Urip Santoso
Department of Animal Science, Faculty of Agriculture, Bengkulu University, Bengkulu Indonesia
Abstract: This experiment was conducted to evaluate the effect of physical early feed restriction on growth, serum lipid fractions and meat composition of broiler chickens. Five hundred broilers (7 days of age) were divided into 10 groups and five times repetition.one group was fed ad libitum as the control group and the other nine groups were fed 25% ad libitum for 3, 6 or 9 days, 50% ad libitum for 3, 6 or 9 days, and 75% ad libitum for 3, 6 or 9 days. Thereafter, they were fed ad libitum to 42 days of age. The broilers were fed with a commercial starter diet from 1 to 28 days of age, and commercial finisher diet from 29 to 42 days of age. The broilers were weighed individually on a weekly basic except during the feed restriction period. The feed comsumption was recorded daily. The results showed that broilers showed compensatory growth if they were fed 75% ad libitum for 3, 6 or 9 days, or 50% ad libitum for 3 days. The feed coversion ratio was significantly lower in broilers fed 25% ad libitum for 6 or 9 days, 50% ad libitum for 3 or 9 days, 75% ad libitum for 3 days (P<0.05). Triglyceride concentration in serum was significantly lower in restricted broilers (P<0.01), whereas cholesterol concentration was not different. Abdominal fat was not significantly different. Ash meat was significantly higher in restricted broilers the content of moisture, fat, and protein in meat was not significantly different. In conclusion, to achieve the best results, broilers should be fed 75% or 50% ad libitum for 3 days. (Majalah Ilmiah Peternakan, 5 (3): 73-77, 2002).
Key words : Early feed restriction, compensatory growth, meat composition, broiler
Department of Animal Science, Faculty of Agriculture, Bengkulu University, Bengkulu Indonesia
Abstract: This experiment was conducted to evaluate the effect of physical early feed restriction on growth, serum lipid fractions and meat composition of broiler chickens. Five hundred broilers (7 days of age) were divided into 10 groups and five times repetition.one group was fed ad libitum as the control group and the other nine groups were fed 25% ad libitum for 3, 6 or 9 days, 50% ad libitum for 3, 6 or 9 days, and 75% ad libitum for 3, 6 or 9 days. Thereafter, they were fed ad libitum to 42 days of age. The broilers were fed with a commercial starter diet from 1 to 28 days of age, and commercial finisher diet from 29 to 42 days of age. The broilers were weighed individually on a weekly basic except during the feed restriction period. The feed comsumption was recorded daily. The results showed that broilers showed compensatory growth if they were fed 75% ad libitum for 3, 6 or 9 days, or 50% ad libitum for 3 days. The feed coversion ratio was significantly lower in broilers fed 25% ad libitum for 6 or 9 days, 50% ad libitum for 3 or 9 days, 75% ad libitum for 3 days (P<0.05). Triglyceride concentration in serum was significantly lower in restricted broilers (P<0.01), whereas cholesterol concentration was not different. Abdominal fat was not significantly different. Ash meat was significantly higher in restricted broilers the content of moisture, fat, and protein in meat was not significantly different. In conclusion, to achieve the best results, broilers should be fed 75% or 50% ad libitum for 3 days. (Majalah Ilmiah Peternakan, 5 (3): 73-77, 2002).
Key words : Early feed restriction, compensatory growth, meat composition, broiler
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