Performance and carcass characteristics of Santa Inês lambs fed protein diets

Detalhes bibliográficos
Autor(a) principal: Silva, Janaina L.
Data de Publicação: 2019
Outros Autores: Ribeiro, Karina G., Pereira, Odilon G., Valadares Filho, Sebastião C., Pina, Douglas S., Paulino, Pedro V.R.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://doi.org/10.19084/rca.16868
Resumo: The objective of this study was to determine the best level and the effect of diets containing different levels of crude protein (CP) on performance and carcass characteristics of feedlot Santa Inês lambs. In trial 1, eight intact lambs with an average live weight of 25.8 kg were distributed in two 4 x 4 Latin squares and were kept in individual metabolic cages. The total collection of feces was used to estimate digestibility and the total urine collection was used to determine the nitrogen balance. In trial 2, 32 intact lambs with an average live weight of 22.0 kg were distributed in an completely randomized design with eight repetitions and were kept in individual metabolic cages. For both trials, the diets consisted of four levels of CP (14.25; 15.50; 16.75; and 18.0%), with 40% corn silage and 60% concentrate in the dry matter. The increase in crude protein levels in the diets did not alter the digestibility, performance, or carcass characteristics of feedlot-finished Santa Inês lambs; therefore, a level of 14.25% crude protein is recommended, as it allowed for satisfactory gains in animal performance.
id RCAP_20c5ac0add1981d9e77cdf44172156c5
oai_identifier_str oai:ojs.revistas.rcaap.pt:article/16868
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Performance and carcass characteristics of Santa Inês lambs fed protein dietsDesempenho e características de carcaça de cordeiros Santa Inês alimentados com dietas proteicasGeralThe objective of this study was to determine the best level and the effect of diets containing different levels of crude protein (CP) on performance and carcass characteristics of feedlot Santa Inês lambs. In trial 1, eight intact lambs with an average live weight of 25.8 kg were distributed in two 4 x 4 Latin squares and were kept in individual metabolic cages. The total collection of feces was used to estimate digestibility and the total urine collection was used to determine the nitrogen balance. In trial 2, 32 intact lambs with an average live weight of 22.0 kg were distributed in an completely randomized design with eight repetitions and were kept in individual metabolic cages. For both trials, the diets consisted of four levels of CP (14.25; 15.50; 16.75; and 18.0%), with 40% corn silage and 60% concentrate in the dry matter. The increase in crude protein levels in the diets did not alter the digestibility, performance, or carcass characteristics of feedlot-finished Santa Inês lambs; therefore, a level of 14.25% crude protein is recommended, as it allowed for satisfactory gains in animal performance.O objetivo deste estudo foi determinar o melhor nível e o efeito de dietas contendo diferentes níveis de proteína bruta (PB) sobre o desempenho e características de carcaça em cordeiros Santa Inês confinados. No ensaio 1, oito cordeiros, não castrados, com peso vivo médio de 25,8 kg foram distribuídos em dois quadrados latinos 4 x 4, sendo mantidos em gaiolas metabólicas individuais. A colheita total de fezes foi utilizada para estimar a digestibilidade e o método de colheita total de urina foi utilizado para determinar o balanço de nitrogénio. No ensaio 2, 32 cordeiros, não castrados, com peso vivo médio de 22,0 kg, foram distribuídos num delineamento inteiramente casualizado, com oito repetições e mantidos em gaiolas metabólicas individuais. Em ambos os ensaios, as dietas consistiram em quatro níveis de PB (14,25; 15,50; 16,75 e 18,0%); com 40% de silagem de milho e 60% de concentrado, com base na matéria seca. O aumento nos níveis de proteína bruta nas dietas não alterou a digestibilidade dos nutrientes, desempenho ou as características da carcaça nos cordeiros Santa Inês terminados em confinamento, portanto, recomenda-se o nível de 14,25% de PB, por permitir ganhos satisfatórios no desempenho de carcaça.Sociedade de Ciências Agrárias de Portugal2019-01-21T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://doi.org/10.19084/rca.16868eng2183-041X0871-018XSilva, Janaina L.Ribeiro, Karina G.Pereira, Odilon G.Valadares Filho, Sebastião C.Pina, Douglas S.Paulino, Pedro V.R.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-09-06T09:25:01Zoai:ojs.revistas.rcaap.pt:article/16868Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:31:09.384751Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Performance and carcass characteristics of Santa Inês lambs fed protein diets
Desempenho e características de carcaça de cordeiros Santa Inês alimentados com dietas proteicas
title Performance and carcass characteristics of Santa Inês lambs fed protein diets
spellingShingle Performance and carcass characteristics of Santa Inês lambs fed protein diets
Silva, Janaina L.
Geral
title_short Performance and carcass characteristics of Santa Inês lambs fed protein diets
title_full Performance and carcass characteristics of Santa Inês lambs fed protein diets
title_fullStr Performance and carcass characteristics of Santa Inês lambs fed protein diets
title_full_unstemmed Performance and carcass characteristics of Santa Inês lambs fed protein diets
title_sort Performance and carcass characteristics of Santa Inês lambs fed protein diets
author Silva, Janaina L.
author_facet Silva, Janaina L.
Ribeiro, Karina G.
Pereira, Odilon G.
Valadares Filho, Sebastião C.
Pina, Douglas S.
Paulino, Pedro V.R.
author_role author
author2 Ribeiro, Karina G.
Pereira, Odilon G.
Valadares Filho, Sebastião C.
Pina, Douglas S.
Paulino, Pedro V.R.
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Silva, Janaina L.
Ribeiro, Karina G.
Pereira, Odilon G.
Valadares Filho, Sebastião C.
Pina, Douglas S.
Paulino, Pedro V.R.
dc.subject.por.fl_str_mv Geral
topic Geral
description The objective of this study was to determine the best level and the effect of diets containing different levels of crude protein (CP) on performance and carcass characteristics of feedlot Santa Inês lambs. In trial 1, eight intact lambs with an average live weight of 25.8 kg were distributed in two 4 x 4 Latin squares and were kept in individual metabolic cages. The total collection of feces was used to estimate digestibility and the total urine collection was used to determine the nitrogen balance. In trial 2, 32 intact lambs with an average live weight of 22.0 kg were distributed in an completely randomized design with eight repetitions and were kept in individual metabolic cages. For both trials, the diets consisted of four levels of CP (14.25; 15.50; 16.75; and 18.0%), with 40% corn silage and 60% concentrate in the dry matter. The increase in crude protein levels in the diets did not alter the digestibility, performance, or carcass characteristics of feedlot-finished Santa Inês lambs; therefore, a level of 14.25% crude protein is recommended, as it allowed for satisfactory gains in animal performance.
publishDate 2019
dc.date.none.fl_str_mv 2019-01-21T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://doi.org/10.19084/rca.16868
url https://doi.org/10.19084/rca.16868
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2183-041X
0871-018X
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Sociedade de Ciências Agrárias de Portugal
publisher.none.fl_str_mv Sociedade de Ciências Agrárias de Portugal
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799130177621458944

Registros relacionados