干旱区生态环境知识资源中心(Arid): Camels and cattle respond differently in milk phenol excretion and milk fatty acid profile to free ranging conditions in East-African rangelands

Arid

DOI	10.1016/j.sciaf.2021.e00896
	Camels and cattle respond differently in milk phenol excretion and milk fatty acid profile to free ranging conditions in East-African rangelands
	Leparmarai, Paul Taipa; Kunz, Carmen; Mwangi, David Miano; Gluecks, Ilona; Kreuzer, Michael; Marquardt, Svenja
通讯作者	Leparmarai, PT (corresponding author), Swiss Fed Inst Technol, Inst Agr Sci, Anim Nutr, Eschikon 27, CH-8315 Lindau, Switzerland.
来源期刊	SCIENTIFIC AFRICAN
ISSN	2468-2276
出版年	2021
卷号	13
英文摘要	Camels are getting increasingly important for pastoral livestock systems in arid and semiarid rangelands of East Africa that are adversely affected by climate change. Cattle are more susceptible to drought than camels and rely on grass, while camels are primarily browsers. Diet selection can influence the quality of the milk, especially of the milk fat. Little is known about differences in milk fatty acid profile of camels compared to cattle, especially under free-grazing conditions. Camels and two cattle types were compared on Kenyan rangelands in a rainy season and a transition period. Seventy-two lactating animals (12 per animal type per season each) were used. Half of each group received a urea molasses supplement at night. Intakes of nutrients and phenols were estimated through scan sampling. Milk was collected at the end of each season and analyzed for phenols and fatty acids. Phenol intakes varied between seasons in cattle but not in camels. Different from animal type, season had an effect on milk phenol concentration. Phenol excretion with the milk of cattle correlated with phenol intake. Proportions of mono-and polyunsaturated fatty acids were higher in camel milk than cattle milk. Cattle milk contained more conjugated linoleic acids than camel milk in the rainy season. Proportions of oleic, linoleic, alpha-linolenic and eicosapentaenoic acid were higher, whereas n-6-to-n-3 fatty acid ratio was lower in camel milk than cattle milk. Camels may have developed control mechanisms limiting adverse effects and transfer of phenols to milk in response to their higher intake of phenol-rich browse. In conclusion, camel milk seems to be more beneficial for human health and nutrition than cattle milk by its characteristic fatty acid profile. This can be another motivation for switching from cattle to camels in arid/semi-arid areas affected by climate change. (c) 2021 Published by Elsevier B.V. on behalf of African Institute of Mathematical Sciences / Next Einstein Initiative.
英文关键词	Animal species Fatty acid Season Rangeland Supplementation
类型	Article
语种	英语
开放获取类型	gold
收录类别	ESCI
WOS记录号	WOS:000704939100007
WOS关键词	SECONDARY METABOLITES ; CHEMICAL-COMPOSITION ; DIVERSIFICATION ; GOATS ; ADAPTATION ; RUMINANTS ; BEHAVIOR ; CLIMATE ; QUALITY ; SALIVA
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364649
作者单位	[Leparmarai, Paul Taipa; Kunz, Carmen; Kreuzer, Michael; Marquardt, Svenja] Swiss Fed Inst Technol, Inst Agr Sci, Anim Nutr, Eschikon 27, CH-8315 Lindau, Switzerland; [Leparmarai, Paul Taipa; Mwangi, David Miano] Kenya Agr & Livestock Res Org KALRO, POB 57811-0020, Nairobi, Kenya; [Gluecks, Ilona] Int Livestock Res Inst ILRI, Biosci, POB 30709, Nairobi, Kenya
推荐引用方式 GB/T 7714	Leparmarai, Paul Taipa,Kunz, Carmen,Mwangi, David Miano,et al. Camels and cattle respond differently in milk phenol excretion and milk fatty acid profile to free ranging conditions in East-African rangelands[J],2021,13.
APA	Leparmarai, Paul Taipa,Kunz, Carmen,Mwangi, David Miano,Gluecks, Ilona,Kreuzer, Michael,&Marquardt, Svenja.(2021).Camels and cattle respond differently in milk phenol excretion and milk fatty acid profile to free ranging conditions in East-African rangelands.SCIENTIFIC AFRICAN,13.
MLA	Leparmarai, Paul Taipa,et al."Camels and cattle respond differently in milk phenol excretion and milk fatty acid profile to free ranging conditions in East-African rangelands".SCIENTIFIC AFRICAN 13(2021).