Effects of Metabilizable energy to protein ratios in diet at 1 to 21 days of age on production performance and carcass characteristics of F1 Mia × Luong Phuong chicken
An experiment was conducted to determine the optimal ME and CP ratios for F1 (Mia × Luong Phuong) chicken based on growth performance from 1 to 21 days of age and second, further investigate the influence of body weigh at day 21 on growth performance and carcass traits of F1 (Mia × Luong Phuong) chicken from 22 to 84 days of age. Two hundred dayold F1 Mia × Luong Phuong chicks were randomly allotted to treatments following a Randomized Complete Block Design. There were 4 replicates per treatment with 10 birds in each cage. The treatments used were four ratios of metabilizable energy (ME) to crude protein (CP) in diet of 150, 142.5, 135.7, 129.5 and 123.9. Result showed that there were significant differences in body weight (BW), body weight gain (BWG), average daily gain (ADG), Feed conversion ratio (FCR) among chicken groups fed diets containing different ME to CP ratios. There were no significant differences observed for average daily feed intake (ADFI) and acceptability across treatment. Crude protein efficiency of chicks fed diets containing ME to CP ratios of 142.5 or 135.7 were better (P<0.05) as compared to those fed diets containing 150, 129.5 and 123.9 of ME to CP ratios. While ratio of ME to CP in booster diets did not effect on the growth performance of grower, finisher phases and carcass yield.
