Performance and serum chemistry profile of lambs fed on rations with increasing levels of urea
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/25742 |
Resumo: | Feed intake and efficiency, animal performance, and protein and energy metabolism were studied in lambs that were fed on increasing levels of urea (0.0, 0.5, 1.0, and 1.5% of dry matter [DM]). A completely randomized design was used, with four treatments (urea levels) and six replicates. The lambs were fed ad libitum for 56 days until they reached an average body weight of 35 kg. The rations were composed of 34% Tifton 85 hay (Cynodon spp.) and 66% concentrate. Crude protein (CP) constituted 17% of the diet on a dry matter basis, and total digestible nutrients (TDN) accounted for 65%, on average. The dry matter intake (DMI) and crude protein intake (CPI) were not influenced by the urea levels in the diet, presenting average values of 1.175 and 0.206 kg animal-1 day-1, respectively. The average daily gain (ADG), feed conversion ratio (FCR) and gross feed efficiency (GFE) were also not influenced by urea levels (0.225 kg day-1, 5.33 kg DM kg gain-1 and 0.195 kg gain kg DM-1, respectively). Except for urea and glucose concentrations, blood parameters did not change with increasing urea in the diets. The mean values for total protein, albumin, globulin and creatinine in the serum were 7.11 g dL-1, 3.36 g dL-1, 3.75 g dL-1 and 0.91 mg dL-1, respectively. Serum urea decreased linearly and serum glucose increased linearly with urea levels in the diet. The addition of 1.5% of urea to the diets did not change feed intake and efficiency or animal performance, and did not cause metabolic disorders in feedlot lambs in the finishing phase. |
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Semina. Ciências Agrárias (Online) |
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Performance and serum chemistry profile of lambs fed on rations with increasing levels of ureaDesempenho e perfil metabólico de cordeiros alimentados com ração contendo níveis crescentes de ureiaBloodFinishingGlucoseNitrogenSheep.GlicoseNitrogênioOvinosSangueTerminação.Feed intake and efficiency, animal performance, and protein and energy metabolism were studied in lambs that were fed on increasing levels of urea (0.0, 0.5, 1.0, and 1.5% of dry matter [DM]). A completely randomized design was used, with four treatments (urea levels) and six replicates. The lambs were fed ad libitum for 56 days until they reached an average body weight of 35 kg. The rations were composed of 34% Tifton 85 hay (Cynodon spp.) and 66% concentrate. Crude protein (CP) constituted 17% of the diet on a dry matter basis, and total digestible nutrients (TDN) accounted for 65%, on average. The dry matter intake (DMI) and crude protein intake (CPI) were not influenced by the urea levels in the diet, presenting average values of 1.175 and 0.206 kg animal-1 day-1, respectively. The average daily gain (ADG), feed conversion ratio (FCR) and gross feed efficiency (GFE) were also not influenced by urea levels (0.225 kg day-1, 5.33 kg DM kg gain-1 and 0.195 kg gain kg DM-1, respectively). Except for urea and glucose concentrations, blood parameters did not change with increasing urea in the diets. The mean values for total protein, albumin, globulin and creatinine in the serum were 7.11 g dL-1, 3.36 g dL-1, 3.75 g dL-1 and 0.91 mg dL-1, respectively. Serum urea decreased linearly and serum glucose increased linearly with urea levels in the diet. The addition of 1.5% of urea to the diets did not change feed intake and efficiency or animal performance, and did not cause metabolic disorders in feedlot lambs in the finishing phase.Avaliou-se o consumo de alimento, o desempenho animal, a eficiência alimentar, e o metabolismo proteico e energético de cordeiros alimentados com rações contendo níveis crescentes de ureia (0,0; 0,5; 1,0; 1,5% da matéria seca - MS). O delineamento foi inteiramente casualizado com quatro tratamentos (níveis de inclusão de ureia) e seis repetições por tratamento. Os cordeiros foram alimentados à vontade por 56 dias até atingirem peso corporal (PC) médio de 35 kg. As rações foram compostas por 34% de feno de Tifton 85 (Cynodon spp.) e 66% de concentrado, com 17% de proteína bruta (PB) e 65% de nutrientes digestíveis totais (NDT), em média, com base na matéria seca (MS). O consumo de matéria seca (CMS) e de proteína bruta (CPB) não foram influenciados pelos níveis de inclusão de ureia na ração, apresentando valores médios de 1,175 e 0,206 kg animal-1 dia-1. O ganho médio diário (GMD), a conversão alimentar (CA) e a eficiência alimentar bruta (EAB) também não foram influenciados pelos níveis de inclusão de ureia e apresentaram valores médios de 0,225 kg dia-1, 5,33 kg de MS kg de ganho-1 e 0,195 kg de ganho kg de MS-1. Com exceção da ureia e da glicose, os metabólitos sanguíneos não foram influenciados pelos níveis de inclusão de ureia na ração. Os valores médios para as concentrações séricas de proteínas totais, albumina, globulinas e creatinina foram 7,11 g dL-1, 3,36 g dL-1, 3,75 g dL-1 e 0,91 mg dL-1. A ureia