Semina: Ciências Agrárias最新文献

{"title":"Metabolic profile and body condition score of Crioulo horses finalists in the Freio de Ouro competition","authors":"Mariana Andrade Mousquer, B. Curcio, Camila Gervini Wendt, B. S. S. Moraes, Rafaela Pinto de Souza, Isadora Paz de Oliveira dos Santos, Gabriela Marocco Raphaelli, Carlos Eduardo Wayne Nogueira","doi":"10.5433/1679-0359.2023v44n6p1947","DOIUrl":"https://doi.org/10.5433/1679-0359.2023v44n6p1947","url":null,"abstract":"The aim of this study was to assess the body condition score (BCS) and metabolic profile of finalists in the Freio de Ouro competition, stratified by sex. This study examined 84 Crioulo horses, comprising 43 non-pregnant mares and 41 stallions. Morphometric measurements, including BCS, cresty neck score (CNS), neck and heart girth, and assessments of fat depth at the neck and at the tail base, were conducted. Additional derived measurements such as the percentage of body fat (%BF), body mass index (BMI), fat mass (FM), fat-free mass (FFM), heart girth:height ratio (HG:HW), and neck circumference:height ratio (NC:HW) were calculated. A subgroup of 53 animals was selected for the evaluation of metabolic parameters, including triglycerides, cholesterol, low-density lipoprotein (LDL), high-density lipoprotein (HDL), lactate dehydrogenase (LDH), creatine kinase (CK), and adiponectin.In terms of BCS, 21% of participants were classified as overweight, with 49% having CNS≥3. Females exhibited greater fat deposition at the tail base and neck, along with higher %BF, FM, and HG:HW ratio, and lower NC:HWcompared to males. Among metabolic variables, females showed higher concentrations of LDH, LDL, CK, and lower concentrations of adiponectin than males. No differences were observed in morphometric measurements between participants that qualified for the final day of the competition and those which were disqualified. The study revealed that despite the rigorous physical demands and preparation required for the Freio de Ouro competition, a percentage of participants were overweight, displaying increased regional fat deposition in the neck. Although no metabolic changes related to increased adiposity were identified, the findings indicate a predisposition to the development of metabolic alterations. Additionally, females exhibited a greater accumulation of fat than males.","PeriodicalId":21921,"journal":{"name":"Semina: Ciências Agrárias","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138963634","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}

{"title":"Detecção de agentes zoonóticos e fatores de risco associados a diarreia em cães de um município do semiárido brasileiro","authors":"V. Amarante, I. Oliveira, Iranilda Cotrim da Costa, Marcos Igor da Costa Santos, A. N. Diniz, Carolina Pantuzza Ramos, Rodrigo Otávio Silveira Silva, K. A. Carvalho, Carlos Augusto de Oliveira Júnior","doi":"10.5433/1679-0359.2023v44n6p1975","DOIUrl":"https://doi.org/10.5433/1679-0359.2023v44n6p1975","url":null,"abstract":"Os animais domésticos são colonizados por uma extensa diversidade de bactérias comensais e patogênicas. Particularmente, os de estimação têm sido apontados como reservatórios de algumas bactérias específicas, como Salmonella spp. e Clostridioides (Clostridium) difficile. Esses animais também podem estar infectados por helmintos potencialmente zoonóticos. No entanto, pouco se sabe sobre os fatores de risco e frequência desses patógenos em cães no Brasil. O objetivo neste estudo foi avaliar a presença de Salmonella spp., C. difficile e helmintos com potencial zoonótico em cães no município de Barra (Bahia, Brasil), bem como fatores de risco associados à ocorrência de diarreia. Para isso, foram obtidas as fezes de 40 cães. Cada tutor respondeu a um questionário epidemiológico para identificar episódios anteriores de diarreia nos animais e fatores de risco associados à presença dos patógenos avaliados. Ancylostoma spp. foi detectado em cinco cães (12,5%), enquanto Salmonella spp. foi isolado em 12,5% dos animais. C. difficile não foi isolado neste estudo. A presença de Ancylostoma spp. foi associada a fezes secas e ausência de vermifugação por mais de 12 meses. Cães positivos para Salmonella spp. foram cinco vezes mais propensos a ter diarreia do que aqueles negativos para este patógeno. Animais alimentados com dieta à base de carne crua e em contato com outros animais apresentaram maior probabilidade de apresentar episódio de diarreia nos últimos 12 meses. Pela primeira vez, Salmonella enterica sorovar Oranienburg foi isolado em um cão. Este trabalho sugere que se deve dar atenção à alimentação dos cães e à desparasitação regular para mitigar os riscos impostos por estes dois patógenos zoonóticos.","PeriodicalId":21921,"journal":{"name":"Semina: Ciências Agrárias","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139175217","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}

