CLA induced milk fat depression reduced dry matter intake and improved energy balance in dairy goats.

Detalhes bibliográficos
Autor(a) principal: BALDIN, M.
Data de Publicação: 2014
Outros Autores: DRESCH, R., SOUZA, F., FERNANDES, D., GAMA, M. A. S. da, HARVATINE, K. J., OLIVEIRA, D. E.
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/976400
https://doi.org/10.1016/j.smallrumres.2013.10.001
Resumo: The extent to which CLA supplements inhibit milk fat synthesis is highly dependent on the amount of trans-10, cis-12 CLA reaching the mammary gland. Secondary events such as changes in milk yield, dry matter intake (DMI), body weight (BW) and energy balance (EB) may also occur depending on the magnitude of milk fat depression. This study investigated the effects of feeding a rumen unprotected CLA methyl ester supplement on milk fat yield and fatty acid (FA) profile, yield of milk and other milk components, DMI and metabolic variables in dairy goats. Twenty primiparous, non-pregnant Toggenburg goats, paired by BW, days in milk (DIM) and milk yield (MY) [2.8 ± 0.4 (mean ± SEM) kg milk/day, BW of 40 ± 3.7 kg and 75 ± 3 days in milk] were used in a crossover design with 14 days treatment periods and a 6 days washout. Goats were randomly assigned to the following treatments: Control (30 g/day of calcium salts of FA) or CLA [30 g/day of a rumen unprotected CLA methyl ester supplement (29.9% trans-10, cis-12 CLA)]. There was no treatment effect on BW, milk yield, or milk protein and lactose content and yield. However, compared to Control, CLA decreased milk fat content and yield by 13.9 and 13.3%, respectively, and CLA treated goats consumed 6.5% less corn silage. The CLA treatment increased the concentration of both CLA isomers (cis-9, trans-11 and trans-10, cis-12) in milk fat. The concentration of short and medium chain milk FA (C16) was decreased by CLA, while long chain FA were increased. However, the daily secretion was lower for FA of all chain lengths in CLA treated goats. Glucose and insulin were not affected by treatment, while CLA treatment decreased non esterified FA by 22.2%. The CLA treatment improved calculated EB by 0.3 Mcal/day. Overall, CLA methyl ester supplements are effective in causing milk fat depression in lactating dairy goats and improving EB, which may be used as a nutritional tool in some circumstances.
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spelling CLA induced milk fat depression reduced dry matter intake and improved energy balance in dairy goats.Ácido linoleico conjugadoCabras toggenburgÉster metílicoRúmen biohidrogenaçãoThe extent to which CLA supplements inhibit milk fat synthesis is highly dependent on the amount of trans-10, cis-12 CLA reaching the mammary gland. Secondary events such as changes in milk yield, dry matter intake (DMI), body weight (BW) and energy balance (EB) may also occur depending on the magnitude of milk fat depression. This study investigated the effects of feeding a rumen unprotected CLA methyl ester supplement on milk fat yield and fatty acid (FA) profile, yield of milk and other milk components, DMI and metabolic variables in dairy goats. Twenty primiparous, non-pregnant Toggenburg goats, paired by BW, days in milk (DIM) and milk yield (MY) [2.8 ± 0.4 (mean ± SEM) kg milk/day, BW of 40 ± 3.7 kg and 75 ± 3 days in milk] were used in a crossover design with 14 days treatment periods and a 6 days washout. Goats were randomly assigned to the following treatments: Control (30 g/day of calcium salts of FA) or CLA [30 g/day of a rumen unprotected CLA methyl ester supplement (29.9% trans-10, cis-12 CLA)]. There was no treatment effect on BW, milk yield, or milk protein and lactose content and yield. However, compared to Control, CLA decreased milk fat content and yield by 13.9 and 13.3%, respectively, and CLA treated goats consumed 6.5% less corn silage. The CLA treatment increased the concentration of both CLA isomers (cis-9, trans-11 and trans-10, cis-12) in milk fat. The concentration of short and medium chain milk FA (C16) was decreased by CLA, while long chain FA were increased. However, the daily secretion was lower for FA of all chain lengths in CLA treated goats. Glucose and insulin were not affected by treatment, while CLA treatment decreased non esterified FA by 22.2%. The CLA treatment improved calculated EB by 0.3 Mcal/day. Overall, CLA methyl ester supplements are effective in causing milk fat depression in lactating dairy goats and improving EB, which may be used as a nutritional tool in some circumstances.UESC; UESC; ESALQ; UESC; MARCO ANTONIO SUNDFELD DA GAMA, CNPGL; PENN STATE UNIVERSITY; UESC.BALDIN, M.DRESCH, R.SOUZA, F.FERNANDES, D.GAMA, M. A. S. daHARVATINE, K. J.OLIVEIRA, D. E.2014-07-26T06:55:39Z2014-07-26T06:55:39Z2014-01-1620142014-07-26T06:55:39Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleSmall Ruminant Research, v. 116, n. 1, p. 44-50, 2014.http://www.alice.cnptia.embrapa.br/alice/handle/doc/976400https://doi.org/10.1016/j.smallrumres.2013.10.001enginfo: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:EMBRAPA2017-08-16T01:59:54Zoai:www.alice.cnptia.embrapa.br:doc/976400Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542017-08-16T01:59:54falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-08-16T01:59:54Repositório 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 CLA induced milk fat depression reduced dry matter intake and improved energy balance in dairy goats.
title CLA induced milk fat depression reduced dry matter intake and improved energy balance in dairy goats.
spellingShingle CLA induced milk fat depression reduced dry matter intake and improved energy balance in dairy goats.
