The Effects Of Restriction Of Protein, Energy And Intake On Arber Acres Broiler Performance And Economic Benefit

At present study, two experiments were conducted to examine application and economic benefit of compensatory growth in practice by restriction of intake, energy or protein in 7~14 days when the Arber Acres broilers were slaughtered at 35 or 45-day.In experiment 1, 960 1-day AA broilers were used to investigate application and economic benefit of compensatory growth in practice by restriction of energy, protein and intake, in 7-~14-day when the broiler were slaughtered at 35-day. The results showed that, 1) From 7- to 14-day, body gain is significantly (P<0.05) highest in control, and gain feed ratio is lowest (P<0.05) in restriction intake treat, but there are no significant (P<0.05) difference among treats for mortality rate. 2) From 14- to 35-day, there are no significant (P<0.05) difference between all treats for intake, but the growth performances of restriction intake are significantly (P<0.05) higher than other restriction treat or control. 3) From 1- to 35-day, the similar results are observed. The greatest or worst performances appear in restriction intake and restriction, individually.4) Of course, the highest benefit occurs in restriction of intake.In experiment 1, 1200 1-day AA broilers were used to investigate application and economic benefit of compensatory growth in practice by restriction of intake, energy or protein in 7-~14-day when the broiler were slaughtered at 45-day. The results of present experiment are similar to that of experiment 1. The different compensatory growth is discovered in all treats after restriction, and complete compensatory growth, optimal performances and economic benefit are also revealed, and the worst performance and economic benefit take place with treatment of restricting protein.According to above mentioned results, it is concluded that the complete compensatory growth is investigated after early restriction intake, and early restriction intake causes higher growth or productive performances and economic benefits compared with control. Therefore, the early restriction (7-~14-day) may be adopted in practical.