A blend of essential oils improved feed efficiency and affected ruminal and systemic variables of dairy cows

Detalhes bibliográficos
Autor(a) principal: Silva, Rayana Brito da
Data de Publicação: 2019
Outros Autores: Pereira, Marcos Neves, Araujo, Rafael Canonenco de, Silva, Wesley de Rezende, Pereira, Renata Apocalypse Nogueira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFLA
Texto Completo: http://repositorio.ufla.br/jspui/handle/1/48712
Resumo: This experiment evaluated the effect of a blend of essential oils (BEO) on intake, lactation performance, diet digestibility, ruminal fermentation profile, eating behavior, body thermoregulation, blood acid–base balance, and milk fatty acid profile of lactating cows. Twenty-eight Holstein cows were individually fed a standard diet for 14 d and treatments control or BEO (a microencapsulated blend of pepper extract containing capsaicin and pure forms of carvacrol, cinnamaldehyde, and eugenol; 150 mg/kg of diet dry matter) for 56 d. Significance was declared at P ≤ 0.05 and trends at 0.05 < P ≤ 0.10. Dry matter intake (DMI) was reduced (19.5 vs. 20.1 kg/d) and milk yield was increased (30.1 vs. 30.8 kg/d) by BEO, inducing improved milk to DMI ratio (1.53 vs. 1.62). Milk fat concentration tended to be increased by BEO, but total solids yield did not differ. There was a trend for increased total tract non-neutral detergent fiber organic matter digestibility with BEO. The molar proportion of acetate in ruminal fluid was reduced (51.4 vs. 57.8%) and that of propionate was increased (26.1 vs. 31.3%) by BEO. Ruminal microbial yield and total protozoa count in ruminal fluid did not differ. Cows fed BEO ingested a greater proportion of the daily intake in the morning (30.6 vs. 36.6%) and tended to ingest a lower proportion at night, tended to have longer meals, and had fewer meals per day (11.9 vs. 13.7) and larger meal size (1.5 vs. 1.7 kg of dry matter per meal). Blood urea-N and glucose concentrations did not differ. The BEO increased jugular blood oxygenation. The sweating rate on a hot and dry day was increased (160 vs. 221 g/m2/h) by BEO. The mean rectal and skin temperatures and respiration rate did not differ, but the proportion of rectal temperature measurements ≥39.2 °C was reduced by BEO at 1400 h (17.8 vs. 28.5%) and 2000 h (23.2 vs. 34.8%). The BEO increased the secretion (g/d) of 18:2 trans-10, cis-12 and the concentration of 18:0 iso fatty acids in milk fat. When one sample of milk from BEO cows was offered with two samples of milk from control, 59% of regular consumers of milk (n = 63) identified the odd sample correctly. The gain in feed efficiency induced by BEO was associated with reduced acetate-to-propionate ratio in ruminal fluid, altered eating behavior, lower frequency of high rectal temperature, and increased blood oxygenation. Essential oils had positive effects on ruminal fermentation and systemic variables of dairy cows.
