Volume 8, Issue 18 (3-2018)                   rap 2018, 8(18): 47-56 | Back to browse issues page

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Maleki K, Kazemi-Fard M, Rezaei M, Jafari-Sayadi A. The Effect of Quantitative and Qualitative Feed Restriction of Broiler Chicken on the Prevention of Ascites Syndrome. rap. 2018; 8 (18) :47-56
URL: http://rap.sanru.ac.ir/article-1-894-en.html
Abstract:   (285 Views)
This experiment was conducted to compare the qualitative feed restriction and meal feeding on the performance, carcass yield and Ascites syndrome in Ross-308 broiler chickens. One hundred eighty day-old chicks raised for 42-d in a completely randomized design with five treatments, three replicates and 12 chicks per each pen. Experimental treatments included: 1) ad-libitum intake, 2) ad-libitun intake plus levothyroxin (1.6 mg/kg of diet), 3) eight-hours feed restriction per day from 7 to 14 days, 4) Ninety-five percent of straw requirements, 5) Ninety percent of straw requirements. In order to induce Ascites, 1.6 mg /kg of levothyroxine hormone were added to all treatments except for the control treatment from the day 25 of the experiment. The results showed that at the end of the experiment, body weight of the chickens that were received levothyroxine and 8 hours of feed restriction were significantly lower than control treatment (P<0.05). It was also shown that FCR of the 8-hours restriction and 90% of the requirements treatments were significantly different with control (P <0.05). Feed restriction up to 95% of requirements increased the percentage of breast, as well as the quantitative and qualitative limitations of the feed, reduced abdominal fat content compared to control (P <0.05).Overlay, the results of this experiment showed that the 8-hour restriction was much more severe than 90 and 95% limited of feed requirements, and compensatory growth in chickens that received 8-hour restriction was much less than other treatments.
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Type of Study: Research | Subject: Special

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