Revista Brasileira de Saude e Producao Animal最新文献_第4页

Temporary reduction of digestible lysine in nursery pig diets: performance and economic analysis 苗猪日粮中可消化赖氨酸的暂时降低:性能和经济分析

Revista Brasileira de Saude e Producao Animal Pub Date : 2022-01-01 DOI: 10.1590/s1519-994020222025

A. M. Correia, A. Saraiva, L. M. Teixeira, F. C. O. Silva, V. Ribeiro Júnior, G. C. Rocha

{"title":"Temporary reduction of digestible lysine in nursery pig diets: performance and economic analysis","authors":"A. M. Correia, A. Saraiva, L. M. Teixeira, F. C. O. Silva, V. Ribeiro Júnior, G. C. Rocha","doi":"10.1590/s1519-994020222025","DOIUrl":"https://doi.org/10.1590/s1519-994020222025","url":null,"abstract":"ABSTRACT To evaluate the effects of temporary dietary lysine restriction on nursery pigs’ growth performance and its economic viability compared to control diets, 144 piglets (21-d-old) were assigned to randomized blocks, with two treatments and twelve replicates. The treatments were control-lys: lysine level as recommended from 21-32 and 32-42 days and low-lys: 90% of the lysine level of the control-lys diets. From 42 to 62 days, all animals received a control diet. From 21 to 32 days, pigs fed low-lys had worse average daily gain (ADG), feed conversion, and 32-d body weight (BW; P ≤ 0.05). From 32 to 42 days, pigs fed low-lys had lower average daily feed intake, ADG, and 42-d BW (P ≤ 0.05). From 42 to 62 days, pigs had similar performance (P > 0.05). Overall (21 to 62 days), pigs fed the low-lys had lower (P <0.05) ADG and final BW. At 27 and 29 days, pigs fed the low-lys diet had a higher (P≤0.05) incidence of diarrhea. The lowest feed cost and the highest economic efficiency index were recorded for the low-lys treatment. However, pigs fed the control-lys presented a 3.9% higher profitability. In conclusion, a temporary reduction of lysine in the diets of nursery pigs followed by an unrestricted diet in the subsequent period led to worse growth performance and lower economic viability.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67525477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gas exchange, chemical composition and productive characteristics of tropical grasses deferred II: cultivars BRS Paiaguás and BRS Piatã 热带草地的气体交换、化学成分及生产特性ⅱ:品种BRS Paiaguás和BRS Piatã

Revista Brasileira de Saude e Producao Animal Pub Date : 2021-07-30 DOI: 10.1590/s1519-99402122162021

Francisca Gisele Rodrigues dos Santos, R. A. Araújo, M. Cândido, M. Rogério, C. Costa, V. Silva, R. Furtado, R. Pompeu

{"title":"Gas exchange, chemical composition and productive characteristics of tropical grasses deferred II: cultivars BRS Paiaguás and BRS Piatã","authors":"Francisca Gisele Rodrigues dos Santos, R. A. Araújo, M. Cândido, M. Rogério, C. Costa, V. Silva, R. Furtado, R. Pompeu","doi":"10.1590/s1519-99402122162021","DOIUrl":"https://doi.org/10.1590/s1519-99402122162021","url":null,"abstract":"ABSTRACT This study aimed to evaluate the physiological parameters, the productive characteristics, structural and chemical composition of Urochloa Brizantha cultivars BRS and BRS Piatã submitted to two deferment periods and three using times. The experimental design was randomized complete block design in a factorial scheme 2 x 2 x 3, being two grass cultivars (Paiaguás grass and Piatã grass), two deferment periods (rainy season and dry-rainy transition) and three sealing times (40, 80 and 120 days). It was observed that, in the rainy season, the grasses had higher leaf transpiration rate when used for 40 days of deferment (1.66 µmol m2/s). During the rainy season, the Stomatal conductance was detected only in the grasses used with shorter seal, with an average of 0.07 µmol m2/s. In contrast, in the period of transition, the concentration decreased to 0.02 µmol m2/s. In a general way, the BRS Paiaguás presented lower content of NDF. The shorter cycle provided greater biomass production of total forage during the period of rain, approximately 2.78 times more than the same pasture grass deferred during the transition period. Generally, the periods of deferment and moments of use cause effects on structural characteristics of pasture, being that the period of deferment of the transition period and used for 40 and 80 days may be a strategy for keeping animals in critical periods.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67533233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vitamin and mineral supplementation improves erythrocytic recovery and productive performance of infected by gastrointestinal parasites 补充维生素和矿物质可改善胃肠道寄生虫感染者的红细胞恢复和生产性能

