Heat Stress in Dairy Cattle Alters Lipid Composition of Milk

Abstract Heat stress, potentially affecting both the health of animals and the yield and composition of milk, occurs frequently in tropical, sub-tropical and temperate regions. A simulated acute heat stress experiment was conducted in controlled-climate chambers and milk samples collected before, du...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Z. Liu, V. Ezernieks, J. Wang, N. Wanni Arachchillage, J. B. Garner, W. J. Wales, B. G. Cocks, S. Rochfort
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c5ec939b5f5d4c3195953e8162f31bf2
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:c5ec939b5f5d4c3195953e8162f31bf2
record_format	dspace
spelling	oai:doaj.org-article:c5ec939b5f5d4c3195953e8162f31bf22021-12-02T15:05:18ZHeat Stress in Dairy Cattle Alters Lipid Composition of Milk10.1038/s41598-017-01120-92045-2322https://doaj.org/article/c5ec939b5f5d4c3195953e8162f31bf22017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01120-9https://doaj.org/toc/2045-2322Abstract Heat stress, potentially affecting both the health of animals and the yield and composition of milk, occurs frequently in tropical, sub-tropical and temperate regions. A simulated acute heat stress experiment was conducted in controlled-climate chambers and milk samples collected before, during and after the heat challenge. Milk lipid composition, surveyed using LC-MS, showed significant changes in triacylglycerol (TAG) and polar lipid profiles. Heat stress (temperature-humidity index up to 84) was associated with a reduction in TAG groups containing short- and medium-chain fatty acids and a concomitant increase in those containing long-chain fatty acids. The abundance of five polar lipid classes including phosphatidylethanolamine, phosphatidylserine, phosphatidylcholine, lysophosphatidylcholine and glucosylceramide, was found to be significantly reduced during heat stress. Lysophosphatidylcholine, showing the greatest reduction in concentration, also displayed a differential response between heat tolerant and heat susceptible cows during heat stress. This phospholipid could be used as a heat stress biomarker for dairy cattle. Changes in TAG profile caused by heat stress are expected to modify the physical properties of milk fat, whereas the reduction of phospholipids may affect the nutritional value of milk. The results are discussed in relation to animal metabolism adaptation in the event of acute heat stress.Z. LiuV. EzernieksJ. WangN. Wanni ArachchillageJ. B. GarnerW. J. WalesB. G. CocksS. RochfortNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Z. Liu V. Ezernieks J. Wang N. Wanni Arachchillage J. B. Garner W. J. Wales B. G. Cocks S. Rochfort Heat Stress in Dairy Cattle Alters Lipid Composition of Milk
description	Abstract Heat stress, potentially affecting both the health of animals and the yield and composition of milk, occurs frequently in tropical, sub-tropical and temperate regions. A simulated acute heat stress experiment was conducted in controlled-climate chambers and milk samples collected before, during and after the heat challenge. Milk lipid composition, surveyed using LC-MS, showed significant changes in triacylglycerol (TAG) and polar lipid profiles. Heat stress (temperature-humidity index up to 84) was associated with a reduction in TAG groups containing short- and medium-chain fatty acids and a concomitant increase in those containing long-chain fatty acids. The abundance of five polar lipid classes including phosphatidylethanolamine, phosphatidylserine, phosphatidylcholine, lysophosphatidylcholine and glucosylceramide, was found to be significantly reduced during heat stress. Lysophosphatidylcholine, showing the greatest reduction in concentration, also displayed a differential response between heat tolerant and heat susceptible cows during heat stress. This phospholipid could be used as a heat stress biomarker for dairy cattle. Changes in TAG profile caused by heat stress are expected to modify the physical properties of milk fat, whereas the reduction of phospholipids may affect the nutritional value of milk. The results are discussed in relation to animal metabolism adaptation in the event of acute heat stress.
format	article
author	Z. Liu V. Ezernieks J. Wang N. Wanni Arachchillage J. B. Garner W. J. Wales B. G. Cocks S. Rochfort
author_facet	Z. Liu V. Ezernieks J. Wang N. Wanni Arachchillage J. B. Garner W. J. Wales B. G. Cocks S. Rochfort
author_sort	Z. Liu
title	Heat Stress in Dairy Cattle Alters Lipid Composition of Milk
title_short	Heat Stress in Dairy Cattle Alters Lipid Composition of Milk
title_full	Heat Stress in Dairy Cattle Alters Lipid Composition of Milk
title_fullStr	Heat Stress in Dairy Cattle Alters Lipid Composition of Milk
title_full_unstemmed	Heat Stress in Dairy Cattle Alters Lipid Composition of Milk
title_sort	heat stress in dairy cattle alters lipid composition of milk
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/c5ec939b5f5d4c3195953e8162f31bf2
work_keys_str_mv	AT zliu heatstressindairycattlealterslipidcompositionofmilk AT vezernieks heatstressindairycattlealterslipidcompositionofmilk AT jwang heatstressindairycattlealterslipidcompositionofmilk AT nwanniarachchillage heatstressindairycattlealterslipidcompositionofmilk AT jbgarner heatstressindairycattlealterslipidcompositionofmilk AT wjwales heatstressindairycattlealterslipidcompositionofmilk AT bgcocks heatstressindairycattlealterslipidcompositionofmilk AT srochfort heatstressindairycattlealterslipidcompositionofmilk
_version_	1718388920391041024

Heat Stress in Dairy Cattle Alters Lipid Composition of Milk

Ejemplares similares