Marine microalgae meal (Schizochytrium sp.) influence on intake, in vivo fermentation parameters and in vitro gas production and digestibility in sheep diets is dose-dependent

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorFederal University of Espírito Santo-
Autor(es): dc.contributorSan Roque-
Autor(es): dc.contributorFederal University of Western Pará-
Autor(es): dc.creatorRojas-Meza, Diego A.-
Autor(es): dc.creatorda Silva Sobrinho, Américo Garcia-
Autor(es): dc.creatorAlmeida, Marco Tulio Costa-
Autor(es): dc.creatorBorghi, Thiago H.-
Autor(es): dc.creatorGranja-Salcedo, Yury T.-
Autor(es): dc.creatorde Lima Valença, Roberta-
Autor(es): dc.creatorde Andrade, Nomaiací-
Autor(es): dc.creatorCirne, Luis Gabriel Alves-
Autor(es): dc.creatorEzequiel, Jane Maria Bertocco-
Data de aceite: dc.date.accessioned2025-08-21T22:15:34Z-
Data de disponibilização: dc.date.available2025-08-21T22:15:34Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.anifeedsci.2024.116130-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/301174-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/301174-
Descrição: dc.descriptionThe objective of this study was to evaluate the dry matter intake (DMI), intake of nutrients and in vivo ruminal fermentation in wethers fed diets without or with 2 or 4 % of marine microalgae meal (Schizochytrium sp.) as a source of docosahexaenoic polyunsaturated fatty acid (DHA; C22:6 n-3), as well as the total gas production and digestibility of the experimental diets using in vitro techniques. Six Santa Inês wethers with a body weight of 55.6 ± 5.20 kg and 18 months of age fitted with a ruminal cannula, were used and housed in individual stalls. The experimental design consisted of a double 3 ×3 Latin square (three treatments and three periods) with each experimental period lasting 21 days (14 days for adaptation to diets, 5 days for sample collection and 2 days of blank time between periods), for a total of 63 days. Animals fed 4 % microalgae meal showed lower DMI (P<0.05; 1,14 vs. 0,86 kg/d) and lower intake of nutrients (P<0.05), except for ether extract (EE; P=0.967), compared to animals not fed microalgae. Wethers that were not fed marine microalgae had lower ruminal pH just two hours after feeding (P=0.042) and lower concentrations of ammoniacal nitrogen (NH3-N) in the ruminal fluid at all sampling times (P = 0.011) compared to wethers fed diets with 2 and 4 % level inclusion. The addition of marine microalgae meal did not have an effect on heat production and in vitro gas production (P>0.05). The in vitro digestibility of non-fibrous carbohydrates (NFC) increased (P = 0.033) with the inclusion of marine microalgae in the diet, being higher in the 4 % treatment compared to the others. Additionally, marine microalgae meal significantly reduced (P = 0.002; 0.55–0.47 g/g of DM) the in vitro digestibility of neutral detergent fiber corrected for ash and protein (NDF). The inclusion of marine microalgae meal Schizochytrium sp. as a DHA source did not negatively affect ruminal fermentation. However, it compromised dry matter and nutrients intake, as well as NDF digestibility in animals fed 4 % microalgae while a reduction on DMI as well as intake of nutrients at 2 % inclusion was not significant. Therefore, it is recommended to use marine microalgae meal in the feeding of wethers under tropical conditions at a concentration of 2 % of the diet.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionDepartment of Animal Science São Paulo State University (Unesp) School of Agricultural and Veterinarian Sciences, SP-
Descrição: dc.descriptionDepartment of Animal Science Federal University of Espírito Santo, ES-
Descrição: dc.descriptionCorporación Colombiana de Investigación Agropecuaria AGROSAVIA Centro de Investigación el Nus Corregimiento San José del Nus San Roque-
Descrição: dc.descriptionDepartment of Animal Science Institute of Biodiversity and Forestry Federal University of Western Pará, PA-
Descrição: dc.descriptionDepartment of Animal Science São Paulo State University (Unesp) School of Agricultural and Veterinarian Sciences, SP-
Descrição: dc.descriptionCNPq: 132413/2015–9-
Descrição: dc.descriptionFAPESP: 2016/01159–1-
Idioma: dc.languageen-
Relação: dc.relationAnimal Feed Science and Technology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAmmoniacal nitrogen-
Palavras-chave: dc.subjectfatty acids-
Palavras-chave: dc.subjectlipids-
Palavras-chave: dc.subjectmetabolism-
Palavras-chave: dc.subjectmethane-
Palavras-chave: dc.subjectruminal pH-
Título: dc.titleMarine microalgae meal (Schizochytrium sp.) influence on intake, in vivo fermentation parameters and in vitro gas production and digestibility in sheep diets is dose-dependent-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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