Revista Brasileira de Saude e Producao Animal Pub Date : 2021-07-28 DOI: 10.1590/s1519-99402122132021

L. B. Farias, J. Cardoso, J. Feijó, M. N. Corrêa, C. Brauner, Francine Siegert, A. Barbosa, F. D. Del Pino, R. A. Pereira

{"title":"Vitamin and mineral supplementation improves erythrocytic recovery and productive performance of infected by gastrointestinal parasites","authors":"L. B. Farias, J. Cardoso, J. Feijó, M. N. Corrêa, C. Brauner, Francine Siegert, A. Barbosa, F. D. Del Pino, R. A. Pereira","doi":"10.1590/s1519-99402122132021","DOIUrl":"https://doi.org/10.1590/s1519-99402122132021","url":null,"abstract":"ABSTRACT The objective of the present study was to evaluate the effect of a vitamin and mineral complex, associated with the application of an efficient anthelmintic, in parasitized lambs, with characteristic signs of gastrointestinal nematode infection, on hematological clinical parameters of clinical improvementand weight gain. 60 lambs Australian Merino breed, with 8 and 9 months of age, were segregated in four groups: control (no supplemetation); formula 1 (Iron Dextran, Organic Phosphorus, Cyanocobalamin and Vitamin k); formula 2 (Iron Dextran, Organic Phosphorus and Cyanocobalamin); and formula 3 (Vitamin k). Hematocrit, prothrombin time, total plasma proteins, color of the conjunctiva and weight gain were analyzed. The results were submitted to analysis of variance (ANOVA) through the repeated measures test. There was no statistical difference between treatments for the variables of hematocrit (P = 0.564), prothrombin time (P = 0.911) and plasma proteins (P = 0.6), for the conjunctiva color variable there was a difference (P = 0.052 ), with greater results for the groups supplemented with Vitamin K, Butafosfan, Cyanocobalamin and Iron (groups F1 and F3), as well as those same groups reached higher body weight at D35 (P = 0.023). It can be concluded that the administration of vitamin and mineral complex, associated with efficient anthelmintic, promoted a better performance in parasitized lambs.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48711203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pre-starter feed thermally processed to feed broiler chicks 预发酵剂饲料经热加工后用于肉鸡饲料

Revista Brasileira de Saude e Producao Animal Pub Date : 2021-07-12 DOI: 10.1590/s1519-99402122102021

R. F. Sousa, N. Leandro, F. B. Carvalho, J. H. Stringhini, MB Café, Roberto Moraes Jardim Filho, P. M. Rezende

{"title":"Pre-starter feed thermally processed to feed broiler chicks","authors":"R. F. Sousa, N. Leandro, F. B. Carvalho, J. H. Stringhini, MB Café, Roberto Moraes Jardim Filho, P. M. Rezende","doi":"10.1590/s1519-99402122102021","DOIUrl":"https://doi.org/10.1590/s1519-99402122102021","url":null,"abstract":"ABSTRACT The objective of this study was to evaluate the thermal processing of pre-initial diets on performance, morphometry of the organs of the digestive system and nutrient digestibility in broiler chicks. The test sample consisted of 180 broiler chicks distributed in a completely randomized design, with two treatments, six replications of 15 birds each. The treatments consisted of pelleted feed (70°C) and extruded feed (150°C). The metabolism test was realized from 4 to 7 days of age, while the performance and morphometry of the organs of the digestive system were evaluated at 7 and 21 days of age. The data were submitted to analysis of variance. At seven days of age, chicks that consumed extruded feed had lower feed intake, less development of digestive tract organs, lower nitrogen absorption rate, dry matter, in addition to less metabolizable energy compared to pelleted feed. Likewise, at 21 days of age, chicks that consumed extruded pre-starter feed performed worse than pelleted feed. The conclusion is thus reached that feed extruded at 150 ° C for broiler chicks in the pre-initial phase, results in lower nutrient digestibility and an inferior development of the organs of the digestive system at 7 days of age and worse performance at 21 days.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67532597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Structure and nutritional value of BRS Zuri grass under shading 遮荫条件下BRS祖日草的结构与营养价值

Revista Brasileira de Saude e Producao Animal Pub Date : 2021-07-12 DOI: 10.1590/s1519-99402122122021