{"title":"Investigation of Anaplasma marginale, Babesia bovis, Babesia bigemina and Trypanosoma vivax in the brain and spleen of dairy cows of Rio Grande do Sul","authors":"M. L. Rigo, K. R. Martins, Yan Wahast Islabão, Alexia Brauner de Mello, M. Giacometi, Rodrigo Casquero Cunha, Monique Tomazele Rovani, Camila Belmonte Oliveira","doi":"10.5433/1679-0359.2023v44n6p2063","DOIUrl":"https://doi.org/10.5433/1679-0359.2023v44n6p2063","url":null,"abstract":"Cattle tick fever and bovine trypanosomosis are diseases that negatively impact cattle production in Brazil, causing considerably productive losses and animals death. In this study, the objective was to investigate the presence of the four hemoparasites that mostly affect dairy herds (A. marginale, B. bovis, B. bigemina and T. vivax) using the qPCR technique in discarded dairy cows in the northwestern region of Rio Grande do Sul. For this purpose, brain and spleen tissue biopsies were collected at a local slaughterhouse from 64 dairy cattle from this region. DNA extraction from the samples was performed using the Brazol® reagent, their quantity and purity were obtained through spectrophotometer analysis with NanoDropTM. In the brain samples, DNA detection was performed for T. vivax and B. bovis, and in the spleen, DNA of the four agents was verified. From a total of 64 brain samples analyzed, 14.06 % were positive for Babesia bovis. For spleen samples, Babesia bovis was detected in 17.19 % of the samples, while 29.69 % tested positive for B. bigemina and 37.50 % for Anaplasma marginale. Regarding Trypanosoma vivax, none of the analyzed samples resulted in a positive diagnosis in both tissues. Thus, the findings highlighted that B. bovis, B. bigemina and A. marginale are present in the dairy cattle herd of the northwestern regions of Rio Grande do Sul, with a higher percentage of A. marginale; on the other hand, T. vivax was not diagnosed in the present study.","PeriodicalId":21921,"journal":{"name":"Semina: Ciências Agrárias","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139176033","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}

{"title":"Enhanced-efficiency fertilizers on the growth of coffee plants under weed (Bidens Pilosa) competition stress","authors":"C. Machado, Brendo de Oliveira Ferreira, A. França, L. T. Sardinha, Eudes Neiva Júnior","doi":"10.5433/1679-0359.2023v44n6p2027","DOIUrl":"https://doi.org/10.5433/1679-0359.2023v44n6p2027","url":null,"abstract":"The interference of weeds in coffee cultivation is one of the factors contributing to losses and impairments in crop growth and productivity. Consequently, it becomes necessary to employ strategies aimed at mitigating this stress and facilitating optimal crop development through enhanced nutritional practices. This study aimed to assess the impact of various sources and modes of release of enhanced-efficiency phosphate fertilizers on the initial growth of Coffea arabica L. plants in competition with the weed Bidens pilosa in a greenhouse. The experiment was conducted at the Federal University of Vales do Jequitinhonha and Mucuri – Diamantina MG, Brazil, employing a block design in a 4 x 6 factorial arrangement with four replications. The factors corresponded to four levels of B. pilosa infestation and six phosphorus sources (Super Single, Conventional, MAP, Granulated Organomineral, Pelleted Organomineral, MAP Coated with Polymer, and a control treatment without fertilization). The findings suggest that under the experimental conditions of this research, the escalating density of weed competition from B. pilosa negatively impacts the initial growth of coffee plants. However, this effect is dependent on the source of phosphate fertilization. Fertilizers with slow-release phosphate sources are recommended for coffee plantations, as they contribute to reduced weed growth in comparison to coffee plants.","PeriodicalId":21921,"journal":{"name":"Semina: Ciências Agrárias","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138964309","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}

