Impact of Dietary Supplementation of Probiotic or Enzymes on Carcass Traits and Intestinal Microflora of Broiler

Abstract

The present study aimed to determine the effect of supplementing diets of broiler with probiotic or enzymes on carcass traits and intestinal microflora. One hundred thirty five, one-day-old-Ross-308 chicks were randomly distributed into three experimental groups and every group was divided into three replicates of 15 chicks each. The first group received only basal diets (starter for 2 weeks and grower for 3 weeks) as control (C), the 2 nd group (T1) received the basal diets supplemented with probiotic (Guardizen-M) at the level of 1g/kg diet, while the 3 rd group (T2) received the basal diets supplemented with enzymes (Fra ® Multizyme) at the level of 0.5g/kg diet. The trial lasted for 35 days of age. The results indicated that percentages of carcass, breast, thigh, drumsticks were significantly (P≤ 0.05) higher for groups T1 and T2 compared with the control one. Using probiotics or enzymes resulted in a considerable (P≤0.05) lower amount of abdominal fat. The differences in percentages of drip loss, cooking loss, water holding capacity and giblets were not significant among all groups. Intestinal Lactobacillus bacteria was significantly (P≤0.05) increased and coliform bacteria was remarkably (P≤0.05) decreased in T1 and T2 groups compared with the control one. According to our findings, it might be concluded that supplementing broiler diets with 1g probiotic (Guardizen-M) or 0.5g enzymes (Fra ® Multizyme)/kg diets have positive effects on carcass traits and intestine morphology.

Xylanase supplementation in energy-deficient corn-based diets: impact on broiler growth, nutrient digestibility, chyme viscosity and carcass proximates

“…The present study did not show any improvements in the breast and leg meat on moisture, CP, fat, and ash composition upon xylanase supplementation individually or in combination with other enzymes as has been previously reported [ 37 ]. It is plausible that improvements in carcass nutrient composition and parameters of meat proximate composition could be achieved if other feed additives are combined with xylanase in the broiler diets [ 38 ]. To date, there is limited literature on the effects of xylanase on the meat proximate composition and muscle quality of broilers based solely on xylanase.…”