Document Type : Research Paper
Authors
Master Science- Faculty of agriculture - Ilam University
Abstract
The effect of dietary olive leaf in diet at different periods of breeding was studied on growth performance and ascites incidence in broiler chickens. A total of 336 one day-old male broiler chickens (Arian) used in complete randomize design with 6 treatments, 4 replications and 14 birds in each replication. The period of experiment was 42 days. The rations were supplied base on recommendation of Arian broiler management guide in three phase of feeding. In each phase, tow diets were provided with 0 (control) and 1 percent of olive leaves dried in diet. The treatments were diets:1) control, 2) from 1 to 14 days olive leaf, 3) from 1 to 21 days olive leaf, 4) from 1 to 28 days olive leaf, 5) from 1 to 35 days olive leaf, 6) from 1 to 42 days olive leaf. The effects of treatments were not significant on final body weight, daily feed intake and feed conversion ratio. The mortality due to ascites syndrome was reduced in treatments of olive leaf 1 to 14 and olive 1 to 42 (P<0.05). At the end of experiment, the most of packed cell volume and hormone triiodothyronine was related to the control treatment (P<0.05). The mean of packed cell volume and T3 were significantly different between control and olive leaf from 1 to 42 days at the end of experiment (P<0.05). The difference of red blood cell count and thyroxine (T4) was not significant between all treatments. It is concluded that the inclusion of 10 g/Kg of olive leaf dried in broiler chicken diets could decrease ascites incidence without unfavorable effects on broiler chicken performance.
Keywords
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