{"title":"Gas exchange and yield of yellow passion fruit under different irrigated depths, planting hole volumes, and hydroretentive polymer application","authors":"Ana Paula Pereira do Nascimento, L. Cavalcante, Antônio Gustavo de Luna Souto, Í. Cavalcante, E. N. Melo, Marlene Pereira do Nascimento, E. F. D. Mesquita","doi":"10.5433/1679-0359.2023v44n6p2045","DOIUrl":"https://doi.org/10.5433/1679-0359.2023v44n6p2045","url":null,"abstract":"Passion fruit cultivation relies on irrigation to increase yields in the semiarid of northeastern Brazil. Water scarcity is one of the factors that most affect crop physiology, leading to lower yields. Therefore, this study aimed to assess the influence of planting hole volume and application of a hydroretentive polymer on physiological and productive aspects of irrigated yellow passion fruit cv. BRS GA1 in the Northeast semi-arid region of Brazil. The experiment was conducted in randomized blocks, in a split-plot design 2 × (2 × 2). Treatments consisted of irrigation depths (100% and 70% of the crop's evapotranspiration requirement - ETc), planting hole volumes (64 dm3 and 128 dm3), and soil with and without application of hydroretentive Polymer (1.5 g dm3), with four replicates and three plants per plot. The analyzed variables included chlorophyll a and b indices, gas exchange, and yellow passion fruit yield. The findings showed that hydroretentive polymer application to the soil increases chlorophyll content and gas exchange in yellow passion fruit. Moreover, photosynthetic rates were not limited by a 30% reduction in irrigation depth and increased in plants grown in 128-dm3 planting holes with hydroretentive polymer. Based on yield results, irrigation depths can be reduced to 70% of the ETc by applying hydroretentive polymer in 64-dm3 planting holes.","PeriodicalId":21921,"journal":{"name":"Semina: Ciências Agrárias","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138994636","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}

{"title":"Association between the perineal hygiene score at calving, puerperal uterine disorders, and reproductive efficiency in crossbreed dairy cows","authors":"Laryssa de Fátima Silva, Sara Adna de Oliveira, G. Moraes, N. Reis, Ricarda Santos","doi":"10.5433/1679-0359.2023v44n6p1961","DOIUrl":"https://doi.org/10.5433/1679-0359.2023v44n6p1961","url":null,"abstract":"Retained placenta, metritis, and clinical endometritis are prevalent diseases on dairy farms, leading to economic losses and reducing the longevity of dairy cows in dairy production systems, so it is important to investigate potential predisposing factors. The aim of this study was to evaluate the relation between perineal hygiene during calving and the incidence of retained placenta, metritis, clinical endometritis and their effect on reproductive efficiency and culling rates in crossbred dairy cows. At two properties, pre calving cows (n=101) were evaluated for perineal dirtiness before and during calving, by visual observation and classified in score 1 - free of feces and dry perineum; score 2 - slight presence of feces and moist perineum; score 3 - mild-wet perineum, covered by feces (over 10% of the surface). After calving, cows were subjected by visual observation and gynecological evaluation to identify retained placenta, metritis and clinical endometritis. Cows with a hygiene score of 2 or 3 showed higher rates of retained placenta (41.9% x 14.0%), metritis (32.5% x 14.0%%) and clinical endometritis (42.5% x 15.8%) than cows with a score 1. Even though no significant effects on reproductive rates were reported, the degree of perineal dirtiness in prepartum dairy crossbred cows is associated with the incidence of post calving reproductive diseases.","PeriodicalId":21921,"journal":{"name":"Semina: Ciências Agrárias","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139173249","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}

