Volume 1, Issue 1 (5-2010)                   rap 2010, 1(1): 55-70 | Back to browse issues page

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Sharifi M, Shams Shargh M, Dastar B, Hasani S. Effect of Different Levels of Dietary Protein and Synbiotic on Performance and Carcass Characteristics of Japanese Quail. rap. 2010; 1 (1) :55-70
URL: http://rap.sanru.ac.ir/article-1-157-en.html
Gorgan Agricultural Sciences and Natural Resources University
Abstract:   (5854 Views)
An experiment was conducted to evaluate the effect of protein and synbiotic levels performance and carcass characteristics of Japanese quail. The experiment was done using 720 day old quail for 42 days in a completely randomized design with 3×3 factorial arrangements with three levels of protein (sufficient protein diet (24%) during whole period, low protein diet (22.08%) during whole period and sufficient protein diet during starter period-low protein diet during grower period) and three levels of Synbiotic (without, the recommended level and 150% of recommended level). All diets were isocaloric except for protein and were consisted of recommended levels of nutrients (NRC, 1994). Body weight gain, feed intake and feed conversion ratio were not differ statistically (P>0.05), due to interaction of protein and synbiotic levels. Body weight gain and energy efficiency ratio in starter and whole growing periods was lower (P<0.05) in quails received diets containing low protein in starter period. Feed conversion ratio and performance index in whole period was imperoved (P<0.05) in teratments with higher level of protein in starter period. Reduction of protein content of diets during growing period had not significant effect on these parameters. Protein efficiency ratio improved (P<0.05) with decreasing protein level, while synbiotic levels were not differing among treatmeats. Protein and synbiotic levels and their intraction had not significant effect on carcass characteristics.
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Type of Study: Research | Subject: Special
Received: 2013/04/29 | Revised: 2019/02/13 | Accepted: 2013/04/29 | Published: 2013/04/29

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