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EFFECT OF DIFFERENT DIETARY PROTEIN AND ENERGY LEVELS ON THE PERFORMANCES OF STARCROSS PULLETS

  • Uddin, M. Salah ;
  • Tareque, A.M.M. ;
  • Howlider, M.A.R. ;
  • Khan, M. Jasimuddin
  • Received : 1991.04.03
  • Accepted : 1991.08.07
  • Published : 1991.12.01

Abstract

In two experiments 640 starcross replacement pullets between 25 and 154 days of age were fed ad libitum on either of 16 diets formed by the combination of $4CP{\times}4ME$ levels to study the interaction of CP and ME on growth performances. In both experiments, feed intake decreased, but protein intake, energy intake, live weight gain and feed conversion efficiency increased and sexual maturity hastened with the increase of dietary protein and/or energy level. The protein conversion efficiency decreased with the increase of dietary protein level. The energy conversion efficiency, however, did not show any relationship with dietary energy level. There was a greater improvement of growth performance due to simultaneous increase of dietary protein and energy level than that of increasing protein or energy alone.

Keywords

Protein;Energy;Performance;Starcross;Pullets