sérica apresentou resposta linear decrescente, enquanto a glicose sérica de apresentou resposta linear crescente ao aumento da inclusão de ureia. A inclusão de até 1,5% de ureia na MS em rações isoproteicas não afeta o consumo de alimento, o desempenho e a eficiência alimentar, e não causa prejuízos metabólicos em cordeiros confinados na fase de terminação.UEL2017-05-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionResearchPesquisaapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2574210.5433/1679-0359.2017v38n2p919Semina: Ciências Agrárias; Vol. 38 No. 2 (2017); 919-930Semina: Ciências Agrárias; v. 38 n. 2 (2017); 919-9301679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/25742/20827Copyright (c) 2017 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessVivian, Diana RosanaGarcez Neto, Américo FróesFreitas, José AntônioFernandes, Sergio RodrigoRozanski, Sandra2022-11-16T16:54:50Zoai:ojs.pkp.sfu.ca:article/25742Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-11-16T16:54:50Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Performance and serum chemistry profile of lambs fed on rations with increasing levels of urea Desempenho e perfil metabólico de cordeiros alimentados com ração contendo níveis crescentes de ureia |
title |
Performance and serum chemistry profile of lambs fed on rations with increasing levels of urea |
spellingShingle |
Performance and serum chemistry profile of lambs fed on rations with increasing levels of urea Vivian, Diana Rosana Blood Finishing Glucose Nitrogen Sheep. Glicose Nitrogênio Ovinos Sangue Terminação. |
title_short |
Performance and serum chemistry profile of lambs fed on rations with increasing levels of urea |
title_full |
Performance and serum chemistry profile of lambs fed on rations with increasing levels of urea |
title_fullStr |
Performance and serum chemistry profile of lambs fed on rations with increasing levels of urea |
title_full_unstemmed |
Performance and serum chemistry profile of lambs fed on rations with increasing levels of urea |
title_sort |
Performance and serum chemistry profile of lambs fed on rations with increasing levels of urea |
author |
Vivian, Diana Rosana |
author_facet |
Vivian, Diana Rosana Garcez Neto, Américo Fróes Freitas, José Antônio Fernandes, Sergio Rodrigo Rozanski, Sandra |
author_role |
author |
author2 |
Garcez Neto, Américo Fróes Freitas, José Antônio Fernandes, Sergio Rodrigo Rozanski, Sandra |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Vivian, Diana Rosana Garcez Neto, Américo Fróes Freitas, José Antônio Fernandes, Sergio Rodrigo Rozanski, Sandra |
dc.subject.por.fl_str_mv |
Blood Finishing Glucose Nitrogen Sheep. Glicose Nitrogênio Ovinos Sangue Terminação. |
topic |
Blood Finishing Glucose Nitrogen Sheep. Glicose Nitrogênio Ovinos Sangue Terminação. |
description |
Feed intake and efficiency, animal performance, and protein and energy metabolism were studied in lambs that were fed on increasing levels of urea (0.0, 0.5, 1.0, and 1.5% of dry matter [DM]). A completely randomized design was used, with four treatments (urea levels) and six replicates. The lambs were fed ad libitum for 56 days until they reached an average body weight of 35 kg. The rations were composed of 34% Tifton 85 hay (Cynodon spp.) and 66% concentrate. Crude protein (CP) constituted 17% of the diet on a dry matter basis, and total digestible nutrients (TDN) accounted for 65%, on average. The dry matter intake (DMI) and crude protein intake (CPI) were not influenced by the urea levels in the diet, presenting average values of 1.175 and 0.206 kg animal-1 day-1, respectively. The average daily gain (ADG), feed conversion ratio (FCR) and gross feed efficiency (GFE) were also not influenced by urea levels (0.225 kg day-1, 5.33 kg DM kg gain-1 and 0.195 kg gain kg DM-1, respectively). Except for urea and glucose concentrations, blood parameters did not change with increasing urea in the diets. The mean values for total protein, albumin, globulin and creatinine in the serum were 7.11 g dL-1, 3.36 g dL-1, 3.75 g dL-1 and 0.91 mg dL-1, respectively. Serum urea decreased linearly and serum glucose increased linearly with urea levels in the diet. The addition of 1.5% of urea to the diets did not change feed intake and efficiency or animal performance, and did not cause metabolic disorders in feedlot lambs in the finishing phase. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-05-02 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Research Pesquisa |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/25742 10.5433/1679-0359.2017v38n2p919 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/25742 |
identifier_str_mv |
10.5433/1679-0359.2017v38n2p919 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/25742/20827 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2017 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2017 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 38 No. 2 (2017); 919-930 Semina: Ciências Agrárias; v. 38 n. 2 (2017); 919-930 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1799306075849097216 |