Blood and meat vitamin d in the dromedary camel (Camelus dromedarius)

El Khasmi Mohammed, Tabite Rabab, Farh Mohamed, Riad Fouad, El Abbadi Najia, Elhassane Tahri, Faye Bernard. 2019. Blood and meat vitamin d in the dromedary camel (Camelus dromedarius). In : Third International Selçuk-Ephesus Symposium on Culture of Camel Dealing and Camel Wrestling. Koç Atakan (ed.), Erdogan Ogretim Uyesi Hasan (ed.). Selçuk : Selçuk Belediyesi Selçuk Efes Kent Belleği Yayınları, 183-208. ISBN 978-605-69947-2-2 International Selçuk-Ephesus Symposium on Culture of Camel Dealing and Camel Wrestling. 3, Selçuk, Turquie, 17 Janvier 2019/19 Janvier 2019.

Résumé : Camel meat contains minerals, proteins, good cholesterol and vitamins. Without doubt, in Human, vitamin D is of great importance for health and recommendations for it's intake have recently been increased considerably. In domestic ruminants, circulating vitamin D levels may be influenced by several factors such as photoperiod, nutrition, physiological stage, ambient temperature, attitude and season, whereas, in meat, vitamin D content may be impacted by vitamin D status of animal, ageing and cooking. Thus, highlighting physiological role of this hormone justifies its growing interest. However, the information available on nutritional value of camel meat is very limited, and in the litterature, there are very few reports evaluating the vitamin D levels and their variations in blood and meat in the dromedary camel. In this context, this review proposes a synthesis of current knowledge about the vitamin D in the dromedary camel and discusses findings in light of those obtained in other mammal animals. In the camel, 25-hydroxyvitamin D3 (25-OH-D3) amounts in serum (ng/mL), liver, kidney and muscle (ng/g) were 390±45; 7.071±1.003; 6.154±1.067 and 4.241±1.045 respectively. Values in liver were significantly higher (P<0.05) than those of muscle. Serum 25-OH-D3 levels in camels were 10 to 15 times very higher than those of ruminant species. The circulating levels of 25-OH-D and 1,25-dihydroxyvitamine D were very high in lactating camels and their newborns , suggesting a good intestinal absorption, mammary excretion and bone ixation of calcium (Ca) and phosphorus (Pi). In fact these metabolites increased the levels of Ca and Pi in the blood of newborn camel and the milk of lactating camels. The circulating levels of 25-OH-D were not influenced by transport stress, but, were significantly (P<0.05) lower during winter than those observed during summer, while, tissue levels of 25-OH-D3 showed no seasonal variation. The camel meat is a good source of 25-OH-D and during a cold storage at 4°C of 10 days, raw and cooked meat levels of 25-OH-D showed no significant variation. Furthermore, these levels were positively correlated with pH and negatively correlated with redness of juice, drip loss and malondialdehyde contents. To conclude, in the dromedary camel, 25-OH-D may be implicated in bone metabolisme during lactation and postnatal growth, quality characteristics of meat, antioxidant status of blood and meat and other functions like immunity and reproduction.

Auteurs et affiliations

• El Khasmi Mohammed, Université Hassan II de Casablanca (MAR)
• Tabite Rabab, Université Hassan II de Casablanca (MAR)
• Farh Mohamed, Université Hassan II de Casablanca (MAR)
• Riad Fouad, Université Hassan II de Casablanca (MAR)
• El Abbadi Najia, CNESTEN (MAR)
• Elhassane Tahri, Université Hassan II de Casablanca (MAR)
• Faye Bernard, CIRAD-ES-UMR SELMET (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/594884/)

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