Protein consumption and efficiency of Kedu, Arab and their crossing chickens fed diets with different protein levels [electronic resouce].

Includes references.

The experiment was aimed to determine protein consumption and efficiency of Kedu, Arab and their cross chickens fed diets with different levels of protein. Seven week-old of Kedu Arab and their cross chickens, were used in this experiment. The experimental birds were divided into 3 groups of chicken based on body weight. The chickens were reared in experimental house containing 27 pens (J x 0,5 x 0,5 mY. Experimental diets were formulated to contain 16, 18, and 20% protein but having the same calorie (2.800 kca//kg). The experimental design was Split Plot Design, the main plots were three local chickens (Kedu, Arab and their crossing chickens) and the subplots were protein levels (16, 18 dan 20%). Each treatment contains three replicates of 8 chickens. The parameters measured were protein consumption, nitrogen retention and protein efficiency ration. The result showed that protein consumption was higher at 18 and 20% protein levels. Protein efficiency was higher at 16% protein level, but nitrogen retention was not significantly different among all protein levels. It can be concluded that 16% protein level was the optimal for Kedu, Arab and their cross chickens during the period from 7 to 13 weeks of age,

Summary in Arabic.

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