Determination of methionine requirements of Arian broiler chickens by using performance responses in the grower period | ||
| علوم و فنون دامپروری | ||
| Article 9, Volume 4, Issue 16, December 2015, Pages 77-84 PDF (1.21 M) | ||
| DOI: 10.22092/aasrj.2015.106553 | ||
| Authors | ||
| M. Rahimi Taromi; S. A. Hoseini* ; S. M. Mehdizadeh | ||
| Abstract | ||
| In order to determination the methionine requirement of Arian broilers chickens during the grower period, a trial with 700 broiler chickens in a completely randomized design with 7 treatments, 5 replicates was performed. Experimental groups were consisted of 0.29, 0.36, 0.43, 0.50, 0.57, 0.64, and 0.71 % of methionine. Body weight in 28 days of age, daily weight gain, modified feed conversion ratio based on hen day were affected by levels of methionine in the period of 14-28 days of age (p<0.05). So that in 28 days of age, the highest body weight (1314 gr) and the lowest of its value (1215 gr) were respectively relative to 0.71 and 0.29. In period of 14-28 days of age, the best daily weight gains in level of 0.64 and the worst of it relative to 0.29. Broken line model were fitted for feed conversion and weight gain for periods 14-21 and 14-28, weight of 21 and 28 days of age. Methionine requirement for live weight of 21 and 28 days of age respectively was 0.524 and 0.543 percent of diet. Requirement for weight gain of 14-21 and 14-28 days of age respectively was 0.50 and 0.558 percent of diet, and feed conversion ratio in mentioned periods respectively was 0.512 and 0.526 percent. So, According to Result, Using 0.52 to 0.56 were suggested for Arian broiler in grower periods. | ||
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