E. R. Janusckiewicz, L. Paiva, H. J. Fernandes, A. Fleitas, C. F. D. Duarte, T. T. Biserra, Patrícia dos Santos Gomes

{"title":"Structure and nutritional value of BRS Zuri grass under shading","authors":"E. R. Janusckiewicz, L. Paiva, H. J. Fernandes, A. Fleitas, C. F. D. Duarte, T. T. Biserra, Patrícia dos Santos Gomes","doi":"10.1590/s1519-99402122122021","DOIUrl":"https://doi.org/10.1590/s1519-99402122122021","url":null,"abstract":"ABSTRACT The objective was to determine the structural and nutritive parameters for Panicum maximum cv. BRS Zuri under a Eucalyptus shading system, in rainy and dry seasons. At the beginning of each season, the treatments (foliar fertilization levels of 0, 3, 6 and 9 L ha-1) were applied and evaluated at 28, 56, and 84 growing days. The treatments did not affect significantly (p ≥ 0.05) the evaluated parameters. The systems (shading and full sun) and seasons did not change (p ≥ 0.05) forage and root masses. The leaf crude protein content was higher (p ≤ 0.05) in the dry season. Height, leaf mass, stem and dead material, neutral and acid detergent fiber contents, and in vitro dry matter digestibility were affected (p ≤ 0.05) by the system x season. The growing days did not affect (p ≥ 0.05) forage mass. The mass of dead material decreased (p ≤ 0.05) over the evaluated intervals. The other parameters were affected (p ≤ 0.05) by system × growing days. Based on the results, the forage and root masses show that the cv. BRS Zuri is adapted to the shading in the proposed experimental conditions. These masses added to the crude protein content indicate adaptation to low rainfall, inherent to the dry season, while foliar fertilization applied at the beginning of seasons did not affect the structural and nutritive parameters of BRS Zuri grass.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49453899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Substituting corn grain for passion fruit peels in feed for confined sheep 用玉米代替西番莲果皮饲喂圈养羊

Revista Brasileira de Saude e Producao Animal Pub Date : 2021-07-12 DOI: 10.1590/s1519-99402122142021

Raul Dirceu Pazdiora, B. R. C. N. Pazdiora, Edicarlos Oliveira Queiroz, T. Mendonça, Fernanda dos Santos Cândido, Mariana Moreira dos Anjos, Islan Junior Rodrigues de Matos, André Luiz Silva Andrelino

{"title":"Substituting corn grain for passion fruit peels in feed for confined sheep","authors":"Raul Dirceu Pazdiora, B. R. C. N. Pazdiora, Edicarlos Oliveira Queiroz, T. Mendonça, Fernanda dos Santos Cândido, Mariana Moreira dos Anjos, Islan Junior Rodrigues de Matos, André Luiz Silva Andrelino","doi":"10.1590/s1519-99402122142021","DOIUrl":"https://doi.org/10.1590/s1519-99402122142021","url":null,"abstract":"ABSTRACT The aim of this study was to evaluate diets substituting corn grain with passion fruit peels on the consumption, ingestive behavior, digestibility of diets and sheep performance. A total of 20 sheep were used, confined in individual pens, fed twice a day, with diets which included passion fruit peels in the proportions of 0; 25; 50; 75 and 100% replacing corn grain. The corn grain represented 70% of the dry matter of the diet and the passion fruit peels were supplied in dehydrated form. The experimental design was completely randomized with five treatments and four replicates. The data were submitted to analysis of variance and regression analysis at the significance level of 5%. There was a linear increase in dry matter consumption with an increase of 3.89 g for each inclusion level of passion fruit peel. The apparent digestibility of dry matter decreased and neutral detergent fiber increased linearly with the substitution of corn grain with passion fruit peels. The feeding, rumination, leisure and water intake times presented averages of 3.74; 2.92; 16.92 and 0.42 hours, and were not influenced by the diets (P>0.05). The average daily weight gain was similar for the animals in the different diets and consequently the final weight presented average values of 0.226 kg day-1 and 32.1 kg, respectively. The inclusion of passion fruit peels in the sheep diet is an interesting alternative because even with the reduced dry matter digestibility, it increased the consumption and promoted similar weight gains.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67533191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Use of biofermented plants adapted to the semi-arid region in piglet diets 在仔猪日粮中使用适应半干旱地区的生物发酵植物

Revista Brasileira de Saude e Producao Animal Pub Date : 2021-03-29 DOI: 10.1590/S1519-99402122072021

