Meta-analysis of the effect of glycerin inclusion in dairy cattle diet on milk fatty acid profile

Detalhes bibliográficos
Autor(a) principal: Torres, Rodrigo N. S. [UNESP]
Data de Publicação: 2021
Outros Autores: Bertoco, João P. A. [UNESP], De Arruda, Maria C. G. [UNESP], Rodrigues, Julia L. [UNESP], Coelho, Larissa M. [UNESP], Paschoaloto, Josimari R. [UNESP], De Almeida Júnior, Gercílio A., Ezequiel, Jane M. B. [UNESP], Almeida, Marco T. C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1093/tas/txab012
http://hdl.handle.net/11449/208623
Resumo: The use of glycerin in diets for dairy cows initially emerged as an alternative for the prevention and control of ketosis. However, despite some controversy, there are still several studies associating glycerin with increases in daily milk yield, with possible changes in its constituents. Therefore, the objective of this study was to evaluate, using a meta-analysis approach, the effect of glycerin inclusion in dairy cow diets on milk fatty acid. Twenty-two peer-reviewed publications with 66 treatment means were included in data set. The effect of glycerin inclusion in diet (treatment) were evaluated using random-effect models to examine the weighted mean differences (WMD) between a control diet (without glycerin in the diet) and the treatment diet. Heterogeneity was explored by meta-regression and subgroup analysis performed for: genetic type; days in milk; experimental period; glycerin in diet; glycerin type and concentrate in diet. Inclusion of glycerin in the diet increased the digestibility of dry matter and protein, as well as ruminal propionate. It did not affect dry matter intake (P = 0.351) and milk yield (P = 0.730). The effect of glycerin inclusion on the milk fat yield is dependent on the genetic group, in which Holstein (WMD = -0.04 kg/d; P = 0.010) and Holstein-crossbreed (WMD = -0.10 kg/d; P < 0.0001) cows produced less fat in milk compared to Jersey cows, when glycerin was included in the diets. Glycine inclusions of up to 100 g/kg in the diet of dairy cows did not negatively affect milk production and composition. However, inclusions above 150 g/kg of glycerin in the diet reduced the concentration of fat, and of unsaturated, monounsaturated, polyunsaturated fatty acids and conjugated linoleic acid (CLA C18: 2 cis-9 and trans-11) in milk. The results reported in our meta-analysis does not demonstrate the effectiveness of glycerin in improving the composition of milk and a group of fatty acids of importance for human health such as C18: 2 cis-9, trans-11 CLA.
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spelling Meta-analysis of the effect of glycerin inclusion in dairy cattle diet on milk fatty acid profilebiodieselfat milkfatty acidglycerolThe use of glycerin in diets for dairy cows initially emerged as an alternative for the prevention and control of ketosis. However, despite some controversy, there are still several studies associating glycerin with increases in daily milk yield, with possible changes in its constituents. Therefore, the objective of this study was to evaluate, using a meta-analysis approach, the effect of glycerin inclusion in dairy cow diets on milk fatty acid. Twenty-two peer-reviewed publications with 66 treatment means were included in data set. The effect of glycerin inclusion in diet (treatment) were evaluated using random-effect models to examine the weighted mean differences (WMD) between a control diet (without glycerin in the diet) and the treatment diet. Heterogeneity was explored by meta-regression and subgroup analysis performed for: genetic type; days in milk; experimental period; glycerin in diet; glycerin type and concentrate in diet. Inclusion of glycerin in the diet increased the digestibility of dry matter and protein, as well as ruminal propionate. It did not affect dry matter intake (P = 0.351) and milk yield (P = 0.730). The effect of glycerin inclusion on the milk fat yield is dependent on the genetic group, in which Holstein (WMD = -0.04 kg/d; P = 0.010) and Holstein-crossbreed (WMD = -0.10 kg/d; P < 0.0001) cows produced less fat in milk compared to Jersey cows, when glycerin was included in the diets. Glycine inclusions of up to 100 g/kg in the diet of dairy cows did not negatively affect milk production and composition. However, inclusions above 150 g/kg of glycerin in the diet reduced the concentration of fat, and of unsaturated, monounsaturated, polyunsaturated fatty acids and conjugated linoleic acid (CLA C18: 2 cis-9 and trans-11) in milk. The results reported in our meta-analysis does not demonstrate the effectiveness of glycerin in improving the composition of milk and a group of fatty acids of importance for human health such as C18: 2 cis-9, trans-11 CLA.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Animal Unit of Digestive and Metabolic Studies Department of Animal Science School of Agricultural and Veterinarian Sciences São Paulo State University (UNESP)Department of Animal Science Federal University of Espírito SantoAnimal Unit of Digestive and Metabolic Studies Department of Animal Science School of Agricultural and Veterinarian Sciences São Paulo State University (UNESP)Universidade Estadual Paulista (Unesp)Federal University of Espírito SantoTorres, Rodrigo N. S. [UNESP]Bertoco, João P. A. [UNESP]De Arruda, Maria C. G. [UNESP]Rodrigues, Julia L. [UNESP]Coelho, Larissa M. [UNESP]Paschoaloto, Josimari R. [UNESP]De Almeida Júnior, Gercílio A.Ezequiel, Jane M. B. [UNESP]Almeida, Marco T. C.2021-06-25T11:15:10Z2021-06-25T11:15:10Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1093/tas/txab012Translational Animal Science, v. 5, n. 1, 2021.2573-2102http://hdl.handle.net/11449/20862310.1093/tas/txab0122-s2.0-85104955633Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengTranslational Animal Scienceinfo:eu-repo/semantics/openAccess2024-06-07T18:45:08Zoai:repositorio.unesp.br:11449/208623Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-06T00:03:02.192754Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Meta-analysis of the effect of glycerin inclusion in dairy cattle diet on milk fatty acid profile
