COMPARISONS BETWEEN INTAKE VALUES OBSERVED AND PREDICTED BY NUTRITIONAL SYSTEMS FOR CONFINED NELLORE CATTLE
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.14393/BJ-V37N0A2021-54149 http://hdl.handle.net/11449/223490 |
Resumo: | This study compared the dry matter intake (DMI) of Nellore heifers and bulls in the feedlot, predicted by the BR-Corte (2010 and 2016) and NRC (2000) nutritional systems. Hence, two experiments were conducted in a completely randomized design. The first one used 47 Nellore bulls, not castrated, with an average initial weight of 413 kg, and 19 months of age. The second experiment used 24 Nellore heifers with an average initial weight of 300 kg and 23 months of age. The accuracy and approximation of the DMI estimates by the nutritional systems were adjusted with the simple linear regression model and the root mean square error of prediction (RMSEP). The DMI was 8.06 kg day-1 for Nellore heifers and 11.54 kg day-1 for bulls, which are higher than the values predicted by the nutritional systems. The NRC (2000) and BR-Corte (2010 and 2016) underestimated DMI in 20.84, 20.09, and 19.35% for heifers and 28.07, 16.20, and 11.78% for bulls, respectively. It was concluded that the BR-Corte 2010 and 2016 were the most suitable models to estimate the DMI of Nellore heifers and bulls for higher precision and accuracy. |
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COMPARISONS BETWEEN INTAKE VALUES OBSERVED AND PREDICTED BY NUTRITIONAL SYSTEMS FOR CONFINED NELLORE CATTLEElectronic Feeding SystemsEquationsMeasurementNutritionThis study compared the dry matter intake (DMI) of Nellore heifers and bulls in the feedlot, predicted by the BR-Corte (2010 and 2016) and NRC (2000) nutritional systems. Hence, two experiments were conducted in a completely randomized design. The first one used 47 Nellore bulls, not castrated, with an average initial weight of 413 kg, and 19 months of age. The second experiment used 24 Nellore heifers with an average initial weight of 300 kg and 23 months of age. The accuracy and approximation of the DMI estimates by the nutritional systems were adjusted with the simple linear regression model and the root mean square error of prediction (RMSEP). The DMI was 8.06 kg day-1 for Nellore heifers and 11.54 kg day-1 for bulls, which are higher than the values predicted by the nutritional systems. The NRC (2000) and BR-Corte (2010 and 2016) underestimated DMI in 20.84, 20.09, and 19.35% for heifers and 28.07, 16.20, and 11.78% for bulls, respectively. It was concluded that the BR-Corte 2010 and 2016 were the most suitable models to estimate the DMI of Nellore heifers and bulls for higher precision and accuracy.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Post-Graduate Program in Veterinary Science Federal University of Uberlândia, Minas GeraisSchool of Veterinary Medicine, Minas GeraisTexas A&M University Department of Animal SciencePost-Graduate Program in Animal Genetic Improvement São Paulo State University “Júlio de Mesquita Filho”, Minas GeraisPost-Graduate Program in Animal Genetic Improvement São Paulo State University “Júlio de Mesquita Filho”, Minas GeraisUniversidade Federal de Uberlândia (UFU)School of Veterinary MedicineTexas A&M UniversityUniversidade Estadual Paulista (UNESP)Ferreira, Aline Maria Soaresda Silva, Simone Pedrode Faria, Carina Carina UbirajaraMendes, Egleu Diomedes MarinhoFelipe, Ester Ferreira [UNESP]2022-04-28T19:50:55Z2022-04-28T19:50:55Z2021-01-12info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.14393/BJ-V37N0A2021-54149Bioscience Journal, v. 37.1981-31631516-3725http://hdl.handle.net/11449/22349010.14393/BJ-V37N0A2021-541492-s2.0-85124912549Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBioscience Journalinfo:eu-repo/semantics/openAccess2022-04-28T19:50:55Zoai:repositorio.unesp.br:11449/223490Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:23:31.984557Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
