Different methods and times to estimate heat production in sheep fed with sunflower meal.

Detalhes bibliográficos
Autor(a) principal: GERASEEV, L. C.
Data de Publicação: 2024
Outros Autores: SANTOS, S. S., CHAVES, A. S., MACHADO, F. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1160993
http://doi.org/10.1590/0103-8478cr20230045
Resumo: The objective of this study was to assess the oxygen pulse and heart rate method (O2 P-HR) using a respiration chamber at different measurement times for estimate the heat production (HP) of lambs fed increasing levels of sunflower meal in their diet. Twenty-four lambs were assigned to four experimental diets (0, 100, 200, and 300 g of sunflower meal kg-1 DM). Heat production was estimated using the O2 P-HR (HPO2P) method and a respirometry chamber (HPRC). Measurements were obtained by simultaneously measuring heart rate (HR) and oxygen consumption over 3, 6, 9, 12, 15, 18, 21 and 24 h. A flow-through respirometry chamber for small ruminants was used to determine oxygen consumption (VO2 ) and carbon dioxide and methane production. Data on dietary treatment, measurement times and their interactions were analyzed as repeated measures using mixed model procedures and Restricted Maximum Likelihood (REML) estimation. The Pearson’s correlation coefficient was used to compare techniques. There was no effect of the different levels of sunflower meal inclusion on VO2 and heat production. The HPO2P (126.16 kcal/ BW0.75/day) was 2% higher than that of the HPRC (124.61 kcal/ BW0.75/day), and the correlation coefficients was 0.628. The coefficient of variation was greater for the HPO2P (21.33%) than for HPRC (11.44%). HR (beats/min), VO2 (mL/min/BW0.75) and O2 P-HR (mL/beat) required measurement times of 24, 15 and 9 hours, respectively. A measurement time of 24 h was necessary to ensure a more accurate estimate of the heat production using the O2 P-HR method.
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spelling Different methods and times to estimate heat production in sheep fed with sunflower meal.BioenergeticIndirect calorimetryOvinoCordeiroEnergy requirementsThe objective of this study was to assess the oxygen pulse and heart rate method (O2 P-HR) using a respiration chamber at different measurement times for estimate the heat production (HP) of lambs fed increasing levels of sunflower meal in their diet. Twenty-four lambs were assigned to four experimental diets (0, 100, 200, and 300 g of sunflower meal kg-1 DM). Heat production was estimated using the O2 P-HR (HPO2P) method and a respirometry chamber (HPRC). Measurements were obtained by simultaneously measuring heart rate (HR) and oxygen consumption over 3, 6, 9, 12, 15, 18, 21 and 24 h. A flow-through respirometry chamber for small ruminants was used to determine oxygen consumption (VO2 ) and carbon dioxide and methane production. Data on dietary treatment, measurement times and their interactions were analyzed as repeated measures using mixed model procedures and Restricted Maximum Likelihood (REML) estimation. The Pearson’s correlation coefficient was used to compare techniques. There was no effect of the different levels of sunflower meal inclusion on VO2 and heat production. The HPO2P (126.16 kcal/ BW0.75/day) was 2% higher than that of the HPRC (124.61 kcal/ BW0.75/day), and the correlation coefficients was 0.628. The coefficient of variation was greater for the HPO2P (21.33%) than for HPRC (11.44%). HR (beats/min), VO2 (mL/min/BW0.75) and O2 P-HR (mL/beat) required measurement times of 24, 15 and 9 hours, respectively. A measurement time of 24 h was necessary to ensure a more accurate estimate of the heat production using the O2 P-HR method.LUCIANA CASTRO GERASEEV, UNIVERSIDADE FEDERAL DE MINAS GERAIS; SARAH SILVA SANTOS, UNIVERSIDADE FEDERAL DE MINAS GERAIS; AMÁLIA SATURNINO CHAVES, UNIVERSIDADE FEDERAL DE JUIZ DE FORA; FERNANDA SAMARINI MACHADO, CNPGL.GERASEEV, L. C.SANTOS, S. S.CHAVES, A. S.MACHADO, F. S.2024-01-18T14:32:24Z2024-01-18T14:32:24Z2024-01-182024info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleCiência Rural, v. 54, n. 8, e20230045, 2024.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1160993http://doi.org/10.1590/0103-8478cr20230045enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2024-01-18T14:32:24Zoai:www.alice.cnptia.embrapa.br:doc/1160993Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542024-01-18T14:32:24Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Different methods and times to estimate heat production in sheep fed with sunflower meal.
title Different methods and times to estimate heat production in sheep fed with sunflower meal.
spellingShingle Different methods and times to estimate heat production in sheep fed with sunflower meal.
