Growth performances and abdominal fat deposition in broilers fed finisher diets with different energy and protein concentrations
2000
Ashenafi Mengistu | Alemu Yami
A 4 x 4 factorial experiment in a completely randomized design using four levels of energy (2600, 2700, 2800 and 2900 kcal ME/kg) and four of protein (18, 20, 22 and 24% CP) was conducted at the Debre Zeit Agricultural Research Center to study the effect of different energy and protein levels of finisher diets on growth performances and abdominal fat deposition in broilers. Increasing the energy concentration continuously improved the overall growth performance and the chicks which received the diet with 2900 kcal ME/kg sup(-1) and 24 percent CP showed the highest (p0.05) abdominal fat content. However, the continuous improvements in daily weight gain, dry matter utilization efficiency and nutrient potency with increasing levels of energy demonstrate that fat deposition, even in those chicks for which the highest abdominal fat weight was recorded, did not go to the extent which results in negative effects on the growth performances.
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