COMPARISONS BETWEEN INTAKE VALUES OBSERVED AND PREDICTED BY NUTRITIONAL SYSTEMS FOR CONFINED NELLORE CATTLE |
title |
COMPARISONS BETWEEN INTAKE VALUES OBSERVED AND PREDICTED BY NUTRITIONAL SYSTEMS FOR CONFINED NELLORE CATTLE |
spellingShingle |
COMPARISONS BETWEEN INTAKE VALUES OBSERVED AND PREDICTED BY NUTRITIONAL SYSTEMS FOR CONFINED NELLORE CATTLE Ferreira, Aline Maria Soares Electronic Feeding Systems Equations Measurement Nutrition |
title_short |
COMPARISONS BETWEEN INTAKE VALUES OBSERVED AND PREDICTED BY NUTRITIONAL SYSTEMS FOR CONFINED NELLORE CATTLE |
title_full |
COMPARISONS BETWEEN INTAKE VALUES OBSERVED AND PREDICTED BY NUTRITIONAL SYSTEMS FOR CONFINED NELLORE CATTLE |
title_fullStr |
COMPARISONS BETWEEN INTAKE VALUES OBSERVED AND PREDICTED BY NUTRITIONAL SYSTEMS FOR CONFINED NELLORE CATTLE |
title_full_unstemmed |
COMPARISONS BETWEEN INTAKE VALUES OBSERVED AND PREDICTED BY NUTRITIONAL SYSTEMS FOR CONFINED NELLORE CATTLE |
title_sort |
COMPARISONS BETWEEN INTAKE VALUES OBSERVED AND PREDICTED BY NUTRITIONAL SYSTEMS FOR CONFINED NELLORE CATTLE |
author |
Ferreira, Aline Maria Soares |
author_facet |
Ferreira, Aline Maria Soares da Silva, Simone Pedro de Faria, Carina Carina Ubirajara Mendes, Egleu Diomedes Marinho Felipe, Ester Ferreira [UNESP] |
author_role |
author |
author2 |
da Silva, Simone Pedro de Faria, Carina Carina Ubirajara Mendes, Egleu Diomedes Marinho Felipe, Ester Ferreira [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de Uberlândia (UFU) School of Veterinary Medicine Texas A&M University Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Ferreira, Aline Maria Soares da Silva, Simone Pedro de Faria, Carina Carina Ubirajara Mendes, Egleu Diomedes Marinho Felipe, Ester Ferreira [UNESP] |
dc.subject.por.fl_str_mv |
Electronic Feeding Systems Equations Measurement Nutrition |
topic |
Electronic Feeding Systems Equations Measurement Nutrition |
description |
This study compared the dry matter intake (DMI) of Nellore heifers and bulls in the feedlot, predicted by the BR-Corte (2010 and 2016) and NRC (2000) nutritional systems. Hence, two experiments were conducted in a completely randomized design. The first one used 47 Nellore bulls, not castrated, with an average initial weight of 413 kg, and 19 months of age. The second experiment used 24 Nellore heifers with an average initial weight of 300 kg and 23 months of age. The accuracy and approximation of the DMI estimates by the nutritional systems were adjusted with the simple linear regression model and the root mean square error of prediction (RMSEP). The DMI was 8.06 kg day-1 for Nellore heifers and 11.54 kg day-1 for bulls, which are higher than the values predicted by the nutritional systems. The NRC (2000) and BR-Corte (2010 and 2016) underestimated DMI in 20.84, 20.09, and 19.35% for heifers and 28.07, 16.20, and 11.78% for bulls, respectively. It was concluded that the BR-Corte 2010 and 2016 were the most suitable models to estimate the DMI of Nellore heifers and bulls for higher precision and accuracy. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-01-12 2022-04-28T19:50:55Z 2022-04-28T19:50:55Z |
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 |
http://dx.doi.org/10.14393/BJ-V37N0A2021-54149 Bioscience Journal, v. 37. 1981-3163 1516-3725 http://hdl.handle.net/11449/223490 10.14393/BJ-V37N0A2021-54149 2-s2.0-85124912549 |
url |
http://dx.doi.org/10.14393/BJ-V37N0A2021-54149 http://hdl.handle.net/11449/223490 |
identifier_str_mv |
Bioscience Journal, v. 37. 1981-3163 1516-3725 10.14393/BJ-V37N0A2021-54149 2-s2.0-85124912549 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Bioscience Journal |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129423325528064 |