{"title":"Produção e características morfológicas de capim marandu sob inoculação e níveis de adubação nitrogenada","authors":"Luciane da Cunha Codognoto, Jaisson dos Santos Branco, Vinicius Matias Rigo, Mariângela Silva de Matos, Lucas Sobral de Farias Rodrigues de Lima, Thassiane Telles Conde","doi":"10.5433/1679-0359.2023v44n5p1927","DOIUrl":"https://doi.org/10.5433/1679-0359.2023v44n5p1927","url":null,"abstract":"A produção e qualidade forrageira é influenciada pelo suprimento de nitrogênio, especialmente ureia, altamente sujeito a perdas por volatilização. Alternativamente, surge tecnologia que reduz a liberação de nitrogênio, restringindo as perdas pelo recobrimento do fertilizante com polímeros. Ainda, como possibilidade de reduzir a dependência externa de nitrogênio, decorre a combinação de microrganismos edáficos multifuncionais capazes de captar nitrogênio atmosférico e disponibilizá-lo às plantas forrageiras. Assim, objetivou-se avaliar inoculação de sementes e o uso de ureia revestida na produção de massa seca aérea e radicular e características morfológicas de capim Marandu (Urochloa brizantha cv. Marandu). Experimento em vasos foi organizado em delineamento inteiramente casualizado, com 4 repetições, em esquema fatorial 5 x 4 x 4. Foram empregadas 5 dosagens de adubação nitrogenada (50, 100, 150, 200 e 250 kg ha-1 de N), aplicado em dose única, utilizando o fertilizante sintético ureia. Os fatores constituíram 4 técnicas: adubação com ureia; adubação ureia revestida; sementes de capim Marandu tratadas com inoculante comercial e adubação com ureia; e, sementes de capim Marandu tratadas com inoculante comercial e adubação com ureia revestida. As observações (altura do dossel forrageiro; número de perfilhos por vaso; e, massa aérea de forragem) foram obtidas com frequência de 21 dias, totalizando quatro cortes avaliativos sequenciais. Massa seca de raiz foi obtida por medida única, no corte 4, organizado em esquema fatorial 5 x 4, com quatro repetições. Sob umidade adequada no solo, dosagem de 50 kg ha-1 de nitrogênio, utilizando ureia convencional, caracteriza provisão econômica e ambiental à altura do dossel de capim Marandu. Dosagem de nitrogênio até 200 kg ha-1 promove aumento no número de perfilhos e; dosagem igual e superior, asseguram manutenção do potencial de produção de massa de forragem por até 2 cortes. Ureia convencional viabilizou superior produção de massa de raízes de capim Marandu, nas dosagens de nitrogênio entre 150 e 250 kg ha-1.","PeriodicalId":21921,"journal":{"name":"Semina: Ciências Agrárias","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138975593","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}

{"title":"Molecular identification of bovine gammaherpesvirus 6 in water buffaloes (Bubalus bubalis) with histological evidence of pulmonary and intestinal lesions","authors":"Mariana Motta de Castro, A. M. Dall Agnol, Vanessa Resende Rocha Tavares, A. A. C. Xavier, Flavia Helena Pereira Silva, Julia Raisa Ximenes Figueiredo, Rafaelli Ferreira Almeida, A. Alfieri, S. A. Headley","doi":"10.5433/1679-0359.2023v44n5p1879","DOIUrl":"https://doi.org/10.5433/1679-0359.2023v44n5p1879","url":null,"abstract":"Bovine gammaherpesvirus 6 (BoGHV6), formerly known as bovine lymphotropic virus, belongs to the genus Macavirus, which includes the porcine lymphotropic herpesviruses (PLHV) and members collectively referred to as malignant catarrhal fever virus (MVFV) group. This study investigated the possible participation of BoGHV6 in the development of intestinal and pulmonary diseases of buffaloes. Intestinal and pulmonary fragments were obtained from 19 buffaloes from Goiás, Central-western Brazil. Histopathology revealed interstitial pneumonia in all pulmonary fragments evaluated, while two of these had suppurative bronchopneumonia. Furthermore, all intestinal fragments demonstrated atrophic enteritis. BoGHV6 DNA was amplified from 31.6% (6/19) of the buffaloes with interstitial pneumonia and in 26.3% (5/19) with atrophic enteritis. The phylogenetic evaluation revealed that the strain of BoGHV6 amplified from these buffaloes had 100% nucleotide (nt) sequence identity with the reference strains of BoGHV6, but only 69.5 to 73.7% and 65.8 – 69.5% nt sequence identity with members of the MCFV and the PLHV, respectively. Additionally, molecular assays to detect important pathogens of ruminants did not amplify the respective nucleic acids in the tissues evaluated.  These results demonstrated that BoGHV6 was amplified from tissues of buffaloes with histopathologic diagnoses of interstitial pneumonia and atrophic enteritis, suggesting the possible participation of this virus in the development of the intestinal and pulmonary lesions herein identified.","PeriodicalId":21921,"journal":{"name":"Semina: Ciências Agrárias","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138971767","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}

