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Change in Udder Measurements Traits during Lactation and Its Relationship with Milk Yield in Dairy Camel (Camelus Dromedaries)
| Content Provider | Semantic Scholar |
|---|---|
| Author | Musaad, Abdelgadir Faye, Bernard Khalil, Ahmed J. Ayadi, Moez Al-Jumaah, Riyadh S. |
| Copyright Year | 2017 |
| Abstract | A total of 77 multiparous dromedary camels were used to evaluate the change of udder morphology traits after a machine milking and to study the evolution of udder traits during early (wk10), mid (wk22) and late (wk 40) stage of lactation. The measurements were taken directly before and after milking. On average the length, height, depth and circumference of the udder were 43.6±4.9, 106.9±7.7, 43.8±4.6, 97.1±6.3 cm respectively. The teat length front and rear, diameter and distance between teats were 4.85±1.85, 5.09±1.85, 3.43±1.05, 8.92±1.92 cm respectively before milking. Udder length and height did not change before and after milking while udder depth and circumference showed significant decrease after milking. Otherwise, high significant difference was observed in front teat length and diameter and distance between teats before and after milking. Front teat length significantly increased after milking while, teat diameter and distance between teats showed significantly decreased. Udder depth, udder circumference and distance between teats positively correlated with milk yield and affected significantly (p˂0.05) by stage of lactation and showed highest value at mid stage of lactation: 46.1±4.2, 99.9±5.3, 9.6±1.8 respectively. Teat length and diameter did not change during lactation. Total milk yield reaches the highest value at mid stage of lactation while, there were no differences appearing between early and late stage of lactation. Three types of udder were identified, smallest udder with the smaller teats, medium udder with long teats and biggest udder with medium teats. Udder depth, circumference, teat diameter and distance between teats differed significantly among all types. Teat length and total milk yield showed no differences between type 1 and type 2. Udder and teats measurement changes during milking and stage of lactation increase our standing for selection lactating camels and improving camel machine milking efficiency. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.iosrjournals.org/iosr-javs/papers/Vol10-issue12/Version-1/I1012017683.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
