Milk fatty acid profile from cows fed with mixed rations and different access time to pasture land during early lactation
Milk fatty acid (FA) profiles were determined in Holstein cows (n = 27) fed total mixed rations (TMR) ad libitum (G0) or diet composed by TMR (50% dry matter [DM] offered) plus grazing of pasture with 6 hr of access time to paddock in one session (G1) or 9 hr in two sessions (G2) at 45 days in milk...
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| Định dạng: | article |
| Ngôn ngữ: | Tiếng Anh |
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2018
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| Truy cập trực tuyến: | https://catalogo.latu.org.uy/opac_css/index.php?lvl=notice_display&id=32104 |
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| _version_ | 1868889996290686976 |
|---|---|
| author | BARCA, JOAQUIN |
| author2 | CARRIQUIRY, MARIANA OLAZÁBAL, LAURA FAJARDO, MAITE CHILIBROSTE, PABLO MEIKLE, ANA |
| author2_role | author author author author author |
| author_browse | BARCA, JOAQUIN CARRIQUIRY, MARIANA CHILIBROSTE, PABLO FAJARDO, MAITE MEIKLE, ANA OLAZÁBAL, LAURA |
| author_facet | BARCA, JOAQUIN CARRIQUIRY, MARIANA OLAZÁBAL, LAURA FAJARDO, MAITE CHILIBROSTE, PABLO MEIKLE, ANA |
| author_role | author |
| collection | Catálogo digital del LATU |
| dc.coverage.none.fl_str_mv | En: Journal of Animal Physiology and Animal Nutrition, 2018, 102(3), pp.620-629. doi: 10.1111/jpn.12826 |
| dc.creator.none.fl_str_mv | BARCA, JOAQUIN CARRIQUIRY, MARIANA OLAZÁBAL, LAURA FAJARDO, MAITE CHILIBROSTE, PABLO MEIKLE, ANA |
| dc.date.none.fl_str_mv | 2018-01-01 |
| dc.format.none.fl_str_mv | Pdf |
| dc.identifier.none.fl_str_mv | https://catalogo.latu.org.uy/opac_css/index.php?lvl=notice_display&id=32104 32104 urn:ISBN:69221 |
| dc.language.none.fl_str_mv | eng |
| dc.rights.none.fl_str_mv | 10.1111/jpn.12826 info:eu-repo/semantics/openAccess CC BY-NC-ND CC BY-NC-ND |
| dc.source.none.fl_str_mv | reponame:Catálogo digital del LATU instname:Laboratorio Tecnológico del Uruguay instacron:Laboratorio Tecnológico del Uruguay |
| dc.subject.none.fl_str_mv | ÁCIDOS GRASOS GANADO VACUNO GRASAS LECHE |
| dc.title.none.fl_str_mv | Milk fatty acid profile from cows fed with mixed rations and different access time to pasture land during early lactation |
| dc.type.none.fl_str_mv | info:eu-repo/semantics/article Publicado info:eu-repo/semantics/publishedVersion |
| description | Milk fatty acid (FA) profiles were determined in Holstein cows (n = 27) fed total mixed rations (TMR) ad libitum (G0) or diet composed by TMR (50% dry matter [DM] offered) plus grazing of pasture with 6 hr of access time to paddock in one session (G1) or 9 hr in two sessions (G2) at 45 days in milk (DIM). Moreover, milk FA was determined at 65 DIM when G0 cows turned out to G1 diet without adaptation period (Post-G0),G1 remained as controls. Milk FA was quantified using gas chromatography and mass spectrometry. Preformed FA at 45 DIM was greater (+27%) for G2 than G0 cows (p < .05). Stearic acid (C18:0) was 30% greater for G2 cows (p < .05). De novo FA was lowest for G2 cows (p < .05). Conjugated linoleic acid (CLA) did not differ (p < .12), while vaccenic acid (C18:1trans) was twofold greater for grazing treatments (p < .01). Linolenic acid [C18:3(n-3)] was greatest for G2 and lowest for G0 cows (p < .01). Omega 6 FA was greater for G0 than grazing cows, mainly due to linoleic acid [18:2cis(n-6); p < .05]. These results determined that n-6/n-3 ratio was almost threefold greater for G0 than grazing cows (p < .001). When diet of G0 cows changed to include pasture (Post-G0), preformed FA increased (p < .05), explained mainly by the increase (p < .05) of stearic (C18:0) and C18:1trans, while de novo FA tended to decrease (p < .1). Moreover, the amount of CLA and C18:3(n-3) tended to increase (p < .1) in Post-G0 cows. Offering 50% of dietary DM from pasture modified milk FA profile in early lactation potentially beneficial for human health. When TMR-fed cows were turned out to 50% pasture, milk FA profile reflected dietary change without need of an adaptation period. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | anni_2d6fcfa77ffcb6446d985b0e0090c94f |
