TAILIEUCHUNG - Performance of three breeds of broiler chicken fed with different levels of metabolizable energy

The results showed that there was no significant difference in the levels of metabolizable energy in the breeds of chickens used in the study. However, significant level of metabolizable energy effects were observed on final bodyweight, feed consumption, feed conversion ratio, performances index, breast meat yield, abdominal fat yield, crude fat content of breast muscle and inorganic matter content of breast muscle. No significant levels of metabolizable energy effects were detected in the other variables in this study. | Nguyễn Đức Trường và Đtg Tạp chí KHOA HỌC & CÔNG NGHỆ 123(09): 161 - 166 PERFORMANCE OF THREE BREEDS OF BROILER CHICKEN FED WITH DIFFERENT LEVELS OF METABOLIZABLE ENERGY Nguyen Duc Truong1, Tu Trung Kien2*, Nguyen Hung Quang2 1 Laguna State Polytechnic University, Siniloan, Laguna 2College of Agriculture and Forestry - TNU SUMMARY Employing a 3x3 factorial experimental in a Randomized Complete Block Design (RCBD), the study attempted to find answers to the specific questions presented in this study. The factors that were used in this study were the breed of broiler and level of metabolizable energy. The broiler breed has 3 levels, namely: Ross, Cobb and CP 707, while the metabolizable energy also has 3 levels as determined by various rate of discussion at different stages of the growing period. In comparing the production performance of the different breed as affected by three levels of metabolizable energy in the ration, the following parameters were used in this study: survival rate, body weight; feed consumption; feed conversion ratio; performances index; dressing percentage; quality of meat; and gross profit margin of production. The results showed that there was no significant difference in the levels of metabolizable energy in the breeds of chickens used in the study. However, significant level of metabolizable energy effects were observed on final bodyweight, feed consumption, feed conversion ratio, performances index, breast meat yield, abdominal fat yield, crude fat content of breast muscle and inorganic matter content of breast muscle. No significant levels of metabolizable energy effects were detected in the other variables in this study. Likewise, significant broiler breed effects were observed on the total feed consumption and on the gross profit margin of production. The birds fed with metabolizable energy level 3 gave the highest final bodyweight but with the highest feed consumption which is the same as that of the birds fed with metabolizable

• Sinh học
• Performance of three breeds
• Broiler chicken fed with different levels
• Levels of metabolizable energy
• Metabolizable energy effects
• The other variables
• Nabla calculus
• Vector potentials
• Green’s identities
• Curvilinear coordinates
• m Electromagnetism
• Miscellaneous