GERASEEV, L. C.
Bioenergetic
Indirect calorimetry
Ovino
Cordeiro
Energy requirements
title_short Different methods and times to estimate heat production in sheep fed with sunflower meal.
title_full Different methods and times to estimate heat production in sheep fed with sunflower meal.
title_fullStr Different methods and times to estimate heat production in sheep fed with sunflower meal.
title_full_unstemmed Different methods and times to estimate heat production in sheep fed with sunflower meal.
title_sort Different methods and times to estimate heat production in sheep fed with sunflower meal.
author GERASEEV, L. C.
author_facet GERASEEV, L. C.
SANTOS, S. S.
CHAVES, A. S.
MACHADO, F. S.
author_role author
author2 SANTOS, S. S.
CHAVES, A. S.
MACHADO, F. S.
author2_role author
author
author
dc.contributor.none.fl_str_mv LUCIANA CASTRO GERASEEV, UNIVERSIDADE FEDERAL DE MINAS GERAIS; SARAH SILVA SANTOS, UNIVERSIDADE FEDERAL DE MINAS GERAIS; AMÁLIA SATURNINO CHAVES, UNIVERSIDADE FEDERAL DE JUIZ DE FORA; FERNANDA SAMARINI MACHADO, CNPGL.
dc.contributor.author.fl_str_mv GERASEEV, L. C.
SANTOS, S. S.
CHAVES, A. S.
MACHADO, F. S.
dc.subject.por.fl_str_mv Bioenergetic
Indirect calorimetry
Ovino
Cordeiro
Energy requirements
topic Bioenergetic
Indirect calorimetry
Ovino
Cordeiro
Energy requirements
description The objective of this study was to assess the oxygen pulse and heart rate method (O2 P-HR) using a respiration chamber at different measurement times for estimate the heat production (HP) of lambs fed increasing levels of sunflower meal in their diet. Twenty-four lambs were assigned to four experimental diets (0, 100, 200, and 300 g of sunflower meal kg-1 DM). Heat production was estimated using the O2 P-HR (HPO2P) method and a respirometry chamber (HPRC). Measurements were obtained by simultaneously measuring heart rate (HR) and oxygen consumption over 3, 6, 9, 12, 15, 18, 21 and 24 h. A flow-through respirometry chamber for small ruminants was used to determine oxygen consumption (VO2 ) and carbon dioxide and methane production. Data on dietary treatment, measurement times and their interactions were analyzed as repeated measures using mixed model procedures and Restricted Maximum Likelihood (REML) estimation. The Pearson’s correlation coefficient was used to compare techniques. There was no effect of the different levels of sunflower meal inclusion on VO2 and heat production. The HPO2P (126.16 kcal/ BW0.75/day) was 2% higher than that of the HPRC (124.61 kcal/ BW0.75/day), and the correlation coefficients was 0.628. The coefficient of variation was greater for the HPO2P (21.33%) than for HPRC (11.44%). HR (beats/min), VO2 (mL/min/BW0.75) and O2 P-HR (mL/beat) required measurement times of 24, 15 and 9 hours, respectively. A measurement time of 24 h was necessary to ensure a more accurate estimate of the heat production using the O2 P-HR method.
publishDate 2024
dc.date.none.fl_str_mv 2024-01-18T14:32:24Z
2024-01-18T14:32:24Z
2024-01-18
2024
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 Ciência Rural, v. 54, n. 8, e20230045, 2024.
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1160993
http://doi.org/10.1590/0103-8478cr20230045
identifier_str_mv Ciência Rural, v. 54, n. 8, e20230045, 2024.
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/1160993
http://doi.org/10.1590/0103-8478cr20230045
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
collection Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
repository.name.fl_str_mv Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv cg-riaa@embrapa.br
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