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Influence of management type and stage of lactation on the performance and milk fatty acid profile of dairy camels (Camelus dromedaries)

Published online by Cambridge University Press:  15 January 2019

Moez Ayadi ,
Mohamed Hammadi ,
Ramon Casals ,
Moufida Atigui ,
Touhami Khorchani ,
Emad M. Samara Open the ORCID record for Emad M. Samara [Opens in a new window] ,
Khalid A. Abdoun ,
Ahmed A. Al-Haidary  and
Gerardo Caja
Moez Ayadi*
Affiliation:
Department of Animal Production, College of Food and Agriculture Science, King Saud University, Riyadh, Saudi Arabia Département de Biotechnologie Animale, Institut Supérieur de Biotechnologie de Beja, Université de Jendouba, Beja, Tunisia
Mohamed Hammadi
Affiliation:
Laboratoire d’Élevage et Faune Sauvage, Institut des Régions Arides, Médenine, Tunisia
Ramon Casals
Affiliation:
Grup de Recerca en Remugants, Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, Bellaterra, Spain
Moufida Atigui
Affiliation:
Laboratoire d’Élevage et Faune Sauvage, Institut des Régions Arides, Médenine, Tunisia
Touhami Khorchani
Affiliation:
Laboratoire d’Élevage et Faune Sauvage, Institut des Régions Arides, Médenine, Tunisia
Emad M. Samara*
Affiliation:
Department of Animal Production, College of Food and Agriculture Science, King Saud University, Riyadh, Saudi Arabia
Khalid A. Abdoun
Affiliation:
Department of Animal Production, College of Food and Agriculture Science, King Saud University, Riyadh, Saudi Arabia
Ahmed A. Al-Haidary
Affiliation:
Department of Animal Production, College of Food and Agriculture Science, King Saud University, Riyadh, Saudi Arabia
Gerardo Caja
Affiliation:
Grup de Recerca en Remugants, Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, Bellaterra, Spain
*
Author for correspondence: M. Ayadi and E. M. Samara, E-mail: mayadi@ksu.edu.sa: dremas@ksu.edu.sa
Author for correspondence: M. Ayadi and E. M. Samara, E-mail: mayadi@ksu.edu.sa: dremas@ksu.edu.sa
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Abstract

The current research paper addresses the hypothesis that management system (grazing vs. stabling) and/or stage of lactation (early- to late-lactation) can influence the lactation performance and milk fatty acid (MFA) profile in dromedary camels. The results obtained revealed that milk and protein yields of stabled camels were higher, while milk fat content was lower compared to grazing camels. In addition, stabled camels produced milk richer in short- and medium-chains fatty acids but lower in long-chain fatty acids and fatty acids linked with possible health benefits such as oleic acid, vaccenic acid (VA) and rumenic acid (RA), when compared to grazing camels. Moreover, atherogenicity index was higher, while overall Δ9-desaturase and health-promoting indices were lower in stabled camels. In a similar way, results demonstrated an increase in milk fat and protein contents as lactation advanced. In fact, camels at mid-lactation produced milk richer in short- and medium-chain fatty acids as well as total saturated fatty acids but poorer in oleic acid, VA, RA, long-chain fatty acids and total unsaturated fatty acids, when compared to milk samples collected at early stage of lactation. Moreover, compared to early- and late-lactations, atherogenicity index was higher while overall-Δ9-desaturase and health promoting indexes were lower at mid-lactation. In conclusion, the intensive stabling system and mid-lactation stage can alter lactation performance and MFA profile in dairy dromedary camels.

Keywords

Dromedaryconjugated linoleic acidrumenic acidΔ9-desaturasehuman health
Type
Animal Research Paper
Information
The Journal of Agricultural Science , Volume 156 , Issue 9 , November 2018 , pp. 1111 - 1122
Copyright
Copyright © Cambridge University Press 2019 

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