Volume 12, Issue 33 (10-2021)                   rap 2021, 12(33): 10-18 | Back to browse issues page


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Khademnasi F, Taheri H R. (2021). Effect of Qualitative Feed Restriction and Duration of its Application on Performance, Blood Biochemical Parameters, and Carcass Characteristics of Broiler Chickens. rap. 12(33), 10-18. doi:10.52547/rap.12.33.10
URL: http://rap.sanru.ac.ir/article-1-1134-en.html
University of Zanjan
Abstract:   (1887 Views)
In the present research, decrease of dietary nutrients concentration and duration of its using were investigated on performance of broiler chicken. A total of 375 one-day-old male broiler chickens were used in 5 treatments and 5 replicates per treatment of 15 birds per each from 1 to 39 d. In the present study, “normal” diet is referred to a diet based on recommended requirements of broiler chicken strain, and “diluted” diet is referred to a diet diluted 7% for energy and essential amino acids. Experimental diets (respectively, for starter, grower and finisher periods) in the treatments were: T1) normal, normal, normal (control); T2) diluted, diluted, diluted; T3) normal, diluted, normal; T4) diluted, diluted, normal; and T5) normal, normal, diluted. In the whole period (1 to 39 d of age), daily feed intake (p<0.05) and daily weight gain (p<0.01) of control were greater than other treatments. Feed conversion ratio did not show a significant difference among treatments. In the finisher period, mortality was greater in control than T2 and T3 (p<0.05); however, in the whole period, there was no significant difference among treatments. Breast weight was greater in control and T3 than T2, T4 and T5 (p<0.01). The T2 and T3 had the greater bone ash than control and T5 (p<0.05). In general, using the normal diet through the whole period showed the best growth performance, although this treatment revealed the increased mortality and decreased bone ash during finisher period.
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Type of Study: Research | Subject: تغذیه طیور
Received: 2020/09/13 | Revised: 2021/12/5 | Accepted: 2021/03/8 | Published: 2021/10/2

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