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spelling A blend of essential oils improved feed efficiency and affected ruminal and systemic variables of dairy cowsDigestibilityEating behaviorEssential oilsFeed efficiencyRuminal fermentationThermoregulationÓleos essenciaisVacas leiteiras - DigestibilidadeComportamento alimentarEficiência alimentarFermentação ruminalTermorregulaçãoThis experiment evaluated the effect of a blend of essential oils (BEO) on intake, lactation performance, diet digestibility, ruminal fermentation profile, eating behavior, body thermoregulation, blood acid–base balance, and milk fatty acid profile of lactating cows. Twenty-eight Holstein cows were individually fed a standard diet for 14 d and treatments control or BEO (a microencapsulated blend of pepper extract containing capsaicin and pure forms of carvacrol, cinnamaldehyde, and eugenol; 150 mg/kg of diet dry matter) for 56 d. Significance was declared at P ≤ 0.05 and trends at 0.05 < P ≤ 0.10. Dry matter intake (DMI) was reduced (19.5 vs. 20.1 kg/d) and milk yield was increased (30.1 vs. 30.8 kg/d) by BEO, inducing improved milk to DMI ratio (1.53 vs. 1.62). Milk fat concentration tended to be increased by BEO, but total solids yield did not differ. There was a trend for increased total tract non-neutral detergent fiber organic matter digestibility with BEO. The molar proportion of acetate in ruminal fluid was reduced (51.4 vs. 57.8%) and that of propionate was increased (26.1 vs. 31.3%) by BEO. Ruminal microbial yield and total protozoa count in ruminal fluid did not differ. Cows fed BEO ingested a greater proportion of the daily intake in the morning (30.6 vs. 36.6%) and tended to ingest a lower proportion at night, tended to have longer meals, and had fewer meals per day (11.9 vs. 13.7) and larger meal size (1.5 vs. 1.7 kg of dry matter per meal). Blood urea-N and glucose concentrations did not differ. The BEO increased jugular blood oxygenation. The sweating rate on a hot and dry day was increased (160 vs. 221 g/m2/h) by BEO. The mean rectal and skin temperatures and respiration rate did not differ, but the proportion of rectal temperature measurements ≥39.2 °C was reduced by BEO at 1400 h (17.8 vs. 28.5%) and 2000 h (23.2 vs. 34.8%). The BEO increased the secretion (g/d) of 18:2 trans-10, cis-12 and the concentration of 18:0 iso fatty acids in milk fat. When one sample of milk from BEO cows was offered with two samples of milk from control, 59% of regular consumers of milk (n = 63) identified the odd sample correctly. The gain in feed efficiency induced by BEO was associated with reduced acetate-to-propionate ratio in ruminal fluid, altered eating behavior, lower frequency of high rectal temperature, and increased blood oxygenation. Essential oils had positive effects on ruminal fermentation and systemic variables of dairy cows.American Society of Animal Science2021-12-20T21:47:18Z2021-12-20T21:47:18Z2019-12info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfSILVA, R. B. da et al. A blend of essential oils improved feed efficiency and affected ruminal and systemic variables of dairy cows. Translational Animal Science, [S. I.], v. 4, n. 1, p. 182-193, Jan. 2020. DOI: https://doi.org/10.1093/tas/txz183.http://repositorio.ufla.br/jspui/handle/1/48712Translational Animal Sciencereponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAhttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccessSilva, Rayana Brito daPereira, Marcos NevesAraujo, Rafael Canonenco deSilva, Wesley de RezendePereira, Renata Apocalypse Nogueiraeng2021-12-20T21:47:50Zoai:localhost:1/48712Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2021-12-20T21:47:50Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false
dc.title.none.fl_str_mv A blend of essential oils improved feed efficiency and affected ruminal and systemic variables of dairy cows
title A blend of essential oils improved feed efficiency and affected ruminal and systemic variables of dairy cows
spellingShingle A blend of essential oils improved feed efficiency and affected ruminal and systemic variables of dairy cows
Silva, Rayana Brito da
Digestibility
Eating behavior
Essential oils
Feed efficiency
Ruminal fermentation
Thermoregulation
Óleos essenciais
Vacas leiteiras - Digestibilidade
Comportamento alimentar
Eficiência alimentar
Fermentação ruminal
Termorregulação
title_short A blend of essential oils improved feed efficiency and affected ruminal and systemic variables of dairy cows
title_full A blend of essential oils improved feed efficiency and affected ruminal and systemic variables of dairy cows
title_fullStr A blend of essential oils improved feed efficiency and affected ruminal and systemic variables of dairy cows
title_full_unstemmed A blend of essential oils improved feed efficiency and affected ruminal and systemic variables of dairy cows
title_sort A blend of essential oils improved feed efficiency and affected ruminal and systemic variables of dairy cows
author Silva, Rayana Brito da