title Meta-analysis of the effect of glycerin inclusion in dairy cattle diet on milk fatty acid profile
spellingShingle Meta-analysis of the effect of glycerin inclusion in dairy cattle diet on milk fatty acid profile
Torres, Rodrigo N. S. [UNESP]
biodiesel
fat milk
fatty acid
glycerol
title_short Meta-analysis of the effect of glycerin inclusion in dairy cattle diet on milk fatty acid profile
title_full Meta-analysis of the effect of glycerin inclusion in dairy cattle diet on milk fatty acid profile
title_fullStr Meta-analysis of the effect of glycerin inclusion in dairy cattle diet on milk fatty acid profile
title_full_unstemmed Meta-analysis of the effect of glycerin inclusion in dairy cattle diet on milk fatty acid profile
title_sort Meta-analysis of the effect of glycerin inclusion in dairy cattle diet on milk fatty acid profile
author Torres, Rodrigo N. S. [UNESP]
author_facet Torres, Rodrigo N. S. [UNESP]
Bertoco, João P. A. [UNESP]
De Arruda, Maria C. G. [UNESP]
Rodrigues, Julia L. [UNESP]
Coelho, Larissa M. [UNESP]
Paschoaloto, Josimari R. [UNESP]
De Almeida Júnior, Gercílio A.
Ezequiel, Jane M. B. [UNESP]
Almeida, Marco T. C.
author_role author
author2 Bertoco, João P. A. [UNESP]
De Arruda, Maria C. G. [UNESP]
Rodrigues, Julia L. [UNESP]
Coelho, Larissa M. [UNESP]
Paschoaloto, Josimari R. [UNESP]
De Almeida Júnior, Gercílio A.
Ezequiel, Jane M. B. [UNESP]
Almeida, Marco T. C.
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Federal University of Espírito Santo
dc.contributor.author.fl_str_mv Torres, Rodrigo N. S. [UNESP]
Bertoco, João P. A. [UNESP]
De Arruda, Maria C. G. [UNESP]
Rodrigues, Julia L. [UNESP]
Coelho, Larissa M. [UNESP]
Paschoaloto, Josimari R. [UNESP]
De Almeida Júnior, Gercílio A.
Ezequiel, Jane M. B. [UNESP]
Almeida, Marco T. C.
dc.subject.por.fl_str_mv biodiesel
fat milk
fatty acid
glycerol
topic biodiesel
fat milk
fatty acid
glycerol
description The use of glycerin in diets for dairy cows initially emerged as an alternative for the prevention and control of ketosis. However, despite some controversy, there are still several studies associating glycerin with increases in daily milk yield, with possible changes in its constituents. Therefore, the objective of this study was to evaluate, using a meta-analysis approach, the effect of glycerin inclusion in dairy cow diets on milk fatty acid. Twenty-two peer-reviewed publications with 66 treatment means were included in data set. The effect of glycerin inclusion in diet (treatment) were evaluated using random-effect models to examine the weighted mean differences (WMD) between a control diet (without glycerin in the diet) and the treatment diet. Heterogeneity was explored by meta-regression and subgroup analysis performed for: genetic type; days in milk; experimental period; glycerin in diet; glycerin type and concentrate in diet. Inclusion of glycerin in the diet increased the digestibility of dry matter and protein, as well as ruminal propionate. It did not affect dry matter intake (P = 0.351) and milk yield (P = 0.730). The effect of glycerin inclusion on the milk fat yield is dependent on the genetic group, in which Holstein (WMD = -0.04 kg/d; P = 0.010) and Holstein-crossbreed (WMD = -0.10 kg/d; P < 0.0001) cows produced less fat in milk compared to Jersey cows, when glycerin was included in the diets. Glycine inclusions of up to 100 g/kg in the diet of dairy cows did not negatively affect milk production and composition. However, inclusions above 150 g/kg of glycerin in the diet reduced the concentration of fat, and of unsaturated, monounsaturated, polyunsaturated fatty acids and conjugated linoleic acid (CLA C18: 2 cis-9 and trans-11) in milk. The results reported in our meta-analysis does not demonstrate the effectiveness of glycerin in improving the composition of milk and a group of fatty acids of importance for human health such as C18: 2 cis-9, trans-11 CLA.
publishDate 2021
dc.date.none.fl_str_mv 2021-06-25T11:15:10Z
2021-06-25T11:15:10Z
2021-01-01
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/10.1093/tas/txab012
Translational Animal Science, v. 5, n. 1, 2021.
2573-2102
http://hdl.handle.net/11449/208623
10.1093/tas/txab012
2-s2.0-85104955633
url http://dx.doi.org/10.1093/tas/txab012
http://hdl.handle.net/11449/208623
identifier_str_mv Translational Animal Science, v. 5, n. 1, 2021.
2573-2102
10.1093/tas/txab012
2-s2.0-85104955633
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Translational Animal Science
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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