PRODUCTIVE AND PHYSIOLOGICAL RESPONSES TO VITAMIN 03 AND C SUPPLEMENTATION IN . BANoARA HENS | ||||
| Journal of Animal and Poultry Production | ||||
| Article 2, Volume 29, Issue 12, December 2004, Page 6829-6842 PDF (4.08 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jappmu.2004.239447 | ||||
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| Authors | ||||
| Y. A. Mariey,; H. R. Samak; A. M. EL-Wardany | ||||
| Animal Production Res. Institute, Agric. Res. Center, Dokki, Giza, Egypt. | ||||
| Abstract | ||||
| An experiment was conducted to determine the effect of dietary vitamin 03 (0, 300 or 600 IU) and vitamin C supplementation (0, 250 or 500 mg / kg of ration) on some physiological responses and productive performance of Bandara strain. A total number of 270 hens of Bandara local strain aged 22 weeks were selected and divided randomly into 3 experimental groups (each of 90 hens) according to vitamin 03 supplementation (0, 300 or 600 lUI kg of ration) and each group was divided into 3 subgroups (each of 30 hens) according to vitamin C supplementation (0, 250 and 500 mg/kg of ration). Results obtained could be summarized as follows: Pullets fed combination of 300 IU vitamin 03 and 250 mg of vitamin C /Kg ration increased significantly egg Shell weight percentage and thickness (13.51 % andO.34 mm, respectively) than those of control (11.85% and 0.31 mm, respectively). Pullets fed 600 IU of vitamin 03 and 500 mg vitamin C /Kg ration improved significantly feed conversion (3.07 g feed/g egg), rate of egg production (67.8%/hen/day), egg mass (33.03 gm/hen/day), fertility percentage (94.79%), Calcium balance (68.53%), total calcium absorption, absorption/cm length or per gram dry matter / hour through the intestinal parts (22.89 mg/hr, 0.467 mg/cm and 8.33 mg/gm, respectively) and increased significantly plasma calcium and inorganic phosphorus (21.75 and 5.80 mg/dl, respectively) compared with those of other treatments or control (18.74 and 5.65 mg/dl, respectively). Pullets fed 300 IU vitamin03 and 500mg vitamin C had significantly the highest percentage of hatchability (94.59%) compared with those of control (88.90%). Pullet's age had significant effect on feed intake, feed conversion, egg production, egg weight, mass, proportional shell weight, shell thickness, plasma calcium and inorganic phosphorus. Supplemented diet with Vitamins 03 and C at a level of (600 IU and 500 mg/kg, respectively) seemed to be adequate to achieve the favorable results and may be recommended for the economic point view. | ||||
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