{"title":"Parâmetros de fermentação in vitro de palha de braquiária processada ou não processada e subprodutos do processamento de batata e mandioca","authors":"Bruna Cardoso Braga, Ricardo Augusto Mendonça Vieira, Severino Delmar Junqueira Vilela, Raphael dos Santos Gomes, Paulo Gustavo Macedo de Almeida Martins, F. Leonel","doi":"10.5433/1679-0359.2023v44n5p1895-1908","DOIUrl":"https://doi.org/10.5433/1679-0359.2023v44n5p1895-1908","url":null,"abstract":"Nosso objetivo foi caracterizar a cinética de degradação de resíduos agroindustriais fibrosos e amiláceos que podem ser utilizados na alimentação de ruminantes. Foram avaliados feno de palha de braquiária não processado (UBH), feno de palha de braquiária processado (briquetagem) (PBH), um subproduto amiláceo do processamento de batata (SBP) e fécula de mandioca (CST). Duas dietas foram formuladas: uma incluindo UBH e CST (UBH-CSTd); e o outro PBH e SBP (PBH-SBPd). Para o estudo da cinética de degradação, foi utilizada a técnica de fermentação de produção cumulativa de gás in vitro, na qual o modelo Monomolecular-G3G1 de dois compartimentos forneceu um ajuste mais provável. Os volumes cumulativos de gás produzidos foram 23,2 (UBH), 29,6 (PBH), 39,1 (SBP), 36,6 (CST), 27,9 (UBH-CSTd) e 28,5 (PBH-SBPd) mL por 0,1 g de matéria seca. Os alimentos amiláceos apresentaram fermentação mais intensa nas primeiras horas. Essa fermentação ágil ocorre porque se trata de um alimento solúvel e/ou rapidamente degradável que contém uma quantidade muito pequena de matéria fibrosa. Já para os alimentos fibrosos, UBH e PBH, a fermentação ocorreu mais lentamente nas primeiras horas, liberando menos gases. Como a fibra tem uma parte lentamente degradável e insolúvel, a fase assintótica demora mais para ser alcançada. Já as dietas apresentaram fermentação intermediária às dos alimentos amiláceos e fibrosos, o que acompanhou fielmente o perfil de produção de gases de seus ingredientes. Ambas as dietas apresentaram menores valores de k1 e maiores valores de k2 quando comparadas à silagem de milho. Este resultado confirma a real possibilidade de utilização dos dejetos estudados na alimentação de ruminantes. Ou seja, além de serem ingredientes com potencial de utilização na produção de ruminantes, a utilização de subprodutos na alimentação animal pode eliminar um problema substancial de poluição para a indústria.","PeriodicalId":21921,"journal":{"name":"Semina: Ciências Agrárias","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139001783","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}

{"title":"Fermentative profile and nutritive value of maize, legume and mixed silage","authors":"Luciana Maria da Silva, K. Costa, J. A. G. E. Silva, João Victor Campos Pinho Costa, Adriano Carvalho Costa, Eduardo da Costa Severiano, P. B. Fernandes, Katryne Jordana de Oliveira, Kamilly Tiffany Magalhães Mendonça, Gercileny Oliveira Rodrigues","doi":"10.5433/1679-0359.2023v44n5p1909","DOIUrl":"https://doi.org/10.5433/1679-0359.2023v44n5p1909","url":null,"abstract":"The partial substitution of maize by tropical legumes for the production of silage has aroused interest, for bringing benefits of increasing the crude protein content of corn-only silage, constituting an important alternative for the production of food in a more sustainable way. In this context, the objective of this study was to evaluate the effect of addition 30% tropical legumes on the fermentative characteristics and nutritive value of maize silage. The experimental design was entirely randomized with three replications. The treatments consisted of the following silages: Maize; Stylosanthes cv. Campo Grande, Stylosanthes cv. Bela: Pigeon pea (Cajanus cajan cv. BRS Mandarim), maize + 30% Campo Grande; maize + 30% Bela and maize + 30% Pigeon pea, totaling 21 experimental silos. The results show that exclusive legume silage without preservatives present fermentative losses that compromise the silage quality. Addition of 30% legumes to maize silage improves the nutritional quality of the silage without compromising its fermentation profile. Stylosanthes cv. Campo Grande and Bela are the most recommended locations for maize silage. Thus, a mixed silage of maize and legumes is an alternative to improve the crude protein content of exclusive maize exclusive silage, greater sustainability, and reduced fermentative losses of legume silages.","PeriodicalId":21921,"journal":{"name":"Semina: Ciências Agrárias","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138971645","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}