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Discriminant milk components of Bactrian camel (Camelus bactrianus), dromedary (Camelus dromedarius) and hybrids

(Camelus bactrianus) (Camelus dromedarius)

Paramètres discriminant le lait de chameau de Bactriane (Camelus bactrianus) du lait de dromadaire (Camelus dromedarius)

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Dairy Science & Technology

Abstract

In Kazakhstan, the cohabitation of Bactrian camels, dromedaries and their hybrids is a common feature even within farms. The physico-chemical composition of 147 milk samples from 57 Bactrians, 70 dromedaries and 20 hybrids was determined. The samples came from 4 different regions and were collected at 4 different seasons within a year. Compared with dromedary, Bactrian camel milk had significantly higher fat (6.67 vs. 5.94%), vitamin C (177 vs. 152 mg·L−1), calcium (1.30 vs. 1.16 g·L−1) and phosphorus (1.07 vs. 0.91 g·L−1). The iodine index value was significantly higher in dromedary (16.69) than in Bactrian milk (14.99). To distinguish Bactrian milk from dromedary milk, a discriminant analysis was carried out after discarding seasonal and regional variability. The discriminant parameters were phosphorus (linear discriminant coefficient = −1.00), pH (−0.408), vitamin C (−0.377) and fat content (−0.226), in higher concentrations in Bactrian than in dromedary milk. The iodine index (0.287) was higher in dromedary milk. After quadratic discriminant analysis, milk composition can predict species, with 75.4% well-classed. The milk composition of the hybrids was intermediary but with a low discriminant power.

Abstract

147 (57 70 20) 4 4 (6.67 5.94%) C (177 152 mg·L−1) (1.30 1.16 g·L−1) (1.07 0.91 g·L−1) (16.69) (14.99). = −1.00) pH (−0.408) C (−0.377) (−0.226). (0.287) 75.4%.

Résumé

Au Kazakhstan, la cohabitation du chameau de Bactriane, du dromadaire et de leurs hybrides est un fait courant au sein même des fermes. La composition physico-chimique de 147 échantillons de lait provenant de 57 chameaux de Bactriane, 70 dromadaires et 20 hybrides a été déterminée. Les échantillons ont été prélevés dans 4 fermes provenant de 4 régions différentes aux 4 saisons au cours d’une année. Comparé à celui de dromadaire, le lait de chamelle de Bactriane apparaît plus riche en matière grasse (6,67 vs. 5,94 %), vitamine C (177 vs. 152 mg·L−1), calcium (1,30 vs. 1,16 g·L−1), et phosphore (1,07 vs. 0,91 g·L−1). L’indice d’iode est significativement plus élevé dans le lait de dromadaire (16,69) que dans le lait de chamelle de Bactriane (14,99). Afin de distinguer les deux types de lait, une analyse discriminante a été mise en œuvre après avoir éliminé les effets liés à la variabilité saisonnière et régionale. Les paramètres discriminants sont le phosphore (coefficient linéaire discriminant = −1,00), le pH (−0,408), la vitamine C (−0,377) et la matière grasse (−0,226), en concentrations plus élevées dans le lait de Bactriane que dans celui de dromadaire. L’indice d’iode (0,287) était plus élevé dans le lait de dromadaire. Après une analyse discriminante quadratique, on peut prédire d’après la composition du lait, l’origine spécifique avec un pourcentage de bien classés de 75,4 %. La composition chimique du lait des hybrides s’est avérée intermédiaire mais avec un faible pouvoir discriminant.

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Authors and Affiliations

  1. Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), Campus international de Baillarguet TA C/dir B, 34398, Montpellier Cedex, France

    Bernard Faye, Gaukhar Konuspayeva, Samir Messad & Gérard Loiseau

  2. Kazakh State University Al Farabi, 71 av. Al-Farabi, 050013, Almaty, Kazakhstan

    Gaukhar Konuspayeva

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  1. Bernard Faye
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  2. Gaukhar Konuspayeva
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  3. Samir Messad
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  4. Gérard Loiseau
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Correspondence to Bernard Faye.

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Faye, B., Konuspayeva, G., Messad, S. et al. Discriminant milk components of Bactrian camel (Camelus bactrianus), dromedary (Camelus dromedarius) and hybrids. Dairy Sci. Technol. 88, 607–617 (2008). https://doi.org/10.1051/dst:2008008

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  • DOI: https://doi.org/10.1051/dst:2008008

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