Effect of Dry Brewery Residue on the Growth of Local Chicken (Gallus domesticus)

Abstract

Residue from the food industry such as dry brewery residue (DBR) has the potential to replace traditional ingredients used in chicken feed, the costs of which have been increasing greatly year by year. The current study is aimed at evaluating the effect of different levels of DBR in chicken feed on chicken growth. The basic diet was supplemented with 0 % (used as a control), 20 %, 25 %, or 30 % DBR content. The broiler chickens were raised in a Completely Randomized Design (CRD) with three replicates, and each replicate contained ten six-week-old broilers. Experimental results showed that there was no significant difference in the mean weight of chickens among the four treatments from week 1 to week 5. However, in weeks 6 and 7, the second treatment which applied 25 % DBR, resulted in greater weight gain than the control (0 % DBR), the first treatment (20 % DBR), and the third treatment (30 % DBR) at P<0.05. Additionally, the intake of feed by chickens in the second treatment was significantly higher than for other treatments (P <0.05) during weeks 6 and 7. Taken together, these results suggest that basic feed supplemented with 25 % DBR can promote chicken growth better than other levels of DBR, and this increased growth is likely promoted by more feed intake.