| identifier_str_mv | 32104 urn:ISBN:69221 |
| instacron_str | Laboratorio Tecnológico del Uruguay |
| institution | Laboratorio Tecnológico del Uruguay |
| instname_str | Laboratorio Tecnológico del Uruguay |
| language | eng |
| network_acronym_str | anni |
| network_name_str | oai-lr-anni |
| oai_identifier_str | oai:PMBOAI:32104 |
| publishDate | 2018 |
| publishDateSort | 2018 |
| reponame_str | Catálogo digital del LATU |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | 10.1111/jpn.12826 CC BY-NC-ND CC BY-NC-ND |
| spelling | Milk fatty acid profile from cows fed with mixed rations and different access time to pasture land during early lactationBARCA, JOAQUINCARRIQUIRY, MARIANAOLAZÁBAL, LAURAFAJARDO, MAITECHILIBROSTE, PABLOMEIKLE, ANAÁCIDOS GRASOSGANADO VACUNOGRASASLECHEMilk fatty acid (FA) profiles were determined in Holstein cows (n = 27) fed total mixed rations (TMR) ad libitum (G0) or diet composed by TMR (50% dry matter [DM] offered) plus grazing of pasture with 6 hr of access time to paddock in one session (G1) or 9 hr in two sessions (G2) at 45 days in milk (DIM). Moreover, milk FA was determined at 65 DIM when G0 cows turned out to G1 diet without adaptation period (Post-G0),G1 remained as controls. Milk FA was quantified using gas chromatography and mass spectrometry. Preformed FA at 45 DIM was greater (+27%) for G2 than G0 cows (p < .05). Stearic acid (C18:0) was 30% greater for G2 cows (p < .05). De novo FA was lowest for G2 cows (p < .05). Conjugated linoleic acid (CLA) did not differ (p < .12), while vaccenic acid (C18:1trans) was twofold greater for grazing treatments (p < .01). Linolenic acid [C18:3(n-3)] was greatest for G2 and lowest for G0 cows (p < .01). Omega 6 FA was greater for G0 than grazing cows, mainly due to linoleic acid [18:2cis(n-6); p < .05]. These results determined that n-6/n-3 ratio was almost threefold greater for G0 than grazing cows (p < .001). When diet of G0 cows changed to include pasture (Post-G0), preformed FA increased (p < .05), explained mainly by the increase (p < .05) of stearic (C18:0) and C18:1trans, while de novo FA tended to decrease (p < .1). Moreover, the amount of CLA and C18:3(n-3) tended to increase (p < .1) in Post-G0 cows. Offering 50% of dietary DM from pasture modified milk FA profile in early lactation potentially beneficial for human health. When TMR-fed cows were turned out to 50% pasture, milk FA profile reflected dietary change without need of an adaptation period.2018-01-01info:eu-repo/semantics/articlePublicadoinfo:eu-repo/semantics/publishedVersionPdfhttps://catalogo.latu.org.uy/opac_css/index.php?lvl=notice_display&id=3210432104urn:ISBN:69221reponame:Catálogo digital del LATUinstname:Laboratorio Tecnológico del Uruguayinstacron:Laboratorio Tecnológico del UruguayengEn: Journal of Animal Physiology and Animal Nutrition, 2018, 102(3), pp.620-629. doi: 10.1111/jpn.1282610.1111/jpn.12826info:eu-repo/semantics/openAccessCC BY-NC-NDCC BY-NC-NDoai:PMBOAI:321042026-06-16T06:18:25Z |
| spellingShingle | Milk fatty acid profile from cows fed with mixed rations and different access time to pasture land during early lactation BARCA, JOAQUIN ÁCIDOS GRASOS GANADO VACUNO GRASAS LECHE |
| status_str | publishedVersion |
| title | Milk fatty acid profile from cows fed with mixed rations and different access time to pasture land during early lactation |
| title_full | Milk fatty acid profile from cows fed with mixed rations and different access time to pasture land during early lactation |
| title_fullStr | Milk fatty acid profile from cows fed with mixed rations and different access time to pasture land during early lactation |
| title_full_unstemmed | Milk fatty acid profile from cows fed with mixed rations and different access time to pasture land during early lactation |
| title_short | Milk fatty acid profile from cows fed with mixed rations and different access time to pasture land during early lactation |
| title_sort | Milk fatty acid profile from cows fed with mixed rations and different access time to pasture land during early lactation |
| topic | ÁCIDOS GRASOS GANADO VACUNO GRASAS LECHE |
| url | https://catalogo.latu.org.uy/opac_css/index.php?lvl=notice_display&id=32104 |