Effect of vitamin A on Some Productive , Physiological and histological traits of the local ducks (Anaspaterhycous) | ||
| Journal of Basrah Researches (Sciences) | ||
| Article 1, Volume 40, Issue 2, December 2014, Pages 14-22 PDF (0 K) | ||
| Author | ||
| Khalid ChillabKridie Al-salhie | ||
| Abstract | ||
| Ninety, one old local duckling that weighed 50 g were randomly divided into 3 groups with 3 replicates per treatment. The aim of this study was to investigate the influence of increased vitamin A levels on the production performance, some physiological traits and histological characteristics . Supplemental levels were: 4000, 8000 IU and 0 vitamin A dissolved in sunflower oil was given directly into the mouth via syringe for twice during the first week after hatch . Vitamin A levels had no significant (P<0.05) effect on feed intake and relative heart and liver weight . Supplemented with 8000 IU vitamin A increased the body weight and weight gain significantly (P<0.05) and improved feed conversion ratio more than supplemented with 0 IU vitamin A . The influence of vitamin A 8000IU on hemoglobin concentration , PCV and erythrocyte count was significantly increased (P <0.05) (P<0.01) respectively at 7 weeks of age. But had no significant (P<0.05) effect on the percentage of lymphocytes , granular and monocytes cells . In addition, vitamin A had no significant (P<0.05) effect on serum thyroxin hormone , glucose and cholesterol levels . Histological study showed that villi height , crypt depth were increased as vitamin A supplement increased (4000 , 8000 IU) . In conclusion, feed supplemented ducks with 8000 IU vitamin A led to better growth rate and better performance of local ducks. | ||
| Keywords | ||
| Vitamin A; Weight; Physiological Traits; Duckling | ||
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