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Heat stress on broiler chickens has an impact on the value of feed conversion ratio (FCR), carcass weight, and abdominal fat content. These impacts can be reduced by administering plant extracts, such as salix plant extract. However, the effect of this plant extract on normal condition is still unknown. This study aimed to determine the effect of salix extract to the value of feed conversion ratio, carcass weight, and abdominal fat content in chickens with heat stress and compared with chickens in normal conditions. This study used 30 samples of 21-day old broiler chickens. This research was conducted using a complete factorial randomized design with 2 x 3 treatment factors and 5 repetitions. The first factor consisted of two treatment conditions, namely heat stress (HS) and no heat stress (nHS), while the second factor consisted of three doses of salix extract treatment, dose 0 (ES-0), 50 (ES-50), and 100 (ES-100) mg/L of drinking water. Heat stress was conducted by increasing the temperature of the cage to 34 ± 1 °C for 4 hours per day. Salix extract was added in drinking water and given 2 hours before the temperature reached 34 ± 1 °C. Chickens without heat stress were kept in the cage at 25 ± 1 °C using air-condition (AC). Data were analyzed using two way ANOVA using SPSS 20. The results showed that administration of salix extract on heat stress chickens did not affect the FCR value and carcass weight, but had a significant effect (P ≤ 0.05) on abdominal fat weight. Fat content in the abdominal was higher (P≤ 0.05) in chickens with heat stress and given salix extract than non heat stress.

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Effect of <i>Salix Tetrasperma</i> Roxb. Extract on The Value of Feed Conversion Ratio, Carcass Weight, and Abdominal Fat Content of Broiler Chicken with Heat Stress Condition

Effect of Salix Tetrasperma Roxb. Extract on The Value of Feed Conversion Ratio, Carcass Weight, and Abdominal Fat Content of Broiler Chicken with Heat Stress Condition