Elton de Oliveira, Terezinha D D Martins, M. C. Thomaz, L. Pascoal, J. H. V. Silva, Taisa Rocha Gomes da Silva, Mariany de Souza Brito, J.M.S. Almeida, Jorge Luiz Santos de Almeida

{"title":"Use of biofermented plants adapted to the semi-arid region in piglet diets","authors":"Elton de Oliveira, Terezinha D D Martins, M. C. Thomaz, L. Pascoal, J. H. V. Silva, Taisa Rocha Gomes da Silva, Mariany de Souza Brito, J.M.S. Almeida, Jorge Luiz Santos de Almeida","doi":"10.1590/S1519-99402122072021","DOIUrl":"https://doi.org/10.1590/S1519-99402122072021","url":null,"abstract":"ABSTRACT Two experimental tests were carried out to evaluate the inclusion of a biofermented semi-arid plant mix in diets of piglets in the initial weaning phase. In the first trial, the nutritional value and digestibility of nutrients and the digestible and metabolizable energy values of the bio-fermented plants mix were evaluated. To do so, eight piglets with an initial average weight of 15.2 ± 2.7 kg were used, housed in metabolic cages, and using the total collection of feces and urine. The bio-fermented plant mix diet presented 80.40% and 68.18% as digestibility coefficients for dry matter and crude fiber, respectively; 10.08% crude protein and 2,865 kcal/kg of metabolizable energy. In the second trial, the inclusion of 0, 3, 6 and 9% of bio-fermented plant mix was evaluated on performance, diarrhea incidence, plasma components, weight, and length of digestive organs of piglets in the initial weaning phase. To do so, 40 piglets with an initial average weight of 12.6 ± 3.5 kg were used, distributed in a randomized block design with four treatments, five replicates, and two animals per experimental unit. The inclusion of different levels of bio-fermented plant mix did not affect (P>0.05) the performance, weight, and length of digestive organs or serum parameters. However, the inclusion of bio-fermented plant reduced (P<0.01) the diarrhea incidence. It is concluded that bio-fermented plants adapted to the semi-arid region has the potential to be used in diets for pigs in the initial weaning phase.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67532574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In vitro degradation dynamics of neutral detergent fiber and silage quality of waste from production of heart of palm of peach palm 桃树棕榈心生产废弃物中性洗涤纤维体外降解动态及青贮品质研究

Revista Brasileira de Saude e Producao Animal Pub Date : 2021-01-01 DOI: 10.1590/S1519-99402122082021

S. G. Freitas, G. F. V. Bayão, A. Queiroz, R. Pimentel, C. M. R. Rocha Junior, K. R. S. Sousa

{"title":"In vitro degradation dynamics of neutral detergent fiber and silage quality of waste from production of heart of palm of peach palm","authors":"S. G. Freitas, G. F. V. Bayão, A. Queiroz, R. Pimentel, C. M. R. Rocha Junior, K. R. S. Sousa","doi":"10.1590/S1519-99402122082021","DOIUrl":"https://doi.org/10.1590/S1519-99402122082021","url":null,"abstract":"ABSTRACT The objective of the present work was to evaluate the chemical composition, fermentation profile, and degradation parameters of the neutral detergent fiber of three silages made with the waste from production of heart of peach of palm, which consisted of leaf, leaf sheath, and their compound (55% leaf and 45% leaf sheath). The waste was packed in experimental silos and open after sixty days of fermentation; silage samples were collected for determination of chemical composition and degradation parameters of neutral detergent fiber at 0, 3, 6, 9, 12, 24, 36, 48, 72, and 96 h of incubation in vitro. A difference was detected in the dry matter, crude protein, neutral detergent fiber, acid detergent fiber, and lignin contents between the three types of silage. The leaf silage showed a higher fractional degradation rate and a higher potentially digestible fraction of neutral detergent fiber over the 96 h of incubation. As for the fermentative parameters, silage made with the leaf showed a higher pH (3,79) and lactic acid (1,18%), acetic acid (0,39%) and propionic acid (0,24%). The butyric acid was higher for compound silage (0,012%) and ammoniacal nitrogen was higher for sheath silage (0,94%). The leaf silage displayed better chemical characteristics, fermentation parameters and in vitro degradability properties, proving to be the silage with best nutritional value for feeding ruminants.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67532743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of season and external morphology on thermal comfort and physiological responses in bulls from two breeds adapted to a subtropical climate 季节和外部形态对适应亚热带气候的两个品种公牛热舒适和生理反应的影响

