Lactational responses of heat-stressed dairy goats to dietary L-carnitine supplementation
Heat stress causes significant losses in milk production, and nutritional strategies are needed to alleviate its effects. Endogenous carnitine synthesis is also reduced by heat stress (HS). Carnitine plays a central role in fatty acid oxidation and buffers the toxic effects of acyl groups. We hypoth...
| Autores: | , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:216629 |
| Acceso en línea: | https://ddd.uab.cat/record/216629 https://dx.doi.org/urn:doi:10.3390/ani9080567 |
| Access Level: | acceso abierto |
| Palabra clave: | L-carnitine Heat stress Feed sorting Metabolism Dairy goats |
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Lactational responses of heat-stressed dairy goats to dietary L-carnitine supplementationMehaba, Nabil|||0000-0002-1701-5407Salama, Ahmed A. K.|||0000-0003-2065-9702Such i Martí, Francesc Xavier|||0000-0002-9712-4477Albanell Trullas, Elena|||0000-0002-6158-7736Caja López, Gerardo|||0000-0001-8606-3587L-carnitineHeat stressFeed sortingMetabolismDairy goatsHeat stress causes significant losses in milk production, and nutritional strategies are needed to alleviate its effects. Endogenous carnitine synthesis is also reduced by heat stress (HS). Carnitine plays a central role in fatty acid oxidation and buffers the toxic effects of acyl groups. We hypothesized that carnitine supplementation would make up for any carnitine deficiencies during HS and improve lipid metabolism. The objective was to evaluate rumen-protected L-carnitine (CAR) supplementation in dairy goats under thermo-neutral (TN) or HS conditions. Four Murciano-Granadina dairy goats were used in a four × four Latin square design. Goats were allocated to one of four treatments in a two × two factorial arrangement. Factors were 1) diet: control (CON) or supplementation with CAR (1 g/d); and 2) ambient conditions: TN (15 to 20 °C) or HS (0900 to 2100 h at 35 °C, 2100 to 0900 h at 28 °C). Blood free-, acetyl-, and total-carnitine concentrations increased almost three times by supplementation. Despite this efficient absorption, CAR had no effect on feed intake, milk production or blood metabolites in TN or HS conditions. Heat stress increased rectal temperature and respiratory rate. Additionally, HS goats experienced 26% loss in feed intake, but they tended to eat longer particle sizes. Compared to TN, heat-stressed goats lost more subcutaneous fat (difference in fat thickness measured before and after each period = -0.72 vs. +0.64 mm). In conclusion, supplemented L-carnitine was efficiently absorbed, but it had no lactational effects on performance of goats under thermo-neutral or heat stress conditions. 22019-01-0120192019-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/216629https://dx.doi.org/urn:doi:10.3390/ani9080567reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengMinisterio de Economía y Competitividad https://doi.org/10.13039/501100003329 AGL2013-44061-Ropen accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2166292026-06-06T12:50:31Z |
| dc.title.none.fl_str_mv |
Lactational responses of heat-stressed dairy goats to dietary L-carnitine supplementation |
| title |
Lactational responses of heat-stressed dairy goats to dietary L-carnitine supplementation |
| spellingShingle |
Lactational responses of heat-stressed dairy goats to dietary L-carnitine supplementation Mehaba, Nabil|||0000-0002-1701-5407 L-carnitine Heat stress Feed sorting Metabolism Dairy goats |
| title_short |
Lactational responses of heat-stressed dairy goats to dietary L-carnitine supplementation |
| title_full |
Lactational responses of heat-stressed dairy goats to dietary L-carnitine supplementation |
| title_fullStr |
Lactational responses of heat-stressed dairy goats to dietary L-carnitine supplementation |
| title_full_unstemmed |
Lactational responses of heat-stressed dairy goats to dietary L-carnitine supplementation |
| title_sort |
