Relationship between udder morphology traits, alveolar and cisternal milk compartments and machine milking performances of dairy camels (Camelus dromedarius)

Ayadi Moez, Aljumaah Riyadh Saleh, Musaad Abdelgader, Samara Emad Mohammed, Abelrahman M.M., Alshaikh M.A., Saleh Saeed K., Faye Bernard. 2013. Relationship between udder morphology traits, alveolar and cisternal milk compartments and machine milking performances of dairy camels (Camelus dromedarius). Spanish Journal of Agricultural Research, 11 (3) : 790-797.

Quartile : Q3, Sujet : AGRICULTURE, MULTIDISCIPLINARY

Résumé : A total of 22 dairy dromedary camels under intensive conditions in late lactation (275 ± 24 days) were used to study the relationship between external and internal udder morphology and machine milking performances. Measurements of udder and teat morphology were obtained immediately before milking and in duplicate. Individual milk yield, lag time and total milking time were recorded during milking, and milk samples were collected and analyzed for milk composition thereafter. Cisternal and alveolar milk volumes and composition were evaluated at 9 h milking interval. Results revealed that dairy camels had well developed udders and milk veins, with medium sized teats. On average, milk yield as well as milk fat and protein contents were 4.80 ± 0.50 L d-1, 2.61 ± 0.16% and 3.08 ± 0.05%, respectively. The low fat values observed indicated incomplete milk letdown during machine milking. Lag time, and total milking time were 3.0 ± 0.3, and 120.0 ± 8.9s, on average, respectively. Positive correlations (p < 0.05) were observed between milk yield and udder depth (r = 0.37), distance between teats (r = 0.57) and milk vein diameter (r = 0.28), while a negative correlation was found with udder height (r = -0.25, p < 0.05). Cisternal milk accounted for 11% of the total udder milk. Positive correlations were observed between total milk yield and volume of alveolar milk (r = 0.98; p < 0.001) as well as with volume of cisternal milk (r = 0.63, p < 0.05). Despite the low udder milk storage capacity observed in dairy camels, our study concluded that the evaluated dromedary sample had adequate udder morphology for machine milking. Finally, positive relationships were detected between milk yield and udder morphology traits of dairy camels.

Mots-clés Agrovoc : dromadaire, machine à traire, trayon, efficacité d'utilisation, morphologie animale, traite des animaux, mécanisation, glande mammaire, lait de chamelle, rendement laitier, performance animale, Camelus dromedarius

Mots-clés géographiques Agrovoc : Arabie Saoudite

Classification Agris : L40 - Anatomie et morphologie des animaux
N20 - Machines et matériels agricoles
L01 - Élevage - Considérations générales

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

• Ayadi Moez, King Saud University (SAU)
• Aljumaah Riyadh Saleh, King Saud University (SAU)
• Musaad Abdelgader, Range Protection and Improvement Center in Al-Jouf Area (SAU)
• Samara Emad Mohammed, King Saud University (SAU)
• Abelrahman M.M., King Saud University (SAU)
• Alshaikh M.A., King Saud University (SAU)
• Saleh Saeed K., Camel and Range Research Center (SAU)
• Faye Bernard, CIRAD-ES-UMR SELMET (SAU)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/571007/)

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