Revista Brasileira de Saude e Producao Animal Pub Date : 2021-01-01 DOI: 10.1590/S1519-99402122022021

P. Souto, Eleonara Araújo Barbosa, E. Martins, V. Martins, L. HATAMOTO-ZERVOUDAKIS, C. Pimentel, A. Ramos

{"title":"Influence of season and external morphology on thermal comfort and physiological responses in bulls from two breeds adapted to a subtropical climate","authors":"P. Souto, Eleonara Araújo Barbosa, E. Martins, V. Martins, L. HATAMOTO-ZERVOUDAKIS, C. Pimentel, A. Ramos","doi":"10.1590/S1519-99402122022021","DOIUrl":"https://doi.org/10.1590/S1519-99402122022021","url":null,"abstract":"ABSTRACT Animals in subtropical regions can be exposed to periods of thermal stress. Locally adapted breeds are especially important in this context, but these have little information available in their natural environments. The aim of this study was to assess whether season affects thermal comfort and physiological responses to increased temperatures of two breeds of bulls in a subtropical climate. Four Angus and four Crioulo Lageano bulls were used in this study. Body and testicles measurements, skin pigmentation and thickness, hair number, length and pigmentation, respiratory rate, panting score, rectal temperature and haematological profile were recorded on three occasions in summer and winter, morning and afternoon. The surface temperature of the flank, eye and scrotum were obtained by infrared thermography. Hair coat colour was determined by CIELAB method. Thermal comfort indexes were calculated from meteorological data. Statistical analysis included analyses of variance, correlations and a partial least squares regression in determining which traits were the most important in thermal adaptability. External morphology of the bulls was important for explaining physiological changes in both seasons, but their contribution was greater in summer. Bulls experienced moderate heat stress in summer, which led to significant physiological responses, which were more pronounced in Angus bulls. The main differences in thermal adaptation found between breeds were the hair coat characteristics and respiratory rate. Despite using different mechanisms to cope with environmental challenges, all bulls were able to maintain optimal testicular thermoregulation as well as systemic normothermia throughout the seasons, showing good adaptation to the climate conditions.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67532490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Antifungal and antioxidant effect of the lachnophyllum ester, isolated from the essential oil of Baccharis trinervis (Lam.) Pers., against dermatophytes fungi 三叶草挥发油中香叶酯的抗真菌和抗氧化作用。珀耳斯。，对抗皮肤真菌

Revista Brasileira de Saude e Producao Animal Pub Date : 2021-01-01 DOI: 10.1590/s1519-99402122542021

Antonio Carlos Nogueira Sobrinho, R. Fontenelle, E. Souza, S. Morais

{"title":"Antifungal and antioxidant effect of the lachnophyllum ester, isolated from the essential oil of Baccharis trinervis (Lam.) Pers., against dermatophytes fungi","authors":"Antonio Carlos Nogueira Sobrinho, R. Fontenelle, E. Souza, S. Morais","doi":"10.1590/s1519-99402122542021","DOIUrl":"https://doi.org/10.1590/s1519-99402122542021","url":null,"abstract":"ABSTRACT Dermatophytes are hyaline fungi that parasitize the keratinized tissue of humans and animals causing mycotic infections. Natural products are promising molecules for the development of new antifungal drugs, due to the phenomenon of resistance and toxicity. This study reports the isolation and identification of lachnophyllum ester and evaluates its antioxidant, antifungal and modulatory activities against dermatophytes fungi. Lachnophyllum ester was obtained using a silica gel column chromatography of the essential oil from the aerial parts of Baccharis trinervis and analyzed by gas chromatography/mass spectrometry. Antimicrobial activity was determined by the broth microdilution method. The modulatory activity assays were performed by the checkerboard technique using lachnophyllum ester and ketoconazole as standard. The lachnophyllum ester exhibited good antioxidant activity as measured by a β-carotene/linoleic acid bleaching system, with 71.43% ± 0.01% inhibition rate. In addition, it showed antifungal activity against Trichophyton rubrum and Microsporum canis strains. In the modulatory assay, interaction between lachnophyllum ester and ketoconazole was synergistic, reducing the minimum inhibitory concentration (MIC) values of the antifungal drug and modulating its antifungal action against dermatophyte strains. In conclusion, lachnophyllum ester has been shown to act as a natural antioxidant compound, as well as an antimicrobial alternative against dermatophyte fungi of the genus Trichophyton and Microsporum.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67533844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2