Lactational responses of heat-stressed dairy goats to dietary L-carnitine supplementation |
| dc.creator.none.fl_str_mv |
Mehaba, Nabil|||0000-0002-1701-5407 Salama, Ahmed A. K.|||0000-0003-2065-9702 Such i Martí, Francesc Xavier|||0000-0002-9712-4477 Albanell Trullas, Elena|||0000-0002-6158-7736 Caja López, Gerardo|||0000-0001-8606-3587 |
| author |
Mehaba, Nabil|||0000-0002-1701-5407 |
| author_facet |
Mehaba, Nabil|||0000-0002-1701-5407 Salama, Ahmed A. K.|||0000-0003-2065-9702 Such i Martí, Francesc Xavier|||0000-0002-9712-4477 Albanell Trullas, Elena|||0000-0002-6158-7736 Caja López, Gerardo|||0000-0001-8606-3587 |
| author_role |
author |
| author2 |
Salama, Ahmed A. K.|||0000-0003-2065-9702 Such i Martí, Francesc Xavier|||0000-0002-9712-4477 Albanell Trullas, Elena|||0000-0002-6158-7736 Caja López, Gerardo|||0000-0001-8606-3587 |
| author2_role |
author author author author |
| dc.subject.none.fl_str_mv |
L-carnitine Heat stress Feed sorting Metabolism Dairy goats |
| topic |
L-carnitine Heat stress Feed sorting Metabolism Dairy goats |
| description |
Heat stress causes significant losses in milk production, and nutritional strategies are needed to alleviate its effects. Endogenous carnitine synthesis is also reduced by heat stress (HS). Carnitine plays a central role in fatty acid oxidation and buffers the toxic effects of acyl groups. We hypothesized that carnitine supplementation would make up for any carnitine deficiencies during HS and improve lipid metabolism. The objective was to evaluate rumen-protected L-carnitine (CAR) supplementation in dairy goats under thermo-neutral (TN) or HS conditions. Four Murciano-Granadina dairy goats were used in a four × four Latin square design. Goats were allocated to one of four treatments in a two × two factorial arrangement. Factors were 1) diet: control (CON) or supplementation with CAR (1 g/d); and 2) ambient conditions: TN (15 to 20 °C) or HS (0900 to 2100 h at 35 °C, 2100 to 0900 h at 28 °C). Blood free-, acetyl-, and total-carnitine concentrations increased almost three times by supplementation. Despite this efficient absorption, CAR had no effect on feed intake, milk production or blood metabolites in TN or HS conditions. Heat stress increased rectal temperature and respiratory rate. Additionally, HS goats experienced 26% loss in feed intake, but they tended to eat longer particle sizes. Compared to TN, heat-stressed goats lost more subcutaneous fat (difference in fat thickness measured before and after each period = -0.72 vs. +0.64 mm). In conclusion, supplemented L-carnitine was efficiently absorbed, but it had no lactational effects on performance of goats under thermo-neutral or heat stress conditions. |
| publishDate |
2019 |
| dc.date.none.fl_str_mv |
2 2019-01-01 2019 2019-01-01 |
| dc.type.none.fl_str_mv |
Article http://purl.org/coar/resource_type/c_6501 VoR http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
https://ddd.uab.cat/record/216629 https://dx.doi.org/urn:doi:10.3390/ani9080567 |
| url |
https://ddd.uab.cat/record/216629 https://dx.doi.org/urn:doi:10.3390/ani9080567 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.relation.none.fl_str_mv |
Ministerio de Economía y Competitividad https://doi.org/10.13039/501100003329 AGL2013-44061-R |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 https://creativecommons.org/licenses/by/4.0/ |
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info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 https://creativecommons.org/licenses/by/4.0/ |
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openAccess |
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application/pdf |
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reponame:Dipòsit Digital de Documents de la UAB instname:Universitat Autònoma de Barcelona |
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Universitat Autònoma de Barcelona |
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Dipòsit Digital de Documents de la UAB |
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