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| Year : | 2012 |
| Tome : | 163 |
| Volume : | 8-9 |
| Pages : | 411-414 |
| Title : | Growth and blood biochemical effects of dietary supplementation with ractopamine, a β-adrenergic agonist, in female broiler chickens |
| Authors : | F. KHEIRI, J. NASR |
| Summary : | The present experiment was carried out to investigate the effects of dietary added ractopamine, a β-adrenergic receptor agonist, as growth promoter on female broiler chickens. A total of 180 female broiler chickens, 3 week old, were randomly divided in 5 replicates for each dietary treatment corresponding to 0, 5 and 10 mg/kg of ractopamine added to the basal growing diet for 3 weeks. Body weight gain, food intake and food efficiency were not significantly modified with ractopamine addition. By contrast, serum cholesterol, triglyceride, uric acid, BUN (Blood Urea Nitrogen) and albumin concentrations were significantly depressed while glycaemia was increased in birds treated with ractopamine, especially at 10 mg/kg. These results highly suggest that the β-adrenergic receptor agonist promotes glucose and lipid mobilisation but spares protein utilisation in female broiler chickens. |
| Keywords : | Ractopamine, female broiler chickens, growth performance, blood biochemical parameters, lipid metabolism |
| Correspondence : | F. KHEIRI |
| Adress : | Department of Animal Science, Shahrekord Branch, Islamic Azad University, ShahreKord, IRAN. Corresponding author: [email protected] |
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