. 2023 Sep 18;83:e273643. doi: 10.1590/1519-6984.273643. eCollection 2023.ABSTRACTRecently exposure of olive trees to many stresses particularly oil varieties led to decline in the olive yield. The target of the study is to improve vegetative growth and increase olive fruits quality as well as the fruit oil % and oil quality by applying chitosan nanoparticles (CHNPs) and N-acetyl thiazolidine 4-carboxylic acid (N-ATCA) under the conditions of Egypt. The experiment was carried out in the seasons of 2021 and 2022 on Arbosana olive trees 8 years old and 4×6 m apart the trees sprayed three times on 15th Sept., 1st ...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: K S Alshallash I A Elnaggar A N Abd El-Wahed A Fahmy A M Tawfeeq E M Hammad A A Almashad A I Elmezien A E Hamdy I M Taha Source Type: research
Glutaredoxin proteins from E. coli isoforms were compared in terms of energy frustration
In this study, we have investigated the energy landscape and characterized the pattern of local frustration in different forms and states of the GRX protein ofE. coli.Analysis was done on the conformational alterations, significant changes in the frustration pattern, and different GRXs such as GRX-II, GRX-III, GRX-II-GSH, and GRX-III-GSH complex. We have found the practice of frustration, and structure was quite similar in the same isoform having different states of protein; however, a significant difference was observed between different isoforms. Moreover, oxidation of GRX-I introduced an extra α-helix increasing the de...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: A Patel K Tiwari P Asrani H Alothaid A F A Alahmari R Mirdad M R Ajmal M Tarique Source Type: research
Unonopsis guatterioides: morphological and chemical characteristics of its fruits and seeds, and germination processes under experimental conditions
This study aimed to evaluate the morphometry of seeds and fruits, their chemical composition, and the germination at different temperatures using seeds subjected to tegumentary dormancy break from fruits collected in a semi-deciduous seasonal forests in Mato Grosso do Sul, Brazil. The fruits under ripening showed a higher number of secondary metabolites and higher phenolic compounds. Morphometry results indicated that most seeds have length between 3.5 and 5.6 (81.3%), width between 8.1 and 9.0 mm (85.0%) and average weight of 0.28 g. The results indicate that there is a greater number of fruits with length ranging between...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: A K M Oliveira R Matias J C Pina Source Type: research
Morphology of 'Crioula' guava seedlings under irrigation with increasing salinity water and nitrogen/potassium fertilization
Braz J Biol. 2023 Sep 15;83:e275322. doi: 10.1590/1519-6984.275322. eCollection 2023.ABSTRACTSeveral studies have been conducted evaluating the management of fertilizers as strategies to mitigate the deleterious effects of salt stress, so the objective of this work was to evaluate the quality of 'Crioula' guava seedlings under irrigation with water of different salinity levels and fertilized with combinations of nitrogen and potassium. The experiment was performed in a protected (screened) environment using a randomized block design and analyzed in a 5 × 4 factorial scheme, with four replicates, with the plot formed by tw...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: R A Rodrigues-Filho R G Nobre A S Santos A D S Teixeira A P N Ferreira L A A Soares G S Lima W A Guedes E S Vasconcelos L A Silva K F P Ara újo Source Type: research
Gill and hepatic histological alterations in Sciades herzbergii resulting from trace element contamination in the Port of S ão Luiz, Brazil
The objective of this study was to evaluate, through changes in the gills and livers of Sciades herzbergii, the environmental contamination to which estuarine organisms are exposed in two areas in São Marcos Bay - MA. Two collection areas located in São Marcos Bay were selected for this study: A1, an area close to the Port Complex, and A2, an area on Caranguejos Island (included in the Environmental Protection Area of Baixada Maranhense). Collections were carried out during rainy and dry periods. Sediments (for trace element analyses), surface water (for physico-chemical analyses), and specimens of S. herzbergii (for bio...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: E B Ribeiro I M A Lima F C M Carvalho-Neto I C S Bezerra L C Sodr é R N F Carvalho-Neta Source Type: research
Pathogens and microorganisms in the mangrove oyster Crassostrea gasar cultivated in an estuarine environment in Northeast Brazil
Braz J Biol. 2023 Sep 15;83:e272789. doi: 10.1590/1519-6984.272789. eCollection 2023.ABSTRACTEstuaries are important ecosystems due to the ecological services they provide, acting as nurseries for many species of fish and invertebrates, and are also used as environments for the extraction and cultivation of mollusks. Oysters are animals that filter water to obtain oxygen and nutrients. In this process, they can bioaccumulate microorganisms and chemical substances in their tissues. The growth of mollusk culture in Northeastern Brazil requires the health identification of cultivated oysters through the quantification of the ...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: D C S Mendes D T A Rodrigues H M Gomes T M Lenz C M Silva I G Antonio Source Type: research
Immunostimulating activity of Uncaria tomentosa in RAW 264.7 macrophages
Braz J Biol. 2023 Sep 15;83:e271339. doi: 10.1590/1519-6984.271339. eCollection 2023.ABSTRACTUncaria tomentosa is a plant native to the Amazon that has immunomodulatory and antitumor properties due to the alkaloids found in the plant, being able to modify the immune response by potentiating or suspending the action of cytokines secreted by macrophages that induce the immune response, either by the classical route (M1) or through the alternative route (M2). Macrophages activated by M1 convert L-arginine into L-citrulline and nitric oxide (NO), whereas macrophages activated by the M2 pathway use the enzymatic activity of arg...
Source: Braz J Biol - September 20, 2023 Category: Biology Authors: A S D Brito J G Souza A V Moraes Filho P G Oliveira M A P Oliveira M S Barbosa J M G Sousa R M Pinto E C Concei ção C A Silva Source Type: research
Combined Effects of Fluoride and Dietary Seleno-L-methionine at Environmentally Relevant Concentrations on Female Zebrafish (Danio rerio) Liver: Histopathological Damages, Oxidative Stress and Inflammation
In this study, female zebrafish (Danio rerio) were exposed to fluoride (80 mg/L sodium fluoride) and/or dietary selenomethionine for 30, 60 and 90 days, the effects on the liver of zebrafish were investigated. The results indicated that an increase in fluoride burden, inhibited growth and impaired liver morphology were recorded after fluoride exposure. Furthermore, fluoride alone caused oxidative stress and inflammation in the liver, as reflected by the increase in ROS and MDA contents, the reduction of anti-oxidative enzymes, the altered immune related enzymes (ACP, AKP, LZM and MPO) and the expression of IL-6, IL-1β, TN...
Source: Biological Trace Element Research - September 20, 2023 Category: Biology Authors: Xiulin Zhang Jinling Cao Jianjie Chen Guodong Wang Lijuan Li Xiaobing Wei Runxiao Zhang Source Type: research
