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The effects of using saturated and unsaturated fats and diet saving time on performance, carcass traits and blood lipids of broilers in hot weather | ||
| علوم و فنون دامپروری | ||
| Article 2, Volume 5, Issue 19, September 2016, Pages 9-20 PDF (1.15 M) | ||
| DOI: 10.22092/aasrj.2016.107584 | ||
| Authors | ||
| A. Shaddel; A. Nobakht* | ||
| Abstract | ||
| This experiment was conducted to evaluate the effects of using saturated and unsaturated fats and diet saving time on performance, carcass traits and blood lipids composition of broiler chicks in hot weather. This experiment carried out as (2*5) factorial method contained 5 levels of fat (0, 3 and 6% beef tallow, 3 and 6% canola oil) and 2 period of diet saving time (6 and 12 days) in hot weather with 480 Ross- 308 broilers in 10 treatments, 4 replicate and 12 chicks in each replicate from 11 to 42 days in a completely randomized design. 6% canola oil in diet reduced the amount of daily feed intake, improved feed conversion ratio and increased production index (P<0.05). The amount of daily weight gain had not affected by sources and levels of using fats (P>0.05). The diets saving time and interaction of fat sources and diets saving time had no significant effects on performance of broilers (P>0.05). Using 6% canola oil in diets improved the carcass percent of broilers (P<0.05). Fat sources and saving time of diets had no significant effects of blood lipids of broilers (P>0.05). The overall results showed that in hot weather, using 6% canola oil in broiler diets without having any effects on blood lipids composition, can improve the performance and carcass traits. In this weather condition, saving diets with higher levels of fats without having any adverse effects on broiler performance is possible | ||
| Keywords | ||
| Blood lipids; Beef tallow; Canola oil; performance | ||
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