At what Age Can Broiler Chickens Achieve the Best Performance Using Soluble and Insoluble Fiber?

The type of fiber utilized in broiler diets at different ages has not been extensively studied, and the data supporting this theory are rare. A total of ۱۶۰ hatched Ross ۳۰۸ male broiler chicks were randomly distributed among four dietary groups, each with four replicates and ten chicks per replicate. The treatment groups were as follows: basal diet without any additives until the finisher period (Control); diet containing ۳% rice hull (RH) in the grower period and ۳% sugar beet pulp (SBP) in the finisher period (RG-SF); diet containing ۳% SBP in the grower period and ۳% RH in the finisher period (SG-RF); and diet containing ۱.۵% RH and ۱.۵% SBP in the grower and finisher periods (RS-GF). The findings indicated a significant improvement in the feed conversion ratio of broilers in the RG-SF group from days ۱۱ to ۲۴, as well as in body weight gain in the RG-SF and RS-GF groups from days ۱۱ to ۴۲ (P < ۰.۰۵). The proventriculus and gizzard percentage in the SG-RF group increased at ۲۴ and ۴۲ days of age, respectively (P < ۰.۰۵). At ۴۲ days of age, the greatest percentage of thigh and intestinal weights was observed in the RG-SF group (P < ۰.۰۵). The small intestinal relative length decreased at ۲۴ and ۴۲ days of age in the RS-GF group compared to the control group (P < ۰.۰۵). In conclusion, our results showed that the ۳% RH and ۳% SBP in broiler diets at grower and finisher periods, respectively (RG-SF group), and supplementation with ۱.۵% RH and ۱.۵% SBP in both grower and finisher periods (RS-GF group) could improve broiler performance.

کلیدواژه ها:

Broiler ، Fiber ، Performance ، Different ages