BALDIN, M.
Ácido linoleico conjugado
Cabras toggenburg
Éster metílico
Rúmen biohidrogenação
title_short CLA induced milk fat depression reduced dry matter intake and improved energy balance in dairy goats.
title_full CLA induced milk fat depression reduced dry matter intake and improved energy balance in dairy goats.
title_fullStr CLA induced milk fat depression reduced dry matter intake and improved energy balance in dairy goats.
title_full_unstemmed CLA induced milk fat depression reduced dry matter intake and improved energy balance in dairy goats.
title_sort CLA induced milk fat depression reduced dry matter intake and improved energy balance in dairy goats.
author BALDIN, M.
author_facet BALDIN, M.
DRESCH, R.
SOUZA, F.
FERNANDES, D.
GAMA, M. A. S. da
HARVATINE, K. J.
OLIVEIRA, D. E.
author_role author
author2 DRESCH, R.
SOUZA, F.
FERNANDES, D.
GAMA, M. A. S. da
HARVATINE, K. J.
OLIVEIRA, D. E.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv UESC; UESC; ESALQ; UESC; MARCO ANTONIO SUNDFELD DA GAMA, CNPGL; PENN STATE UNIVERSITY; UESC.
dc.contributor.author.fl_str_mv BALDIN, M.
DRESCH, R.
SOUZA, F.
FERNANDES, D.
GAMA, M. A. S. da
HARVATINE, K. J.
OLIVEIRA, D. E.
dc.subject.por.fl_str_mv Ácido linoleico conjugado
Cabras toggenburg
Éster metílico
Rúmen biohidrogenação
topic Ácido linoleico conjugado
Cabras toggenburg
Éster metílico
Rúmen biohidrogenação
description The extent to which CLA supplements inhibit milk fat synthesis is highly dependent on the amount of trans-10, cis-12 CLA reaching the mammary gland. Secondary events such as changes in milk yield, dry matter intake (DMI), body weight (BW) and energy balance (EB) may also occur depending on the magnitude of milk fat depression. This study investigated the effects of feeding a rumen unprotected CLA methyl ester supplement on milk fat yield and fatty acid (FA) profile, yield of milk and other milk components, DMI and metabolic variables in dairy goats. Twenty primiparous, non-pregnant Toggenburg goats, paired by BW, days in milk (DIM) and milk yield (MY) [2.8 ± 0.4 (mean ± SEM) kg milk/day, BW of 40 ± 3.7 kg and 75 ± 3 days in milk] were used in a crossover design with 14 days treatment periods and a 6 days washout. Goats were randomly assigned to the following treatments: Control (30 g/day of calcium salts of FA) or CLA [30 g/day of a rumen unprotected CLA methyl ester supplement (29.9% trans-10, cis-12 CLA)]. There was no treatment effect on BW, milk yield, or milk protein and lactose content and yield. However, compared to Control, CLA decreased milk fat content and yield by 13.9 and 13.3%, respectively, and CLA treated goats consumed 6.5% less corn silage. The CLA treatment increased the concentration of both CLA isomers (cis-9, trans-11 and trans-10, cis-12) in milk fat. The concentration of short and medium chain milk FA (C16) was decreased by CLA, while long chain FA were increased. However, the daily secretion was lower for FA of all chain lengths in CLA treated goats. Glucose and insulin were not affected by treatment, while CLA treatment decreased non esterified FA by 22.2%. The CLA treatment improved calculated EB by 0.3 Mcal/day. Overall, CLA methyl ester supplements are effective in causing milk fat depression in lactating dairy goats and improving EB, which may be used as a nutritional tool in some circumstances.
publishDate 2014
dc.date.none.fl_str_mv 2014-07-26T06:55:39Z
2014-07-26T06:55:39Z
2014-01-16
2014
2014-07-26T06:55:39Z
dc.type.driver.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv Small Ruminant Research, v. 116, n. 1, p. 44-50, 2014.
http://www.alice.cnptia.embrapa.br/alice/handle/doc/976400
https://doi.org/10.1016/j.smallrumres.2013.10.001
identifier_str_mv Small Ruminant Research, v. 116, n. 1, p. 44-50, 2014.
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/976400
https://doi.org/10.1016/j.smallrumres.2013.10.001
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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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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