author_facet Silva, Rayana Brito da
Pereira, Marcos Neves
Araujo, Rafael Canonenco de
Silva, Wesley de Rezende
Pereira, Renata Apocalypse Nogueira
author_role author
author2 Pereira, Marcos Neves
Araujo, Rafael Canonenco de
Silva, Wesley de Rezende
Pereira, Renata Apocalypse Nogueira
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Silva, Rayana Brito da
Pereira, Marcos Neves
Araujo, Rafael Canonenco de
Silva, Wesley de Rezende
Pereira, Renata Apocalypse Nogueira
dc.subject.por.fl_str_mv Digestibility
Eating behavior
Essential oils
Feed efficiency
Ruminal fermentation
Thermoregulation
Óleos essenciais
Vacas leiteiras - Digestibilidade
Comportamento alimentar
Eficiência alimentar
Fermentação ruminal
Termorregulação
topic Digestibility
Eating behavior
Essential oils
Feed efficiency
Ruminal fermentation
Thermoregulation
Óleos essenciais
Vacas leiteiras - Digestibilidade
Comportamento alimentar
Eficiência alimentar
Fermentação ruminal
Termorregulação
description This experiment evaluated the effect of a blend of essential oils (BEO) on intake, lactation performance, diet digestibility, ruminal fermentation profile, eating behavior, body thermoregulation, blood acid–base balance, and milk fatty acid profile of lactating cows. Twenty-eight Holstein cows were individually fed a standard diet for 14 d and treatments control or BEO (a microencapsulated blend of pepper extract containing capsaicin and pure forms of carvacrol, cinnamaldehyde, and eugenol; 150 mg/kg of diet dry matter) for 56 d. Significance was declared at P ≤ 0.05 and trends at 0.05 < P ≤ 0.10. Dry matter intake (DMI) was reduced (19.5 vs. 20.1 kg/d) and milk yield was increased (30.1 vs. 30.8 kg/d) by BEO, inducing improved milk to DMI ratio (1.53 vs. 1.62). Milk fat concentration tended to be increased by BEO, but total solids yield did not differ. There was a trend for increased total tract non-neutral detergent fiber organic matter digestibility with BEO. The molar proportion of acetate in ruminal fluid was reduced (51.4 vs. 57.8%) and that of propionate was increased (26.1 vs. 31.3%) by BEO. Ruminal microbial yield and total protozoa count in ruminal fluid did not differ. Cows fed BEO ingested a greater proportion of the daily intake in the morning (30.6 vs. 36.6%) and tended to ingest a lower proportion at night, tended to have longer meals, and had fewer meals per day (11.9 vs. 13.7) and larger meal size (1.5 vs. 1.7 kg of dry matter per meal). Blood urea-N and glucose concentrations did not differ. The BEO increased jugular blood oxygenation. The sweating rate on a hot and dry day was increased (160 vs. 221 g/m2/h) by BEO. The mean rectal and skin temperatures and respiration rate did not differ, but the proportion of rectal temperature measurements ≥39.2 °C was reduced by BEO at 1400 h (17.8 vs. 28.5%) and 2000 h (23.2 vs. 34.8%). The BEO increased the secretion (g/d) of 18:2 trans-10, cis-12 and the concentration of 18:0 iso fatty acids in milk fat. When one sample of milk from BEO cows was offered with two samples of milk from control, 59% of regular consumers of milk (n = 63) identified the odd sample correctly. The gain in feed efficiency induced by BEO was associated with reduced acetate-to-propionate ratio in ruminal fluid, altered eating behavior, lower frequency of high rectal temperature, and increased blood oxygenation. Essential oils had positive effects on ruminal fermentation and systemic variables of dairy cows.
publishDate 2019
dc.date.none.fl_str_mv 2019-12
2021-12-20T21:47:18Z
2021-12-20T21:47:18Z
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 SILVA, R. B. da et al. A blend of essential oils improved feed efficiency and affected ruminal and systemic variables of dairy cows. Translational Animal Science, [S. I.], v. 4, n. 1, p. 182-193, Jan. 2020. DOI: https://doi.org/10.1093/tas/txz183.
http://repositorio.ufla.br/jspui/handle/1/48712
identifier_str_mv SILVA, R. B. da et al. A blend of essential oils improved feed efficiency and affected ruminal and systemic variables of dairy cows. Translational Animal Science, [S. I.], v. 4, n. 1, p. 182-193, Jan. 2020. DOI: https://doi.org/10.1093/tas/txz183.
url http://repositorio.ufla.br/jspui/handle/1/48712
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv http://creativecommons.org/licenses/by-nc/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv 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 American Society of Animal Science
publisher.none.fl_str_mv American Society of Animal Science
dc.source.none.fl_str_mv Translational Animal Science
reponame:Repositório Institucional da UFLA
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instname_str Universidade Federal de Lavras (UFLA)
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institution UFLA
reponame_str Repositório Institucional da UFLA
collection Repositório Institucional da UFLA
repository.name.fl_str_mv Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)
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