Effect of slow-release urea microencapsulated in beeswax and its inclusion in ruminant diets

Registro completo de metadados
Autor(es): dc.contributorUniv Fed Campina Grande-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniv Fed Ceara-
Autor(es): dc.contributorUniversidade Federal da Bahia (UFBA)-
Autor(es): dc.creatorCarvalho, A. de B.-
Autor(es): dc.creatorSilva, A. L. da-
Autor(es): dc.creatorSilva, A. M. de A.-
Autor(es): dc.creatorNetto, A. J.-
Autor(es): dc.creatorMedeiros, T. T. B. de-
Autor(es): dc.creatorAraujo Filho, J. M.-
Autor(es): dc.creatorAgostini, D. L. da S. [UNESP]-
Autor(es): dc.creatorOliveira, D. L. de-
Autor(es): dc.creatorMazzetto, S. E.-
Autor(es): dc.creatorKotzebue, L. R.-
Autor(es): dc.creatorOliveira, J. R.-
Autor(es): dc.creatorOliveira, R. L.-
Autor(es): dc.creatorBezerra, L. R.-
Data de aceite: dc.date.accessioned2022-02-22T00:08:59Z-
Data de disponibilização: dc.date.available2022-02-22T00:08:59Z-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2019-10-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.smallrumres.2019.09.005-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/196278-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/196278-
Descrição: dc.descriptionThe objective of this study was to evaluate the effects of including slow-release urea microencapsulated in beeswax in the diet of adult sheep on intake, digestibility, and nitrogen (N) balance. Two microencapsulated system formulations were developed with ratios (wt/wt) of 1:2 (U(ME)1:2) and 1:2 + sulfur (U(ME)1:2 + S) between the core (urea) and encapsulant (beeswax). The U(ME)1:2 formulation had greater yield values, microencapsulation efficiency and thermal stability than U(ME)1:2 + S. The most efficient formulation (U(ME)1:2) was added to the diet of twenty-four uncastrated male sheep, adult, crossbred Santa Ines, 9 months old with an average body weight of 28.2 kg +/- 0.6 kg. The experimental arrangement was a completely randomized design in which the animals were distributed into four treatments that included different levels of urea microencapsulated in beeswax, U(ME)1:2 without S (0, 1.5, 3.0 and 4.5% in total dry matter (DM)), and six replicates in a total experimental period of 19 days, with 14 days for adaptation. The inclusion of urea microencapsulated in beeswax did not affect (P > 0.05) DM, crude protein, ether extract, ash, total carbohydrate or crude energy intake or digestibility. In addition, the nonfibrous carbohydrate (NFC), neutral detergent fiber (NDF), and acid detergent fiber (ADF) intake, N intake, N excretion (urinary and fecal), N absorbed, N retained, N retention/N intake and N retained/N absorbed were not affected (P > 0.05) by the inclusion of urea micro-encapsulated in beeswax. However, there was a linear increase in NDF (P = 0.031) and ADF (P = 0.004) digestibility as the inclusion level of encapsulated urea increased from 0 to 4.5%. The NFC digestibility showed a quadratic increase (P < 0.001) with the greatest digestibility at 3.0% microencapsulated urea. Beeswax was shown to be an efficient microencapsulant to obtain microparticles containing urea, and the formulation of U(ME)1:2 without the addition of S is recommended since it showed better yield and efficiency than the formulation with S. The inclusion of up to 4.5% urea microencapsulated in the lipid matrix of beeswax is recommended to improve NDF and ADF digestibility without affecting intake and N balance.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionUniv Fed Campina Grande, Dept Anim Sci, Univ Ave,Caixa Postal 61, Patos de Minas, Paraiba, Brazil-
Descrição: dc.descriptionState Univ Sao Paulo, Dept Phys Chem & Biol, Roberto Simonsen St 305, BR-19060900 Presidente Prudente, SP, Brazil-
Descrição: dc.descriptionUniv Fed Ceara, Dept Organ & Inorgan Chem, Contorno St, BR-60451970 Fortaleza, Ceara, Brazil-
Descrição: dc.descriptionUniv Fed Bahia, Dept Anim Sci, Adhemar Barros Ave 500, BR-40170110 Salvador, BA, Brazil-
Descrição: dc.descriptionState Univ Sao Paulo, Dept Phys Chem & Biol, Roberto Simonsen St 305, BR-19060900 Presidente Prudente, SP, Brazil-
Formato: dc.format56-63-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier B.V.-
Relação: dc.relationSmall Ruminant Research-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectIntake-
Palavras-chave: dc.subjectMicrospheres-
Palavras-chave: dc.subjectN-NH3-
Palavras-chave: dc.subjectNitrogen balance-
Título: dc.titleEffect of slow-release urea microencapsulated in beeswax and its inclusion in ruminant diets-
Tipo de arquivo: dc.typelivro digital-
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